chemistry code : ss-5541-chem paper solution · 2 / 18 chemistry rbse-xii-2014 examination career...

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CHEMISTRY RBSE-XII-2014 EXAMINATION

CAREER POINT, CP Tower, Road No.1, IPIA, Kota (Raj.), Ph: 0744-3040000 Website : www.careerpoint.ac.in, Email: [email protected]

CAREER POINT

CHEMISTRY PAPER & SOLUTION

Time : 3 41 Hours M.M. 56

ijh{kkfFkZ;ksa ds fy, lkekU; funZs'k : (1) ijh{kkFkhZ loZizFke vius iz'u i=k ij ukekad vfuok;Zr% fy[ksaA (2) lHkh iz'u gy djus vfuok;Z gSA (3) izR;sd iz'u dk mRrj nh xbZ mRrj iqfLrdk esa gh fy[ksaA (4) ftu iz'uksa esa vkUrfjd [k.M gSa] mu lHkh ds mRrj ,d lkFk gh fy[ksaA (5) iz'u i=k ds fgUnh o vaxzsth :ikUrj esa fdlh izdkj dh =kqfV@vUrj@fojks/kkHkkl gksus ij fgUnzh Hkk"kk ds iz'u dks

lgh ekusaA (6) Q. la[;k vad izR;sd iz'u 1 – 13 1 14 – 24 2 25 – 27 3 28 – 30 4 (7) iz'u Øekad 21 & 27 ls 30 esa vkUrfjd fodYi gSaA

Q.1 dksbZ /kkrq viuh mPpre vkWDlhdj.k voLFkk dsoy vkWDlkbM vFkok ¶yqvksjkbM esa gh D;ksa iznf'kZr djrh gS ? 1 Sol. ,d /kkrq viuh mPpre vkWDlhdj.k voLFkk vius vkWDlkbM o ¶yqvksjkbM esa n'kkZrk gS D;ksafd O o F rRo mPp

fo|qr_.kh gSaA Q.2 vki ,d in esa lksfM;e ,flVsV dks esFksu esa ifjofrZr dSls djsaxs ? 1 Sol. CH3–COONa

)elimSoda(

CaONaOH → + CH4

fodkckZsfDlyhdj.k vfHkfØ;k }kjk Q.3 vki fQukWy dks cSaUthu esa ifjofrZr dSls djsaxs ? 1 Sol. fovkWDlhtuhdj.k vfHkfØ;k }kjk

OH

ZnO

/Zn

−

∆ →

H

Code : SS-5541-Chem

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CAREER POINT

Q.4 tc ,sFksukWy dh fØ;k lkUnz H2SO4 ds lkFk 413 K ij djkbZ tkrh gS] rc eq[; mRikn D;k gS ? 1

Sol. C2H5–O–C2H5

Q.5 cSUthu Mkb,tksfu;e DyksjkbM dh fQukWy ds lkFk ;qXeu vfHkfØ;k fyf[k,A 1

Sol.

HO H + Cl–N=N

Coupling reaction

HO N=N

(Azo-dyes)

Q.6 (i) ,syhQSfVd ,oa (ii) ,sjkseSfVd izkFkfed ,ehuksa dh ukbVªl vEy ls vfHkfØ;k,a fyf[k,A 1

Sol. R–NH2 + HNO2 → R–OH (Aliphatic amine) (Alcohol)

NH2 + HNO2

→

N=N–Cl

(Aromatic amine) (Diazonium salt)

Q.7 rki n`<+ cgqyd D;k gS ? 1

Sol. rki n`<+ cgqyd – U;wu vkf.od Hkkj okyk cgqyd tks izcy xeZ djus ij Hkh vius vkdkj esa ifjorZu ugha djrkA

Q.8 PHBV cgqyd ds ,dydksa ds uke fyf[k,A 1 Sol. 3-gkbMªksfDlC;qVsukWbd vEy + 3-gkbMªksfDlisUVsukWbd vEy

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CAREER POINT

Q.9 ukbykWu 6,6 fdl izdkj izkIr fd;k tkrk gS ? vfHkfØ;k nhft,A 1

Sol.

