JEE Main Test-2017_Chemistry (Solutions) Sol. [4] Cl. (1) Cl and ClO2 (2) ClO and ClO. (4) Cl and ClO. Sol. [4] or 20 m mol

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1 [] JEE Main Test 07_Chemistry (Solutions) JEE Main Test-07_Chemistry (Solutions). The reezin point o enzene decreases y 0.45 C when 0. o acetic acid is added to 0 o enzene. acetic acid associates to orm a dimer in enzene, percentae association o acetic acid in enzene will Sol. [] T e ( K or enzene = 5. K k mol ) () 94.6% () 64.6% (3) 80.4% (4) 74.6% ik m i i i KJ % association o CH COOH 3 in enzene.. On treatment o 00 ml o 0. M solution o CoCl 6H O with excess ANO 3 ;. 0 ions 3 are precipitated. The complex is () Co H O Cl Cl H O 5 () Co H O Cl Cl H O 4 (3) CoHO Cl H O (4) Co H O Cl Sol. [] Moles o ions mol mol 3 or 0 m mol m moles o complex = (00 ml) (0.0 M) = 0 m mol Cl ions are present outside coordination sphere Complex is Co H O Cl Cl H O 5 3. Which o the ollowin compounds will orm siniicant amount o meta product durin mono-nitration reaction? Sol. [4] () () 4. The products otained when chlorine as reacts with cold and dilute aqueous NaOH are Sol. [4] Cl () Cl and ClO () ClO and ClO 3 (3) ClO and ClO and ClO (4) Cl and ClO 5. Both lithium and manesium display several similar properties due to the diaonal relationship; however, the one which is incorrect, is 3 () nitrates o oth Li and M yield NO and O on heatin () oth orm asic caronates (3) Both orm solule icaronates (4) oth orm nitrides Sol. [] oth orm asic caronates "Guru-Kripa" Anasaar Circular Road, Ajmer Ph.No.(045) 6390, 6936

2 [] JEE Main Test 07_Chemistry (Solutions) 6. A water sample has ppm level concentration o ollowin anions 4 3 0; SO 00; NO 50 The anion/anions that make makes the water sample unsuitale or drinkin is/are () only SO 4 0. The major product otained in the ollowin reaction is () only NO 3 (3) oth SO 4 and NO 3 (4) Only Sol. [4] Only 7. The ormation o which o the ollowin polymer involves hydrolysis are satisied () Terylene () Nylon 6 (3) Bakelite (4) Nylon 6, 6 () () Sol. [] Nylon 6 8. The Tyndal eect is oserved only when ollowin conditions are satisied (a) The diameter o the dispersed particles is much smaller than the wavelenth o the liht used. () The diameter o the dispersed particle is not much smaller than the wavelenth o the liht used. (c) The reractive indices o the dispersed phase and dispersion medium are almost similar in manitude. (d) The reractive indices o the dispersed phase and dispersion medium dier reatly in manitude. () () and (c) () (a) and (d) (3) () and (d) (4) (a) and (c) Sol. [] Sol. [3] 9. pk a o a weak acid [HA] and pk o a weak ase [BOH] are 3. and 3.4, respectively. The ph o their salt (AB) solution is ().0 () 7. (3) 6.9 (4) 7.0 Sol. [3] ph pk pk pk ph = 6.9. w a "Guru-Kripa" Anasaar Circular Road, Ajmer Ph.No.(045) 6390, 6936

3 [3] JEE Main Test 07_Chemistry (Solutions). Which o the ollowin compounds will ehave as a reducin suar in an aqueous KOH solution? (4) CH MBr, A NH OH, H / CH OH () Sol. [] () (3) 3. Which o the ollowin species is not paramanetic? () B () NO Sol. [3] CO (3) CO (4) O (4) 4. Which o the ollowin, upon treatment with tert- BuONa ollowed y addition o romine water, ails to decolourize the colour o romine? Sol. [] n the presence o aq. KOH, hemiacetal is otained y the hydrolysis o ester roup.. The correct sequence o reaents or the ollowin conversion will e () () Sol. [] () A NH OH, CH MBr, H / CH OH () A NH OH, H / CH OH, CH MBr (3) CH MBr, H / CH OH, A NH OH "Guru-Kripa" Anasaar Circular Road, Ajmer Ph.No.(045) 6390, 6936

