CHEMISTRY By J.V HUBLIKAR
|
|
|
- Brent Doyle
- 6 years ago
- Views:
Transcription
1 CHEMISTRY By J.V HUBLIKAR
2 Topics : Nomenclature of Organic Compounds Hydrocarbons Aromatic Hydrocarbons Polymers Organic compound containing Oxygen-I
3 1. Which of the following could act as propallent for rocket? 1. Liquid N 2 + Liquid O 2 2. Liquid H 2 + Liquid N 2 3. Liquid O 2 + Liquid Argon 4. Liquid H 2 + Liquid O 2
4 Ans : 4. Liquid H 2 + Liquid O 2 Reason : Liquid hydrogen has low molecular mass and high heat of combution while oxygen is supporter of combution. Thus liquid H 2 + liquid O 2 is used as good rocket propallent
5 2. An element essentially found in all explosive is. 1. Nitrogen 2. Sulphur 3. Carbon 4. Phosphorus Ans : 1. Nitrogen because all explosive contain Nitrogen
6 3. Drug which is used to reduce anxiety and brings calmness is known as 1. Tranquilizer 2. Analgesic 3. Antacid 4. Antibiotic Ans : 1. Tranquilizer
7 4. Household gaseous fuel (LPG) mainly contains. 1. CH 4 2. C 2 H 6 3. C 2 H 4 4. C 4 H 10 Ans : 4. C 4 H 10 LPG contains butane & isobutane
8 5. In Lassaign s test, the organic compound is fused with a piece of sodium metal in order to 1. Increase the ionisation of the compound 2. Increase the reactivity of the compound 3. Converts the covalent compound into a mixture of ionic compound 4. Decrease the melting point of the compound
9 Ans : 3. convert the covalent compound into a mixture of ionic compound Note : ionic compounds like NaCN, Na 2 S, NaX are formed which easily give the test for N, S and Halogens.
10 6. The blue colour developed when sodium fusion extract is heated with fresh FeSO 4 in presence of alkali cooled and acidified with dil.h 2 SO 4 indicates. Continued
11 Continued 1. N, Fe 4 [Fe(CN) 6 ] 4 2. N, Na 4 [Fe(CN) 6 ] 3. S, Na 4 [Fe(CN) 5 NOS] 4. N+S, Fe(CNS) 3 Ans : 1.N, Fe 4 [Fe(CN) 6 ] 4
12 7. During the test for Halogen by Silver Nitrate test, the sodium extract is first boiled with few drops of HNO 3 to 1. decompose sodium halides present. 2. helps in the precipitation of AgCl. 3. increase the concentration of Nitrate ion. 4. Decompose Na 2 S and NaCN if formed. Ans : 4. Decompose Na 2 S and NaCN if formed.
13 8. In Kjeldahl s method, copper sulphate acts as 1. an Oxidising agent 2. a reducing agent 3. a catalytic agent 4. a hydrolysing agent Ans :3. a catalytic agent
14 9. In Liebig s method, for the estimation of carbon, the CO 2 produced is absorbed in the solution of 1. Ca(OH) 2 2. pyrogallol 3. KOH 4. Any one of these Ans :3. KOH
15 10. Empirical formula of a compound is CH 2 O and its molecular mass is 90. The molecular formula of the compound is 1. C 3 H 6 O 3 2. C 2 H 4 O 2 3. C 6 H 12 O 6 4. CH 2 O Ans :1. C 3 H 6 O 3
16 Note : Empirical formula mass =CH 2 O = =30 n=molecular mass/emp. formula mass = 90/30 = 3 mol.formula = emp.formula x n = CH 2 O x 3 = C 3 H 6 O 3
17 11. An Organic Compound contain C,H&N give following on analysis, C=40%, H=13.33% & N=46.67% what would be its empirical formula 1. C 2 H 7 N 2. C 2 H 7 N 2 3. CH 3 N 4. CH 4 N Ans :4. CH 4 N
18 Note : C H N 40/ / /14 =3.33 =13.33 = 3.33 =3.33/3.33 =13.33/3.33 =3.33/ CH 4 N
19 12. IUPAC Name of CH 3 -CH 2 -CH-CH-CH 2 -CH 3 CH 3 C 2 H 5 is 1. 4-ethyl-3-methyl hexane 2. 3-ethyl-4-methyl hexane 3. Both of these 4. None of these
20 Ans : 2. 3-ethyl-4-methyl hexane Note : If two different substituents are present at equivalent position from the two ends in the parent chain, then the numbering of parent chain is done, in such a way that substituent which comes first in the alphabetical order gets the lowest number.
21 13. IUPAC Name of CH 3 -CH 2 -C(Br)=CHCl is 1. 4-chloro-3-bromo but-3-ene 2. 2-bromo-1-chloro but-1-ene 3. 2-bromo-1-chloro butene bromo-2-ethyl-3-chloro propene Ans : 2. 2-bromo-1-chloro but-1-ene
22 14. IUPAC Name of CH 3 -CH(CH 3 )=CH-COOH is 1. 2-methyl but-2-enoic acid 2. 3-methyl but-3-enoic acid 3. 3-methyl but-2-enoic acid 4. 2-methyl but-3-enoic acid Ans : 3. 3-methyl but-2-enoic acid
23 15. The number of Pi Bonds in CH 2 =CH-CH=C CH is Ans : 3. 4
24 Note : Chemistry (i)carbon-carbon double bond contains One Sigma bond and One Pi bond (ii)carbon-carbon Triple bond contains one sigma bond & two Pi bonds. (iii) Two double bond = 2 Pi-bonds One Triple bond = 2 Pi-bonds Total Pi-bonds = 4
25 16. Two members of the homologous series have 1. different general formula 2. different molecular weight 3. different methods of preparation 4. different chemical properties Ans : 2. different molecular weight
26 Note : Each member of the homologous series differ from preceding member and succeeding member by CH 2 group and hence they differ in their molecular weight by 14.
27 17. For the preparation of alkane, a concentrated aqueous solution of sodium or potassium salt of carboxylic acid is subjected to 1.Hydrolysis 3.Hydrogenation 2. Oxidation 4. Electrolysis Ans : 4.Electrolysis 2RCOONa +2H 2 O R-R+2CO 2 +2NaOH+H 2
28 18. CH 3 -CH(Br)-CH 3 CH 3 -CH=CH 2 this transformation is carried out in the presence of 1.aqu.KOH 2. H 2 O Note : 3.alc.KOH 4. H 2 SO 4 Ans : 3.alc.KOH Hydrogen & Bromine are eliminated, It is a dehydrohalogenation reaction.
