GGSIPU Chemistry 2004

Transcription

1 GGSIPU Chemistry The soluility of CF 2 is s moles/litre.then soluility prout is : s 2 4s 3 3s 2 s 3 2. If P,T,r n R represents pressure,temperture,ensity n universl gs onstnt respetively,then the molr mss of the iel gs is given y : r r r r 3. The kineti energy of gs moleule is.temperture : Inepenent of iretly proportionl to inversely proportionl to irely proportionl to squre root of 4. The rtio of rte of iffusion of SO 2 M = 64) n oxygen M = 32) is : 1:1 2:1 1:2 1: An queous solution freezes t C,then elevtion in oiling point is : K = 0.512,K f = 1.86) C C C none of these g of gs oupies 280 m 3 t NTP,then its moleulr mss is :

2 7. The equivlent mss of Fe in FeO is : Chemil equtions onvey quntittive informtion of the : Type of toms/moleules tking prt in the retion Numer of toms/moleules of the retnts n prout invole in the retion Quntity of retnt onsume n quntity of prout forme None of the ove 9. Whih one of the following is miguous? mole of wletron mole of soium toms mole of potssium ions mole of hyrogen 10. In hyrolysis of slt of wek i n strong se, A - + H 2 O HA + OH -,the hyrolysis onstnt k h is equl to 11. For retion of the type A + B Prouts, the [ ] is equl to : - [ ] - X [ ] - X [ ] - X [ ] 12. In mixture of 1g H 2 n 8g O 2, the mole frtion of hyrogen is : none o f these

3 13. In i meium MnO - 4 is reue to Mn 2 +,y reuing gent. Then the equivlent mss of KMnO 4 i s given y : M = moleulr mss) m/2 M M/5 M/3 14. For the retion CH 3 COOH l + 2O 2 g 2CO 2 g + 2H 2 O l At 25 o C n 1 tm pressure, H = -874 kj.then the hnge in internl energy E is : -874 kj kj kj +874 kj 15. Riotive sustnes emit -rys, whih re : +vely hrge prtile -vely hrge prtile mssive prtile pket of energy 16. the numer of n - prtiles emitte in the retion : 8, 6 4, 4 8, 2 4, Coulom is equl to. Ampere X seon mpere x minute wtt X seon volt X seon mole of KB r rets with 1 mole of phosphori i to proue HB r together with : K 3 PO 4 K H 2 PO 4 Br 2 H 2 O

4 19. The equivlent onutnes t infinite ilution for AC,BD n CD re 91,426.2 n ohm -1 m 2 g equ -1 respetively.then the equivlent onutne of AB will e : The speifi onutivity of 0.1 N KCI solution is ohm -1 m- 1.The resistne of the solutution in the ell is 100 phm.the ell onstnt of the ell will e : The stnr wmf of ell Zn/Zn 2 + Fe 2 + /Fe, if eletroe potentils for Zn/Zn 2 + n Fe 2 + /Fe re v n V respetively is: V V V V 22. The energy is require to relese 1 eletron from He + i s : ev ev ev nnot e preite 23. is forme from in the upper tmosphere y the tion of the funmentl prtile : Position neutron eletron porton 24. Whih of the following plot reprsents the grph of ph ginst volume of lkli e in the titrtion of NOH n HCI? ph ph Volume Volume ph ph

5 25. Whih mong the following isotope is not foun in nturl urnium? 26. Whih one out of the following sttements is not orret for ortho n pr hyrogen? They hve ifferent oiling point Ortho from his less stle thn pr form They iffer in the spin of their protons The rtio of ortho to pr hyrogen inreses with inrese in temperture n finlly pure ortho form is otine 27. CO 2 is gs,while SiO 2 is soli,ut oth re : Aii ioni isrete moleules onvlent ontining -ons 28. Pure on. HNO 3 mke iron pssive, s the surfe is overe with protetive lyer of : Fe 2 O 3 FeO Fe 3 O 4 FeNO Whih of the following is not orret for D 2 O? Boiling point is higher thn H 2 O D 2 O rets slowly thn H 2 O Visosity is higher thn H 2 O t 25 0 C

6 Soluility of NCI in it is more thn H 2 O 30. Ozone when rests the potssium ioie solution liertes ertin prout,whih turns str pper lue.the lierte sustne is : oxygen ioine hyrogen ioie potssium hyroxie 31. Re hot iron sors SO 2 giving the prout : fes + O 2 FeO + FeS Fe 2 O 3 + fes feo + S 32. Ethylioie when hte with soium in ry ether gives pure : 33. For the retion C 4 H 10 C 2 H 6 C 3 H 8 C 2 H 5 OH CH 3 CH =CH 2 + H O C I A the prout A is : CH 3 CHCI CH 2 OH CH 3 CH CH 2 CL OH CH 3 CH 2 CH 2 COCI Cl CH 3 C CH Whih of the following is not orret for ioni rystls? OH They possess high melting point n oiling point All re eletrolyte Exhiit the property of isomorphism Exhiit iretionl properties of the on