4 [4] JEE Main Test 07_Chemistry (Solutions) 5. Which o the ollowin reactions is an example o redox reaction? () Xe H O XeO 4H 6 () Xe4 O Xe6 O 5 6 (3) Xe P Xe P (4) Xe6 HO XeO4 H Sol. [] Xe4 O Xe6 O 6. U is equal to () sothermal work () sochoric work (3) soaric work (4) Adiaatic work Sol. [4] Adiaatic work 7. Which o the ollowin molecules is least resonance stailized? Sol. [] () () is not aromatic, while other molecules are aromatic. 8. The increasin order o the reactivity o the ollowin halides or the S N reaction is 9. ram o a caronate M CO 3 on treatment with excess HCl produces mole o CO. The molar mass o MCO3 in mol is ().86 () 86 (3) 84.3 (4) 8.6 Sol. [3] Moles o M CO 3 consumed = moles o CO ormed mol M M / mol / mol Sodium salt o an oranic acid 'X' produces eervescence with conc. H SO 4. 'X' reacts with the acidiied aqueous CaCl solution to ive a white precipitate which decolourises acidic solution o KMnO 4. 'X' is () NaCO4 () C6H5COONa (3) HCOONa (4) CH COONa 3 Sol. [] Na C O 4. The most aundant elements y mass in the ody o a healthy human adult are: Oxyen (6.4%); Caron (.9%); Hydroen (0.0%); and Nitroen (.6%). The weiht which a 75 k person would ain i all H atoms are replaced y H atoms is () 0 k () 5 k (3) 37.5 k (4) 7.5 k Sol. [4] Mass o 0. 0 H in human ody 75k 7. 5k 00 Replacin H y H would result in a mass ain o 7.5 k. () () < () < () () () < () < () (3) () < () < () (4) () < () < () Sol. [3] Due to the relative staility o carocations. "Guru-Kripa" Anasaar Circular Road, Ajmer Ph.No.(045) 6390, 6936

5 [5] JEE Main Test 07_Chemistry (Solutions). The major product otained in the ollowin reaction is t e j t e j () C H CH O Bu CH C H () C H CH O Bu CH C H (3) C6H5CH CHC6H e j (4) C H CH O Bu CH C H 6 5 Sol. [3] Dehydrohaloenation o alkyl halide with tert-uok. 3. Given raphite ; C O CO r H kj mol H O HO ; r H 858. kj mol CO H O CH O ; 4 r H kJ mol Based on the aove thermochemical equations, the value o r H at 98 K or the reaction C raphite H CH4 will e () 44. 0kJ mol () 74. 8kJ mol (3) 44. 0kJ mol (4) 74. 8kJ mol Sol. [4] H, CH H, O = kj / mol 4 H, CO H, H O H, CH kj / mol = kj / mol H, CH kJ / mol kj / mol 4. n the ollowin reactions, ZnO is respectively actin as a/an (a) ZnO Na O Na ZnO () ZnO CO ZnCO 3 () acid and ase () ase and acid (3) ase and ase (4) acid and acid Sol. [] acid and ase 5. The radius o the second Bohr orit or hydroen atom is: Sol. [] r (Planck's const. h Js; Mass o electron C ; permittivity o vacuum k m A ) (). Å ().65 Å (3) 4.76 Å (4) 0.59 Å r n Z a n Å r. Å. 6. Two reactions R and R have identical preexponential actors. Activation enery o R exceeds that o R y 0kJ mol. k and k are rate constants or reactions R and R respectively at 300 K, then ln k k e R 8. 34J mol K KJ is equal to () 4 () 8 (3) (4) 6 A Sol. [] ln k lna E RT ln k ln ln k k k KJ 4 KJ k ln. k E j E RT A A 0kJ 8. 34J / mol K 300 "Guru-Kripa" Anasaar Circular Road, Ajmer Ph.No.(045) 6390, 6936

6 [6] JEE Main Test 07_Chemistry (Solutions) 7. A metal crystallises in a ace centred cuic structure. the ede lenth o its unit cell is 'a', the closest approach etween two atoms in metallic crystal will e Sol. [] () a () a (3) a (4) a a 8. The roup havin isoelectronic species is () O,, Na, M () O,, Na, M (3) O,, Na, M (4) O,, Na, M Sol. [] O,, Na, M 9. Given Sol. [] Cr 0 0 Cl / Cl Cr / Cr E 36. V, E V 0 0 Cr O MnO / Mn E 33. V, E 5. V 7 4 Amon the ollowin, the stronest reducin aent is () Cl () Cr (3) Mn (4) Cr Methyl-pent--ene on reaction with HBr in presence o peroxide orms an addition product. The numer o possile stereoisomers or the product is () our () Six (3) Zero (4) Two Sol. [] "Guru-Kripa" Anasaar Circular Road, Ajmer Ph.No.(045) 6390, 6936