29 19. Photochemical chlorination of alkane is initiated by the process of Note : 1.Pyrolysis 3.Homolysis 2. Substitution 4. Hetrolysis Ans : 3. Homolysis Cl Cl Cl + Cl Chlorine free radical is formed by the homolysis of chlorine molecule.
30 20. During the preparation of ethane by Kolbe s electrolytic method using inert electrodes the ph of the electrolyte 1.increases progressively as the reaction proceeds 2.decreases progressively as the reaction proceeds 3.remains constant throughout the reaction 4.may decrease if the concentration of electrolyte is not very high.
31 Ans : 1.increases progressively as the reaction proceeds Note : 2CH 3 COONa+2H 2 O C 2 H 6 +2CO 2 +2NaOH+H 2 as the reaction proceeds formation of NaOH increases hence ph increases
32 21. When Calcium salt of adipic acid is distilled and the product is reduced with Zn-Hg/HCl is obtained. 1.Cyclopentanone 3.Cyclohexane 2. Cyclopentane 4. Cyclohexanone Ans : 2. Cyclopentane Calcium Adipate Cyclopentanone Cyclopentane
33 22. A hydrocarbon C 4 H 8, neither decolourises bromine in CCl 4 sol n, nor reacted with HBr when heated to C with hydrogen in the presence of Ni-catalyst, a new hydrocarbon C 4 H 10 was formed. What is the Name of original compound? 1.n-butane 3.Isobutylene 2. cis-2-butene 4. Cyclobutane
34 Ans : 4. Cyclobutane Note : Hydrocarbon C 4 H 8 i) doesn t decolourise Br 2 in CCl 4 ii) doesn t react with HBr, means it is not an unsaturated open chain compound. iii) It reacts with H 2 in presence of Nicatalyst at c to form C 4 H 10 means it is a cyclic compound adds on H 2 and undergo ring opening reaction to form open chain compound n-butane.
35 23. According to MarKownikoff s rule when hydrogenchloride adds on to unsymmetrical alkene the hydrogen of HCl attaches to 1. Carbon in the middle of the molecule. 2. Carbon at the end of the molecule 3. Carbon with most number of hydrogen 4. Carbon with least number of hydrogen
36 Note : Markownikoff s rule Chemistry Ans : 3. Carbon with most number of hydrogen Positive part of the reagent adds on to carbon containing more number of hydrogen atom
37 24.A gas decolourises Alkaline KMnO 4 (Baeyer`s Regent) but does not give any precipitate with Ammonical AgNO 3 the gas is 1. Methane 2. Ethane 3. Ethene 4. Ethyne Ans : 3. Ethene
38 Note : 1.Unsaturation in organic compound is tested by using following reagent Alkaline KMnO 4 ( Colour of KMnO 4 is decolourised ) Bromine water ( Colour of Bromine water is decolourised) Ozone ( formation of Ozonide) (Continued )
39 Note : (Continued ) 2. Ammonical AgNO 3 (Tollen s reagent ) and Ammonical Cu 2 Cl 2 are used to test acidic hydrogen atom in alkynes 3. Acidic Hydrogen atom is present at the end of the triple bonded carbon atom. It is due to the higher electro negativity of the SP Hybridized Carbon Atom
40 25. Methane is formed from the Hydrolysis of 1. Calcium Carbide 2. Methanal 3. Aluminium Carbide 4. Ethanol Ans : 3. Aluminium Carbide
41 Note : 1.CaC 2 + 2H 2 O Ca(OH) 2 + C 2 H 2 2.Al 4 C H 2 O 4Al(OH) 3 + 3CH 4 3.H-CHO + H 2 O No reaction 4.C 2 H 5 OH + H 2 O No reaction
42 26.A Metallic Carbide on treatment with water gives a colourless gas which burns readily in air and gives a red precipitate with Cu 2 Cl 2 +NH 4 OH the gas is 1. Methane 2. Ethane 3. Ethene 4. Ethyne Ans : 4. Ethyne (Acetylene)
43 27.Addition of HI on double bond of Propene yields Isopropyle Iodide and not n Propyl Iodide as the major product, because addition proceeds through 1. A more stable carbonium ion 2. A more stable carbanion 3. A more stable Free Radical 4. Nucleophile
44 Ans: 1. A more stable carbonium ion Note : CH 3 CH=CH 2 +H + 1) CH 3 CH + CH 3 Iso propyl carbonium ion(more stable) 2) CH 3 CH 2 CH 2 + n-propyl carbonium ion(less stable)
45 28. Two jars A and B are filled with Hydrocarbons, Br 2 in CCl 4 is added to these jars A does not decolourise the Br 2 solution but B decolourises what are A and B 1. Alkane and Alkene 2. Alkene and Alkane 3. Alkene and Alkyne 4. Alkene & Benzene Ans : 1. Alkane and Alkene
46 29. Benzene reacts with Chlorine to form benzene Hexachloride in the presence of 1. Nickel 2. Alcl 3 3. Bright Sunlight 4. Zn Note : Ans : 3. Bright Sunlight C 6 H 6 + 3Cl 2 Bright sunlight C 6 H 6 Cl 6 (BHC Insecticide)
47 30. Which of the following is the main component of heavy oil fraction of coal tar 1. Cresol and Naphthol 2. Phenol 3. Toluene 4. - Naphthylamine Ans : 1. Cresol and Naphthol
48 Note : 1. Light oil fraction C 2. Middle oil fraction C C 3. Heavy oil fraction C C 4. Green oil fraction C C Benzene, Toluene, Xylene Phenol, Naphthalene Cresols, Naphthols Anthracene, Phenanthrene
49 31. Benzene is less reactive than Ethene and Ethyne towards addition reaction. This is due to 1. Cyclic Nature 2. Delocalisation of Electrons 3. SP 2 Hybridization 4. Presence of 3 Double Bonds Ans : 2. Delocalisation of Electrons Stability of Benzene is due to delocalisation of - Electrons (resonance)