7 35. Whih of the following is not true in Rutherfor s nuler moel of tom? Protons n neutrons re present insie nuleus volume of tom equl equl Volume of nuleus is very smll s ompre to The numer of protons n neutrons re lwys the numer of eletrons n protons re lwys 36. All the s-lok elements of the perioi tle re ple in the groups.. IA n IIA IIIA n IVA B su groups VA to VILA 37. The mgneti quntum numer for -oritl is given y : 2 0, ± 1, ± 2 0,1, Whih of the following moleule hs zero ipole moment? BF 3 NH 3 CHCL 3 H 2 O 39. In the proess, O 2 + O e - the eletron lost is form : oning p -oritl ntioning p -oritl 2p z oritl 2p x oritl 40. Bon etween A n B n e represente y A B, A + B -, A - B + I II III If A is more eletronegtive thn B,then lest ontriution to the tul struture omes from : I II III ll the struture hve equl ontriution

8 41. The omplex forme in ring test of qulittive nlysis for NO - 3 ion is : [FeH 2 O) 5 NO]SO 4 [FeH 2 O) 5 NO 2 ]SO SiF 4 gets hyrolyse giving : [FeNO) 5H 2 O]SO 4 FeSO 4. NO SiO 2 SiOH 2 F All ores re minerls,while ll minerls re not ores,euse : H 2 SiF 6 SiOH 4 from ll the minerls the metl n not e extrte eonomi lly minerls re omplex ompoun the minerls re otine from mines ll these re orret 44. In the retion, P 2 O 5 + 3Co C 3 PO 4 2, P 2 O 5 ts s : Aii flux si flux si impurity ii impurity 45. In the given retion,the oxie of soium is : + Aii si mphoteri neutrl 46. When CO 2 is psse through solution of lium hyroxie,whih one of the following ompoun is preipitte? CHCO 3 2 Co CCO 3 COH 2

9 47. ferri lum hs the omposition NH 4 2 SO $. Fe 2 SO 4 3. x H 2 O the vlue of x is : Wht is the generl eletroni onfigurtion for 2 n row trnsition series? [Ne] ,4s 2 [Ar] , 4 s 1-2 [Kr] ,5s 1-2 [xe] , 5 s The existene of two ifferent oloure omplexes of [CoNH 3 4 CL 2 ] + is ue to : ioniztion isomerism o -orintion isomerism linkge isomerism geometril isomerism 50. IUPAC nme of the ompoun CH 3 CH CH 2 CH CH 3 i s : OH CH 3 4 -methy pentene-2-ol 2 -methy pentnol-4 4,4 -imethyl-utne-2-ol 4 -methyl pentne-2-ol 51. Alky hlie on heting with l.nh 3 in sele tue results 1 o mine 3 0 mine 2 o mine ll of these 52. Among H CHO, CH 3 CHO n C 6 H 5 CHO, whih will unergo Cnnizro s retion? HCHO n CH 3 CHO CH 3 CHO n C 6 H 5 ChO

10 C 6 H 5 CHO n HCHO All the ove 53. The min prout of the retion of CH 3 CONH 2 with Br 2 in queous potssium hyroxie meium is : CH 3 CH 2 NH 2 CH 3 Br CH 3 CONHBr CH 3 NH In the retion, H 2 O HCHO + CH 3 MgI A B wht re A n B? CH 3 OMgI n CH 3 OH CH 3 CH 2 OMgI n C 2 H 5 O C 2 H 5 CH 3 CH 2 OMgI n CH 3 CH 2 OH CH 3 CH 2 I n CH 3 CH 2 OH 55. Aetyltion of seonry mine in lkline meium yiels : N,N ilky l etmie N,N ilky l mine N,N ilky l mie ety l ilky l mine 56. In i meium nitroenzene is reue to nline s shown in the retion C 6 H 5 NO 2 + 6[H] C 6 H 5 NH H 2 O The reuing gent use in this retion is : LiA1H 4 Sn/HCL N/Alohol H 2 /Ni 57. PVC is use for : mnufture of osmetis mn ufture of tyres

11 mnufture of nonstik pns mnufture of plsti pipes 58. Aety l sliyli i is use s : nti oxint nlgesi rug nti ioti rug nestheti 59. C 6 H 6 onsists of one ring,while npthlene onsists of two rings.both re them re romti n oey the 4n+2 rule.thus the num er of p -eletrons insie rings of C 6 H 6 n nphthlene re respetively : 3,5 5,10 6,10 6, In the oxition of C 6 H 5 CH 2 CH 3 y KMnO 4 the prout forme is : C 6 H 5 CH 2 CHO C 6 H 5 CH 2 COOH C 6 H 6 COOH C 6 H 5 CH 2 OH