O

¼,Mhfid vEy½

n HO–C–(CH2)4–C–OH + n H2N–(CH2)6–NH2

O

¼gSDlkesFkhyhu Mkb,ehu½

mPp nkc&rki

—C–(CH2)4–C–NH — NH–(CH2)6–NH—n

O O

ukbykWu–66

Q.10 og jklk;fud vfHkfØ;k fyf[k, ftlls Xywdksl esa dkckZsfuy lewg dh mifLFkfr dh i`f"V gksrh gSA 1

Sol. gkbMªksfDly ,ehu ls fØ;k&vkWfDle fuekZ.k

CHO

(CH–OH)4

CH2–OH

H2N–OH CH=N–OH

(CH–OH)4

CH2–OH

;k HCN ls fØ;k&Xywdkst lk;uksgkbMªhu dk fuekZ.k

CHO

(CH–OH)4

CH2–OH

HCN CH

(CH–OH)4

CH2–OH

CNOH

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CAREER POINT

Q.11 foVkfeu A, B, C o D dks ty rFkk olk esa foys;rk ds vk/kkj ij oxhZd`r dj mudh rqyuk dhft,A 1

Sol. olk foys; – A, D ty foys; – B, C foVkfeu L=kksr vHkko jksx vit.-A xktj] nw/k] ftjksIFksfYe;k o

eNyh jrkas/kh vit.-B1 gjh lfCt;k¡] csjh&csjh

nw/k] nkysa vkfn vit.-C uhcw] vk¡oyk LdohZ vit.-D lw;Zizdk'k] fjdsV~l eNyh] v.Mk

Q.12 eksukslsdsjkbM D;k gksrs gSa ? 1

Sol. eksukslsdsjkb& os ljyre 'kdZjk,a ftuesa –CHO ;k C=Olewg gks rFkk ftUgsa vkxs vU; 'kdZjk v.kq esa vi?kfVr u

fd;k tk ldsA

Q.13 gkWQeku czksesekbM vfHkfØ;k fyf[k,A 1

Sol. gkWQeku czksesekbM vfHkfØ;k : R–CO–NH2 + Br2 + 2KOH → R–NH2 + 2KBr

Q.14 D;k gksrk gS tc 1º ,oa 2º i`Fkd ,sYdksgkWyksa dk futZy Øksfe;e VªkbvkWDlkbM (CrO3) }kjk vkWDlhdj.k fd;k tkrk gS?

jklk;fud lehdj.ksa fyf[k,A 2

Sol. R–CH2–OH → 3CrO R–CHO

R–CH–R

OH

CrO3 R–C–R

O

R–C–OH

R

CrO3 ×××

R

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CAREER POINT

Q.15 fuEu vfHkfØ;kvksa dh dksfV crkb, : 4 × 1/2

(a) d`f=ke ukfHkdh; {k;

(b) mPp nkc ij xSlh; veksfu;k dk rIr Pt-lrg ij fo;kstu

(c) ,Fkhu dk gkbMªkstuu

(d) N2O5 dk vi?kVuA

Sol. (a) çFke dksfV vfHkfØ;k

(b) 'kwU; dksfV vfHkfØ;k 2NH3 → AuorPt N2 + 3H2

(c) 'kwU; dksfV vfHkfØ;k

(d) çFke dksfV vfHkfØ;k 4N2O5 → 4NO2 + O2

Q.16 (a) flYoj ijek.kq dh ewy voLFkk esa iw.kZ Hkfjr d-d{kd (4d10) gSa] fQj Hkh ;g ,d laØe.k rRo gSA dSls ?

(b) ,fDVukW;M vkdqapu le>kb,A 1 + 1

Sol. (a) laØe.k rRo ;k vk;u esa ,d vkarfjd d-midks"k vkaf'kd Hkjk gksrk gSA

Ag + 2 vkWDlhdj.k voLFkk Hkh n'kkZrk gSA

Ag+2 = [Kr] 55º 4d9

;g vkaf'kd Hkjk d-midks"k j[krk gS vr% Ag laØe.k rRo gSA

(b) ,sfDVukbM Js.kh esa ijek.kq Øekad c<+us ij ijekf.od ;k vk;fud f=kT;k esa deh vkrh gS] bls gh ,sfDVukbM

vkadqpu dgrs gSA

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CAREER POINT

Q.17 fuEufyf[kr vfHkfØ;kvksa ls izkIr mRiknksa dk vuqeku yxkb, : 4 × 1/2

(a) CH3–CH2–Br + AgCN → )alcohol.aq(

(b) CH3–CH2–Br + KNO2 → )alcohol.aq(

(c)