50 32. Carbon in Benzene undergoes SP 2 Hybridization and the bond angle is 120 o. The shape of Benzene Molecule is 1. Linear 2. Planar Hexagonal 3. Pyramidal 4. Tetrahedral Ans : 2. Planar Hexagonal
51 33. Which of the following can be easily Sulphonated? 1. Benzene 2. Toluene 3. Nitrobenzene 4. Chlorobenzene Ans : 2. Toluene Note: The electron releasing CH 3 group in Toluene increases the electron density on benzene ring and hence facilitates the attack of Electrophile
52 34. Toluene can be separated from Benzene by 1. Washing with Con H 2 SO 4 2. Cooling in freezing mixture 3. Dissolving in Sodium Hydroxide 4. Steam distillation Ans : 2. Cooling in freezing mixture
53 35.Which of the products can not be obtained when Chlorine is passed into boiling Toluene 1. Benzyl Chlorine 2. Benzotrichloride 3. Benzal Chloride 4. O Chlorotolune Ans : 4. O Chlorotolune
54 Note: Toluene Sunlight,110 0 C Cl 2 BenzylChloride Cl 2 Benzal chloride Cl 2 Benzotrichloride
55 36. Rectified spirit gives absolute alcohol by 1. Fractional distillation 2. Azotropic distillation 3. Vaccum distillation 4. Steam distillation Ans : 2. Azotropic distillation i.e, by heating with quick lime (CaO)
56 37. The enzymes which can catalyse the conversion of glucose to ethanol is 1. Zymase 2. Invertase 3. Maltase 4. Diastase Ans : 1. Zymase Note : Maltase converts Maltose to Glucose Invertase - converts Sucrose to Glucose & Fructose Diastase converts Starch to Maltose
57 38. Most favourable condition for the alcoholic fermentation of sugar are 1. High conc n of sol n, Low temperature, plenty of air supply 2. Low conc n of sol n, moderate temperature, absence of air 3. Low conc n of sol n, Low temperature, plenty of air supply 4. None of the above Ans :2. Low conc n of Sol n, moderate temperature, absence of air
58 39. Which of the following compounds provides food to catalysts during alcoholic fermentation 1. Ammonium Chloride 2. Invertase 3. Ammonium Sulphate 4. Wine Ans : 3. Ammonium Sulphate
59 40. Power alcohol is a mixture of petrol and alcohol in the ratio of 1. 4 : : : : 2 Ans : 1. 4 : 1 Note : 80% petrol and 20% alcohol mixture is called power alcohol. - Fuel for internal combustion engines
60 41. Ethyl alcohol exhibits acidic character on reacting with 1. Acetic acid 2. Sodium metal 3. Hydrogen chloride 4. Acidified K 2 Cr 2 O 7 Ans : 4. Acidified K 2 Cr 2 O 7 Note : acidified K 2 Cr 2 O 7 C 2 H 5 OH + 2[O] CH 3 COOH + H 2 O
61 42. In ethanol, the bond that undergoes hetrolysis during its esterification with CH 3 COOH/H 2 SO 4 is 1. C C 2. C O 3. O H 4.C H Ans : 3. O H Note : Conc. H 2 SO 4 C 2 H 5 O H+HO COCH 3 C 2 H 5 OCOCH 3 + H 2 O
62 43. Wide spread deaths due to liquor poisoning is because of 1. Presence of bad compound in higher 2. Presence of methanol 3. Presence of Ethanol 4. Fermentation Ans : 2. Presence of methanol Note : Denatured alcohol-unfit for drinking purpose. Rectified spirit + 5% methanol +0.5% pyridine + colouring matter
63 44. Which of the following will react fastest with Lucas reagent 1. Ethanol 2. Isopropyl alcohol 3. 2-methyl propan-2-ol 4. All reacts at Equal speed Continued..
64 Ans : 3. 2-methyl propan-2-ol Note : Alcohol + HCl + anhydrous ZnCl 2 Alkylhalide alcohols react immediately to give turbidity alcohols react after some time to give turbidity alcohols reacts on heating to give turbidity Order of reactivity of alcohol 3 0 >2 0 >1 0
65 45. Lucas test can be used to distinguish between 1. Methanol and Ethanol 2. Propan-1-ol & ethanol 3. Butan-1-ol and 2-methylpropan-2-ol 4. Ethanol and glycol Continued..
66 Ans : 3. Butan-1-ol and 2-methylpropan-2-ol Note : Lucas test is to distinguish between 1 0, 2 0 & 3 0 alcohol Butan-1-ol is a 1 0 alcohol and 2-methyl-propan-2-ol is a 3 0 alcohol
67 46. Ethanol is soluble in water due to 1. Its neutral nature 2. Dissociation in water 3. Hydrogen bonding 4. Ethyl group Ans : 3. Hydrogen bonding
68 47. An organic compound A containing C, H & O has a pleasant odour with boiling point of 90 0 c on boiling A with conc.h 2 SO 4, acolourless gas is produced which decolourises bromine water and alkaline KMNO 4. The organic compound A is 1. C 2 H 5 Cl 2. C 2 H 5 COOCH 3. C 2 H 5 OH 4. C 2 H 6 Continued..
69 Ans : 3. C 2 H 5 OH Note : C 2 H 5 OH[Ethanol] Conc. H 2 SO 4 C 2 H 4 [Ethene] Ethene decolourises colour of Bromine water and alkaline KMNO 4
70 48. The mixture of ether and alcohol is used as a petrol substitute under the name 1. Haloethane 2. Natalite 3. Proof spirit 4. Artificial camphor Ans : 2. Natalite
71 49. In Williamson s Synthesis Ethoxyethane is prepared by 1. Passing ethanol over heated Al 2 O 3 2. Heating sodium ethoxide with Ethylbromide 3. Treating ethylalcohol with excess of H 2 SO 4 at 440K 4. Heating ethanol with dry Ag 2 O Continued..
72 Ans : 2. Heating sodium ethoxide with Ethylbromide Note : Sodium Ethoxide Ethyl bromide C 2 H 5 ONa + Br-C 2 H 5 C 2 H 5 O C 2 H 5 + NaBr Diethyl ether
73 50. When diethyl ether is treated with excess of Cl 2 in the presence of sun light, the product formed is : 1. CH 3 CHCl O CH 2 CH 3 2. CH 3 CHCl O CHClCH 3 3. CCl 3 CCl 2 O CCl 2 CCl 3 4. CH 3 CCl 2 O CHClCH 3 Ans : 3. CCl 3 CCl 2 O CCl 2 CCl 3
74 51. Which is formed when diethyl ether is heated with one mole of HI 1. Ethyl alcohol and ethyl iodide 2. Ethyl iodide only 3. Ethyl alcohol only 4. Ethyl iodide and ethane Ans : 1. Ethyl alcohol and ethyl iodide
75 52. An ether is more volatile than alcohol having the same molecular formula. This is due to 1. Intermolecular hydrogen bonding in ethers 2. Intermolecular hydrogen bonding in alcohols 3. Dipolar character of ethers 4. Alcohols having resonance structures. Ans : 2. Intermolecular hydrogen bonding in alcohols
76
CHAPTER HYDROCARBONS. Chapterwise Previous year Qs. (a) Na (b) HCl in H2O (c) KOH in C2H5OH (d) Zn in alcohol. Ans: (c)
122 CHAPTER HYDROCARBONS 1. Acetylenic hydrogens are acidic because [1989] Sigma electron density of C Hbond in acetylene is nearer to carbon, which has 50% s- character Acetylene has only open hydrogen
Question Bank Organic Chemistry II
Question Bank Organic Chemistry II 1. What are saturated and unsaturated hydrocarbons. Classify the following as saturated and unsaturated hydrocarbons. CH 4, C 2 H 2, C 2 H 6, C 3 H 6, C 3 H 4 Ans. Compounds
1. During electrophilic substitution of benzene, the intermediate species involved is a) Carbanion b) Carbocation c) Free radical d) none of these
1. During electrophilic substitution of benzene, the intermediate species involved is a) Carbanion b) Carbocation c) Free radical d) none of these 2. In the reaction C 6 H 6 + Cl 2 C 6 H 5 Cl + HCl ( chlorobenzene)
MC 17 C SECTION - I (40 marks) Compulsory : Attempt all questions from this section.
Question 1 (a) SECTION - I (40 marks) Compulsory : Attempt all questions from this section Select from the list given below (A to G), only one in each case which matches with the description given below:
ST. JOSEPH S COLLEGE OF ARTS & SCIENCE (AUTONOMOUS) ST. JOSEPH S COLLEGE ROAD, CUDDALORE CH101T ORGANIC CHEMISTRY I (SEMESTER-I)
UNIT I 1. The hybridization involved in the formation of acetylene is a) sp b) sp 2 c) sp 3 d) sp 3 d 2. The IUPAC name of is 1. 3-hexene b) 4-hexene c) 3-hexyne d) 4-hexyne 3. -------- is the type of
MAHESH TUTORIALS I.C.S.E.
MAHESH TUTORIALS I.C.S.E. GRADE - X (2017-2018) Exam No. : MT/ICSE/SEMI PRELIM - I-SET -B 008 Sulphuric acid, Ammonia, Analytical Chemistry, Organic Chemistry HCl, Nitric acid, Metallurgy Chemistry SCIENCE
Organic Chemistry. REACTIONS Grade 12 Physical Science Mrs KL Faling
Organic Chemistry REACTIONS Grade 12 Physical Science Mrs KL Faling SUBSTITUTION REACTIONS This is a reaction where an atom or group of atoms is replaced by another atom or group of atoms Substitution
i) An article X is to be plated with Nickel. Answer the following questions: c) Write the reactions that take place at cathode and anode.
Work sheet Electrolysis i) An article X is to be plated with Nickel. Answer the following questions: a) Name the anode and cathode used. b) Name the electrolyte used. c) Write the reactions that take place
MC 17 C SECTION - I (40 marks) Compulsory : Attempt all questions from this section.
Question 1. (a) SECTION - I (40 marks) Compulsory : Attempt all questions from this section. Choose from the following list of substances, as to what matches the description from to given below : [Bronze,
AS Organic Chemistry Revision. Part 1
AS Organic Chemistry Revision. Part 1 2.2 Nomenclature and isomerism in organic compounds 2.2.1 understand the terms empirical, molecular and structural formulae, homologous series and functional groups;
Class: 12 Subject: chemistry Topic: Organic Chemistry of O compounds No. of Questions: 20 Duration: 60 Min Maximum Marks: 60
Class: 12 Subject: chemistry Topic: Organic Chemistry of O compounds No. of Questions: 20 Duration: 60 Min Maximum Marks: 60 1. Ethylene is passed through conc. H 2 SO 4 and the product obtained is diluted
Organic Chemistry SL IB CHEMISTRY SL
Organic Chemistry SL IB CHEMISTRY SL 10.1 Fundamentals of organic chemistry Understandings: A homologous series is a series of compounds of the same family, with the same general formula, which differ
2. An aldehyde can be obtained by the dehydrogenation of an alcohol. The catalyst used in the reaction is
Class: 12 Subject: Chemistry Topic: Organic Chemistry of O compounds No. of Questions: 20 Duration: 60 Min Maximum Marks: 60 1. Rectified spirit is converted to absolute alcohol taking advantage of the
ICSE Board Class X Chemistry Board Paper 2013 Solution SECTION I
ICSE Board Class X Chemistry Board Paper 2013 Solution SECTION I 1) i. Hydronium ii. Hydroxide iii. Salt iv. Water v. Hydrogen 2) i. C 2 H 6 gas Reaction: ii. Sulphur dioxide gas is evolved. K 2 SO 3 +
Angel International School - Manipay 1 st Term Examination November, 2015
Grade 11B Angel International School - Manipay 1 st Term Examination November, 2015 Chemistry - I Duration: 1.00 Hour Part 1 1) A liquid boils at a temperature of 100 o C. Which other property of the liquid
4. Carbon and Its Compounds
4. Carbon and Its Compounds Covalent bonds The bonds formed by the sharing of electrons are known as covalent bonds. In covalent bonding, both the atoms (that are participating in the bonding) share electrons,
ICSE Board Class X Chemistry Board Paper Time: 1½ hrs Total Marks: 80
ICSE Board Class X Chemistry Board Paper 2011 Time: 1½ hrs Total Marks: 80 General Instructions: 1. Answers to this paper must be written on the paper provided separately. 2. You will NOT be allowed to
CHEMISTRY. SCIENCE Paper 2
CHEMISTRY SCIENCE Paper 2 (Two hours) Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading
Vijayakarnataka CET Chemistry Practice paper - 02
Vijayakarnataka CET Chemistry Practice paper - 02 1. The number of ions formed when cuprammonium sulphate is dissolved in water is (1) one (2) two () four (4) zero 2. The functional group present in oils
Unit - 11 ALCOHOLS, PHENOLS AND ETHERS 1. Write IUPAC names of the following compounds : (ix) C 6 H 5 OC 3 H 7 (x) O Cl 2. Write the structures of the compounds whose names are given below : (i) 3, 5-dimethoxyhexane-1,
Carbon and its Compounds
CHAPTER4 Carbon and its Compounds Multiple Choice Questions 1. Carbon exists in the atmosphere in the form of carbon monoxide only carbon monoxide in traces and carbon dioxide carbon dioxide only coal
I & II PHENOLS ETHERS
HYDROCARBONS I & II PHENOLS ALCOHOLS & ETHERS 1. During electrophilic substitution of benzene, the intermediate species involved is a) Carbanion b) Carbocation c) Free radical d) none of these Carbocation,
I. Multiple Choice Questions (Type-I)
Unit 13 HYDROCARBONS I. Multiple Choice Questions (Type-I) 1. Arrange the following in decreasing order of their boiling points. (A) n butane (B) 2 methylbutane (C) n-pentane (D) 2,2 dimethylpropane A
Page (Extra space) (4) Benzene can be converted into amine U by the two-step synthesis shown below.