Cl

'kw"d bZFkj

(d) CH3–I + Mg 'kw"d bZFkj

Sol. (a) CH3–CH2–Br + AgCN → )alcohol.aq( ukbMvkblkslk;

NC–CH–CH 23

(b) CH3–CH2–Br + KNO2 → )alcohol.aq( kbVfFkyukbVª,

ON–O–CH–CH 23 =

(c)

Cl

+ Na'kw"d bZFkj

(d) CH3–I + Mg 'kw"d bZFkj CH3–Mg–I

Q.18 (a) /kkrqvksa ds 'kqf)dj.k {ks=k esa milgla;kstu ;kSfxdksa dk vuqiz;ksx ,d mnkgj.k ds lkFk le>kb,A

(b) milgla;kstu ;kSfxd [Ag(NH3)2] [Ag(CN)2] dk IUPAC uke fyf[k,A 1 + 1

Sol. (a) Ni ds 'kks/ku esa ekW.M fof/k dk iz;ksx gksrk gSA bl fof/k esa CO, Ni ds lkFk ok"I'khy ladqy [Ni(CO)4] cukrk gSA

Ni + 4CO →∆ [Ni(CO)4] →∆ Ni + 4CO↑

v'kq) ok"i'khy 'kq)

(b) [Ag(NH3)2] [Ag(CN)2]

MkbZ,sEehuflYoj (I) MkbZlk;uksvtsZ.VsV (I)

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CAREER POINT

Q.19 f}&yo.k rFkk ladqy esa vUrj le>krs gq, izR;sd dk ,d&,d mnkgj.k nhft,A 2

Sol.

f}&yo.k ladqy yo.k

1. mnkgj.k%

FeSO4.(NH4)2SO4.6H2O

eksgj yo.k

1. mnkgj.k%

K4[Fe(CN)6]

iksVSf'k;e Qsjkslk;ukbM

2. ;s yo.k ty esa iw.kZr% vk;fur gks ldrs gSA 2. ;s yo.k ty esa iw.kZr% vk;fur ugha gks ldrs gSaA

3. budk tyh; foy;u lHkh vk;uksa dk

ijh{k.k nsrk gSA

3. budk tyh; foy;u lHkh vk;uksa dk ijh{k.k

ugha nsrk gSA

Q.20 f}&v.kqd ukfHkdjkxh izfrLFkkiu vfHkfØ;k (SN2) rFkk ,dkf.od ukfHkdjkxh izfrLFkkiu (SN1) vfHkfØ;k dh fØ;kfof/k;ksa

esa dksbZ nks vUrj crkb;sA 2

Sol. SN1 : (1) ;g izFke dksfV dh vfHkfØ;k gksrh gSA

(2) e/;orhZ&dkcZ/kuk;u curk gSA

SN2 : (1) ;g f}rh; dksfV dh vfHkfØ;k gksrh gSA

(2) e/;orhZ&laØe.k voLFkk gksrh gSA

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CAREER POINT

Q.21 ,yqfefu;e ds fu"d"kZ.k ds fy, oS|qr vi?kVuh lsy dk ukekafdr fp=k cukb, ,oa blesa gksus okyh lEiw.kZ vfHkfØ;k fyf[k,A 2

vFkok eaMy ifj"dj.k izØe dk ukekafd fp=k cukb,A ;g fof/k eq[; :i ls fdlesa mi;ksxh gS ? 2 Sol.