Q1. The hydrocarbons benzene and cyclohexene are both unsaturated compounds. Benzene normally undergoes substitution reactions, but cyclohexene normally undergoes addition reactions. (a) The molecule cyclohexatriene
Assignment - 3. Organic Chemistry
Assignment - 3 Organic hemistry 85 ORGANI EMISTRY Assignment Sheet 1. (a) For each of the compounds : (i) Ethane (ii) Vinegar, (iii) Marsh gas, draw the relevant structural formula. (b) (i) What words
These are aliphatic hydrocarbons in which carbons atoms are joined by single covalent bonds. These are saturated organic compounds.
These are aliphatic hydrocarbons in which carbons atoms are joined by single covalent bonds. These are saturated organic compounds. C n H 2n+2 The part of an Alkane obtained after the removing the one
1. CONCEPTS IN ORGANIC CHEMISTRY 2. SYNTHETIC ORGANIC CHEMISTRY 3. ISOMERISM II 4. HYDROCARBONS II 5. HALOALKANES. Vikasana - CET 2012
CET OBJECTIVE QUESTION ON 1. CONCEPTS IN ORGANIC CHEMISTRY 2. SYNTHETIC ORGANIC CHEMISTRY 3. ISOMERISM II 4. HYDROCARBONS II 5. HALOALKANES 1.The inductive effect a. Implies the atoms ability to cause
CHEMISTRY CARBON AND ITS COMPOUNDS
CHEMISTRY CARBON AND ITS COMPOUNDS Carbon is a versatile element. In earth s crust, carbon is 0.02% and found in form of minerals. Atmosphere has 0.03% of Carbon dioxide. All living structures are carbon
Chemistry 2.5 AS WORKBOOK. Working to Excellence Working to Excellence
Chemistry 2.5 AS 91165 Demonstrate understanding of the properties of selected organic compounds WORKBOOK Working to Excellence Working to Excellence CONTENTS 1. Writing Excellence answers to Cis-Trans
3 free radical is most stable. Q.5. A + Cl 2 hv monochloro product To maximize the yield of monochloro product in the above reaction? Cl 2 must be add
Q.1. I II III IV IV III II I I III II IV IV II III I I II III IV The decreasing order of the anti knocking value of octane number of the following is: (I) CH 4 (II) C 2 H 6 (III) C 3 H 8 (IV) C 4 H 10
Q. No. 4 Chlorination of toluene in the presence of light and heat followed by treatment with aqueous NaOH gives o cresol p cresol 2, 4 dihydroxy tolu
Q. No. 1 Glycerine has One primary and two secondary OH groups One secondary and two primary OH groups Three primary OH groups Three secondary OH groups Q. No. 2 The structural formula of cyclohexanol
CHEMISTRY. SCIENCE Paper 2
CHEMISTRY SCIENCE Paper 2 (Two hours) Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading
TOPIC 13 ANSWERS & MARK SCHEMES QUESTIONSHEET 1 ALKANES
QUESTIONSHEET 1 ALKANES a) (i) UV light / temperatures > 500 ºC (ii) CH 4 (g) + Cl 2 (g) Cl(g) + HCl(g) Cl(g) + Cl 2 (g) Cl 2 (l) + HCl(g) Cl 2 (l) + Cl 2 (g) CHCl 3 (l) + HCl(g) CHCl 3 (l) + Cl 2 (g)
(A) Simple distillation (i) When liquid sample has (i) Mixture of chloroform
PURIFICATION METHODS Distillation Techniques : Ty p e C ondi ti ons E x a m p l e s (A) Simple distillation (i) When liquid sample has (i) Mixture of chloroform non volatile impurities (BP = 334K) and
CYCLOALKANES, POLYMERS, ALCOHOLS AND ETHERS Home Assignment
CYCLOALKANES, POLYMERS, ALCOHOLS AND ETHERS Home Assignment 1. The tendency of cylopropane (I), Cyclobutane (II), cyclopentane (III) to form addition compounds is in the order : a) I > II > III b) I =
# Ans Workings / Remarks
# Ans Workings / Remarks 1 B Atomic mass and temperature affects the rate of diffusion of gas. The lower the atomic mass, the lighter the substance. The higher the temperature, the higher the rate of collision
15.1: Hydrocarbon Reactions
15.1: Hydrocarbon Reactions Halogenation An alkane will react with a halogen to produce a halalkane and the corresponding hydrogen halide. The catalyst is ultraviolet radiation. Reaction 1 methane chlorine
CHEMISTRY CHAPTER- HYDROCARBONS (I PUC) One mark questions
CEMISTRY CAPTER- YDROCARBONS (I PUC) One mark questions 1. What type of structural isomerism is shown by alkanes? 2. Which metal is used in Wurtz reaction? 3. What happens when isopropyl bromide is subjected
Practice Packet Unit 11: Organic Chemistry
Regents Chemistry: Mr. Palermo Practice Packet Unit 11: Organic Chemistry www.mrpalermo.com 1 LESSON 1: Introduction to Organic Chemistry 1. How many times does carbon bond and why? 2. A student investigated
Organic Chemistry. Organic chemistry is the chemistry of compounds containing carbon.
Organic Chemistry Organic Chemistry Organic chemistry is the chemistry of compounds containing carbon. In this chapter we will discuss the structural features of organic molecules, nomenclature, and a
Organic Chemistry. Alkanes are hydrocarbons in which the carbon atoms are joined by single covalent bonds.
Organic Chemistry Organic compounds: The branch of chemistry which deals with the study of carbon compounds is called organic chemistry. Catenation: The carbon atom has a property to undergo self linking
Topic 2 Organic Chemistry
Form 5 Chemistry Notes Ms. R. Buttigieg Pg. 20 Topic 2 Organic Chemistry Organic Chemistry is the chemistry of compounds, which are found in living things or are derived from living things. The basis of
Some Families of Organic Compounds HL
Name: Organic Chemistry 22. Types of Reactions in Organic Chemistry Objectives Addition Reactions -explain what is meant by an addition reaction -write balanced equations using structural formula for the
UNIT 11 ALCOHOLS, PHENOLS & ETHERS
UNIT 11 ALCOHOLS, PHENOLS & ETHERS Alcohols and Phenol are Organic compound with a hydroxyl group (- OH) as functional group. Ethers are identified by a functional group ( 0 ). Cyclic alcohols are named
Downloaded from
1. mark questions CHEMISTRY CARBON AND ITS COMPOUNDS 1. Name of the organic compound, which can be produced by fermentation of sugar and is a constituent of beer. 2. Name the main products formed when
ICSE Board. Class X Chemistry. Board Paper Time: 1½ hrs Total Marks: 80
ICSE Board Class X Chemistry Board Paper 2013 Time: 1½ hrs Total Marks: 80 General Instructions: 1. Answers to this paper must be written on the paper provided separately. 2. You will NOT be allowed to
DAV CENTENARY PUBLIC SCHOOL, PASCHIM ENCLAVE, NEW DELHI - 87
HYDROCARBONS 1. Why do alkenes prefer to undergo electrophilic addition reaction while arenes prefer electrophilic substitution reactions? Explain. 2. Alkynes on reduction with sodium in liquid ammonia
Arrange the following alkene in increasing order of their enthalpy of hydrogenation ( )
Q.1. Which of the statements is correct? (I) Melting point of alkane increases with increase of C atoms and with increase in branching. (II) Boiling point of alkane increases with increase of C atoms but
Chapter 10- Halo Alkanes and Halo arenes LEVEL-1 QUESTIONS
Chapter 10- Halo Alkanes and Halo arenes LEVEL-1 QUESTIONS 1. Out of PCl5 and SOCl2 which one is better reagent for conversion of alcohol to alkylchloride. Why? Answer: SOCl2.Because all the biproducts
MAHESH TUTORIALS I.C.S.E.
MAHESH TUTORIALS I.C.S.E. GRADE - X (2017-2018) Exam No. : MT/ICSE/SEMI PRELIM - I-SET -A 008 Sulphuric acid, Ammonia, Analytical Chemistry, Organic Chemistry HCl, Nitric acid, Metallurgy Chemistry SCIENCE
3.2.9 Alkenes. Addition Reactions. 271 minutes. 268 marks. Page 1 of 35
..9 Alkenes Addition Reactions 71 minutes 68 marks Page 1 of 5 Q1. Propene reacts with bromine by a mechanism known as electrophilic addition. (a) Explain what is meant by the term electrophile and by
Class XI Chapter 13 Hydrocarbons Chemistry
Question 13.1: How do you account for the formation of ethane during chlorination of methane? Chlorination of methane proceeds via a free radical chain mechanism. The whole reaction takes place in the
Organic Chemistry Review: Topic 10 & Topic 20
Organic Structure Alkanes C C σ bond Mechanism Substitution (Incoming atom or group will displace an existing atom or group in a molecule) Examples Occurs with exposure to ultraviolet light or sunlight,
MR. D HR UV AS HE R I.C.S.E. BOA RD PAP ER
MR D HR UV AS HE R ICSE BOA RD PAP ER 200 6 1 ICSE-2006 Section 1 (40 Marks) (Attempt all questions from this section) Question 1 (a) Select from the list given below (A to F), the o0ne substance in each
MC 17 C - 5. SECTION - I (40 marks) Compulsory : Attempt all questions from this section.
Question 1. (a) SECTION - I (40 marks) Compulsory : Attempt all questions from this section. Choose from the following list of substances, as to what matches the description from to (v) given below [propene,
3.2.8 Haloalkanes. Nucleophilic Substitution. 267 minutes. 264 marks. Page 1 of 36
3.2.8 Haloalkanes Nucleophilic Substitution 267 minutes 264 marks Page 1 of 36 Q1. (a) The equation below shows the reaction of 2-bromopropane with an excess of ammonia. CH 3 CHBrCH 3 + 2NH 3 CH 3 CH(NH
MODEL QUESTION PAPER FOR SUMMATIVE ASSESSMENT CHEMISTRY PART-A
MODEL QUESTION PAPER FOR SUMMATIVE ASSESSMENT CHEMISTRY Time: 3 Hours Max Marks: 70 INSTRUCTIONS: i) The question paper has five parts A.B.C.D and E. All the parts are compulsory. Write balanced chemical
Organic Chemistry. Why are these compounds called Organic. What is a Hydrocarbon? Questions: P167 Read
Organic Chemistry The fact that carbon can form a wide variety of relatively stable long chain molecules results in this very important branch of Chemistry: Organics. Carbon forms strong covalent bonds
Chapter 1 Reactions of Organic Compounds. Reactions Involving Hydrocarbons
Chapter 1 Reactions of Organic Compounds Reactions Involving Hydrocarbons Reactions of Alkanes Single bonds (C-C) are strong and very hard to break, therefore these compounds are relatively unreactive
Chapter 25: The Chemistry of Life: Organic and Biological Chemistry
Chemistry: The Central Science Chapter 25: The Chemistry of Life: Organic and Biological Chemistry The study of carbon compounds constitutes a separate branch of chemistry known as organic chemistry The
Organic Chemistry. Chapter 10
Organic Chemistry Chapter 10 10.1 Homologous Series Overview We Are Here Organic Chemistry Organic chemistry is the chemistry of carbon containing compounds. From the very simple: methane To the very complex:
OCR (A) Chemistry A-level. Module 6: Organic Chemistry and Analysis
OCR (A) Chemistry A-level Module 6: Organic Chemistry and Analysis Organic Synthesis Notes by Adam Robertson DEFINITIONS Heterolytic fission: The breaking of a covalent bond when one of the bonded atoms
CHEMISTRY
CHEMISTRY PAPER 1 (THEY) (Maximum marks: 70) (Time allowed: Three hours) (Candidates are allowed additional 15 minutes for only reading the paper. They must NOT start writing during this time.) All questions
PETE 203: Properties of oil
PETE 203: Properties of oil Prepared by: Mr. Brosk Frya Ali Koya University, Faculty of Engineering, Petroleum Engineering Department 2013 2014 Lecture no. (2): Crude oil chemistry and composition 5. Crude
AND TECHNIQUES. Unit. I. Multiple Choice Questions (Type-I)
Unit 12 ORGANIC CHEMISTRY SOME BASIC B PRINCIPLES AND TECHNIQUES I. Multiple Choice Questions (Type-I) 1. Which of the following is the correct IUPAC name? 3-Ethyl-4, 4-dimethylheptane 4,4-Dimethyl-3-ethylheptane
Unit 7 Part 3 Introduction to Organic Chemistry Simple Reactions of Hydrocarbons UNIT 7 INTRODUCTION TO ORGANIC CHEMISTRY
Unit 7 Part 3 Introduction to Organic hemistry Simple Reactions of ydrocarbons UNIT 7 INTRODUTION TO ORGANI EMISTRY PART 3 SIMPLE REATIONS OF YDROARBONS ontents 1. Alkanes 2. Alkenes 3. Alkynes 4. Benzene
Alkyl phenyl ketones are usually named by adding the acyl group as prefix to phenone.
Aldehydes, Ketones and Carboxylic Acids Nomenclature of aldehydes and ketones Aldehydes: Often called by their common names instead of IUPAC names. Ketones: Derived by naming two alkyl or aryl groups bonded
ORGANIC CHEMISTRY
RGANIC CEMISTRY Short Answer Questions: 1. Explain the following with suitable examples? a) Wurtz Reaction. b) Kolbe s Electrolysis. c) Friedal Craft s Alkylation Ans. a) Wurtz Reaction: Alkyl halides
CHEMISTRY HIGHER LEVEL
*P15* PRE-LEAVING CERTIFICATE EXAMINATION, 2008 CHEMISTRY HIGHER LEVEL TIME: 3 HOURS 400 MARKS Answer eight questions in all These must include at least two questions from Section A All questions carry
MOCK CET TEST PAPER
MOCK CET TEST PAPER-2-2012 1. Conductivity of a solution is directly proportional to 1) dilution 2) number of ions 3) current density 4) volume of the solution 2. Which of the following is a Lewis acid?
ALKYNE, AROMATIC HYDROCARBONS OR ARENES ALKYNES. Alkynes are unsaturated hydrocarbon with at least one triple bond between two carbon atoms ( C = C)
ALKYNES Alkynes are unsaturated hydrocarbon with at least one triple bond between two carbon atoms ( C = C) Their general formula is Cn H2n-2 They are also called as a acetylenes STRUCTURE OF ALKYNES Each
Class XII - Chemistry Aldehydes, Ketones and Carboxylic Acid Chapter-wise Problems
Class XII - Chemistry Aldehydes, Ketones and Carboxylic Acid Chapter-wise Problems I. Multiple Choice Questions (Type-I) 1. Addition of water to alkynes occurs in acidic medium and in the presence of Hg
National 4/5 Chemistry
National 4/5 hemistry omework Unit 2 Nature s hemistry Please do not write on these booklets questions should be answered in homework jotters. Part 1 Introduction to Unit 2 1. You are given three unlabelled
Chapter -12 Organic Chemistry-Some Basic Principles and Technique One Mark questions
Chapter -12 Organic Chemistry-Some Basic Principles and Technique One Mark questions 1. What is the type of hybridization of each carbon in the following. a) CH 3 CHO b) CH 3 CN c) CH 2 = CHCl d) CH 3
Organic Chemistry is the chemistry of compounds containing.
Chapter 21 Lecture Notes Organic Chemistry Intro Organic Chemistry is the chemistry of compounds containing. The Bonding of Carbon Because carbon has four valence electrons, it can form covalent bonds.
AP Chemistry Chapter 22 - Organic and Biological Molecules
AP Chemistry Chapter - Organic and Biological Molecules.1 Alkanes: Saturated Hydrocarbons A. Straight-chain Hydrocarbons 1. Straight-chain alkanes have the formula C n H n+. Carbons are sp hybridized The
CHEMISTRY HIGHER LEVEL
*P15* PRE-LEAVING CERTIFICATE EXAMINATION, 2009 CHEMISTRY HIGHER LEVEL TIME: 3 HOURS 400 MARKS Answer eight questions in all These must include at least two questions from Section A All questions carry
1. How many moles of hydrogen are needed to completely react with 2.00 moles of nitrogen?
Stoichiometry Mole-to-Mole 1. How many moles of hydrogen are needed to completely react with 2.00 moles of nitrogen? N 2 + H 2 NH 3 2. If 5.50 moles of calcium carbide (CaC 2 ) reacts with an excess of
ICSE-Science 2(Chemistry) 2009
ICSE-Science 2(Chemistry) 2009 Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading
ICSE Board Class X Chemistry Board Paper 2014 Solution SECTION I
ICSE Board Class X Chemistry Board Paper 2014 Solution SECTION I Answer 1 1) D 2) B 3) C 4) A 5) C 6) A 7) D 8) C 9) A 10) D 11) 1 12) Sodium ethoxide 13) CaO is alkaline 14) Downward displacement of air
1. How do you account for the formation of ethane during chlorination of methane?
1. How do you account for the formation of ethane during chlorination of methane? The formation of ethane is due to the side reaction in termination step by the combination of two CH 3 free radicals. 2.
ORGANIC MOLECULES (LIVE) 10 APRIL 2015 Section A: Summary Notes and Examples Naming and Functional Groups
ORGANIC MOLECULES (LIVE) 10 APRIL 2015 Section A: Summary Notes and Examples Naming and Functional Groups Important Features of Carbon There are different allotropes (same element, same phase, different
1. CONCEPTS IN ORGANIC CHEMISTRY 2. SYNTHETIC ORGANIC CHEMISTRY 3. ISOMERISM II 4. HYDROCARBONS II 5. HALOALKANES. Vikasana - CET 2012
CET OBJECTIVE QUESTION ON 1. CONCEPTS IN ORGANIC CHEMISTRY 2. SYNTHETIC ORGANIC CHEMISTRY 3. ISOMERISM II 4. HYDROCARBONS II 5. HALOALKANES 1.The inductive effect a. Implies the atoms ability to cause
Indian School Muscat. Chemistry IIT - JEE
Indian School Muscat Chemistry IIT - JEE HALOALKANES AND HALOARENES 1. Which one of the following is not formed when a mixture of methyl bromide and bromobenzene is heated with sodium metal in the presence
The Simplest Alkanes. Physical Properties 2/16/2012. Butanes are still gases. bp -160 C bp -89 C bp -42 C. CH 3 CH 2 CH 2 CH 2 CH 3 n-pentane.
The Simplest Alkanes Butanes are still gases Methane (CH 4 ) Ethane (C 2 H 6 ) Propane (C 3 H 8 ) n-butane CH 2 CH 2 Isobutane ( ) 3 CH bp -160 C bp -89 C bp -42 C bp -0.4 C bp -10.2 C Branched isomer
Organic Chemistry. Dr. Catherine Tan. (IGCSE Chemistry Syllabus )
Organic Chemistry (IGCSE Chemistry Syllabus 2016-2018) Number of carbon(s) Root Alkanes Alkenes Alcohols Carboxylic acids 1 Meth- Methane Methene Methanol Methanoic acid 2 Eth- Ethane Ethene Ethanol Ethanoic
Science NCERT Exemplar Solutions Chapter 1: Chemical Reactions and Equations
Science NCERT Exemplar Solutions Chapter 1: Chemical Reactions and Equations Multiple Choice Questions (MCQs) Q. 1 Which of the following is not a physical change? (a) Boiling of water to give water vapour
MODULE-16 HYDROCARBONS. Hydrocarbons can be classified according to the types of bonds between the carbon atoms:
MODULE-16 YDROARBONS SATURATED AND UNSATURATED YDROARBONS:- ydrocarbons can be classified according to the types of bonds between the carbon atoms: (i) Saturated hydrocarbons have only single bonds between
MOSTLY ALCOHOLS. Question 2, 2017 The structure of a molecule of an organic compound, threonine, is shown below.
MOSTLY ALCOHOLS Modified Question 1, 2017 A chemistry class was learning about the chemistry of haloalkanes. They were researching the effect of heat and concentrated potassium hydroxide in ethanol, conc.
BELPAHAR ENGLISH MEDIUM SCHOOL. Pre-Final Examination CLASS X SUB CHEMISTRY FM :80 TIME : 1 1/2 hours
BELPAHAR ENGLISH MEDIUM SCHOOL Pre-Final Examination- 2008 CLASS X SUB CHEMISTRY FM :80 TIME : 1 1/2 hours Answers to this Paper must be written on the paper provided separately. You will not be allowed
Q1. Pentanenitrile can be made by reaction of 1-bromobutane with potassium cyanide.
Q1. Pentanenitrile can be made by reaction of 1-bromobutane with potassium cyanide. Which of these is the correct name for the mechanism of this reaction? A B C D Electrophilic addition Electrophilic substitution
Chemistry (962) The achievement of candidates for this subject according to grades is as follows:
Chemistry (962) OVERALL PERFORMANCE The number of candidates for this subject was 8504. The percentage of candidates who obtained a full pass was 72.24%, an increase of 2.23% compared with the previous
Haloalkanes. Isomers: Draw and name the possible isomers for C 5 H 11 Br
Haloalkanes The basics: The functional group is a halogen atom: F, Cl, Br or I General formula C n H 2n+1 X Use the prefixes: fluoro, chloro, bromo and iodo. Isomers: Draw and name the possible isomers
Chapter 10: Carboxylic Acids and Their Derivatives
Chapter 10: Carboxylic Acids and Their Derivatives The back of the white willow tree (Salix alba) is a source of salicylic acid which is used to make aspirin (acetylsalicylic acid) The functional group
3. What number would be used to indicate the double bond position in the IUPAC name for CH 3 CH 2 CH=CH CH 3 a. 1 b. 2 c. 3 d.
Chapter 2 Unsaturated Hydrocarbons MULTIPLE CHOICE 1. Name a difference between a saturated and an unsaturated hydrocarbon. a. Saturated hydrocarbons are composed of only carbon and hydrogen, and unsaturated
SYNTHETIC ORGANIC CHEMISTRY
SYNTHETIC ORGANIC CHEMISTRY 1. The credit for synthesizing first organic compound in the laboratory went to a) Berzelius b) Wohler c) Kolbe d) Berthelot Ans : b) Wohler [Note : (i) N H 4 Cl+KCNO NH 4 CNO
Organic Chemistry Worksheets
Highlight the single longest, continuous carbon-carbon chain. Note the alkyl branches that are connected to the root chain. Count the carbons in the root chain, starting from the end closest to the alkyl
MONICA COACHING CENTRE An Institute For Science Classes JALANDHAR, PUNJAB CARBON AND COMPOUNDS
CARBON AND COMPOUNDS The atmosphere has only 0.03% of carbon dioxide. The number of electrons lost or gained by an atom to complete its octet (or duplet) is called its valency. It depends on the number
Alkenes. Dr. Munther A. M-Ali For 1 st Stage Setudents
Alkenes Dr. Munther A. M-Ali For 1 st Stage Setudents Alkenes Family of hydrocarbons, the alkenes, which contain less hydrogen, carbon for carbon, than the alkanes Structure of ethylene, The carbon-carbon
Downloaded from
Bal Bharati Public School, Pitampura CLASS X CHEMISTRY ASSIGNMENT CARBON AND ITS COMPOUNDS Q1. Write the IUPAC names of the following? (a) CH 3 OH. (b) CH 3 COOH. Q2. Which two of the following compounds