Cu clamp

Fe dk VSad

C dk vLrj (dSFkksM)

Al dk fudklxfyr feJ.k (Al2O3 + Na3AlF6)

xfyr Al

Carbon (,suksM)

dSFkksM % Al+3 + 3e → Al

,suksM % C + O–2 → CO↑ + 2e–

;k] C + 2O–2 → CO2↑ + 4e–

vFkok

xfyr {ks=k

v'kq) /kkrq

'kq) /kkrqpfyr Hkêh

e.My ifj"dj.k fof/k ⇒ e.My ifj"dj.k fof/k eq[;r% Si, Ge, In, Ga, Zn vkfn ds fy, iz;qDr gksrh gSA

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CAREER POINT

Q.22 fdlh vfHkfØ;k dh v)Z vk;qdky D;k gS ? izFke dksfV vfHkfØ;k ds fy, osx lehdj.k ls ;g iqf"V dhft, fd bl

vfHkfØ;k dh v/kkZ;q vfHkfØ;dksa dh izkjfEHkd lkUnzrkvksa ij fuHkZj ugha gksrhA 2

Sol. og le; vUrjky ftlds i'pkr~ 50% fØ;kdkjd mRiknksa esa ifjofrZr gks tkrs gSaA bls v/kZvk;qdky dgrs gSA

çFke dksfV vfHkfØ;k ds lekfyr osx fu;e ds vuqlkj]

log (a0 – x) = – 303.2kt + log a0

if t = t1/2, x =2a0

log (a0 – a0/2) = – 303.2kt t1/2 + log a0

log 2a0 = –

303.2kt t1/2

+ log a0

303.2kt 2/1 = log a0 – log a0/2

303.2

kt 2/1 × = log 2/a

a

0

0 = log 2

or 2logk303.2t1/2 =

∴ t1/2 dk eku izkjfEHkd lkUnzrk a0 ij fuHkZj ugha djrkA

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CAREER POINT

Q.23 (a) D;k ge CuSO4 ds foy;u dks yksgs ds ik=k esa Hk.Mkj.k dj ldrs gSA le>kb,A 1 + 1

(b) dkWyjkÅl dk fu;e fyf[k, ,oa ,d vuqiz;ksx crkb,A

Sol. (a) ugha] D;ksafd Fe, Cu dh vis{kkÑr vf/kd lfØ; gksrk gS rFkk ;g Cu dks CuSO4 eas ls çfrLFkkfir dj nsrk gSA

Fe + CuSO4 → FeSO4 + Cu

∴ vr% dqN le; vUrjky ds i'pkr~ FeSO4 çkIr gksrk gSA

(b) fdlh oS|qr vi?kV~; dh vuUr ruqdj.k ij eksyj pkydrk fo;yu esa mifLFkr lHkh vk;uksa dh eksyj pkydrk

ds ;ksx ds cjkcj gksrh gSA

Λ∞AxBy = ∞

+λ yAx + y ∞λ x–B

or Λ∞salt = ν+

λ∞⊕ + νΘ

λ∞Θ

ν⊕ o νΘ

jllehdj.kehrh; xq.kkad

λ∞⊕ + λ∞

Θ vk;uksa dh eksyj pkydrk

vuqiz;ksx :

;g fdlh nqcZy oS|qr vi?kV~; dh fo;kstu dh ek=kk (α) o fo;kstu fu;rkad dks Kkr djus esa ç;qDr gksrh gSA

vr% nqcZy oS|qr vi?kV~; ds fy,

α = ∞ΛΛ

m

m Λm = oS|qr vi?kV~~; dh eksyj pkydrk

Λ∞m = vuUr ruqdj.k ij eksyj pkydrk

rFkk fo;kstu fu;rkad )–1(

CK2

a αα

=

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CAREER POINT

Q.24 (a) yksgs ds tax yxus dh lEiw.kZ jklk;fud vfHkfØ;k fyf[k,A (b) MsU;y lsy dh lEiw.kZ vfHkfØ;k nhft, ,oa bl lsy ds fy, usu~ZLV lehdj.k dk xf.krh; :i fyf[k,A 1 + 1 Sol. (a) yksgs ds tax yxuk ,d oS|qr jklk;fud vfHkfØ;k gksrh gSA

dSFkksM

ty

,suksM yksgs dh NM+

ikuh dh cwan ds uhps okyk Hkkx ,suksM dh Hkkafr dk;Z djrk gS rFkk bl Hkkx esa yksgs dk vkWDlhdj.k gksrk gSA ,suksM ij vfHkfØ;k % Fe(s) Fe+2 + 2e–

dSFkksM ij vfHkfØ;k % 21 O2 + 2H+ + 2e– H2O

lEiw.kZ vfHkfØ;k % Fe + 21 O2 + 2H+ Fe+2 + H2O

Fe+2 ueh o vkWDlhtu dh mifLFkfr esa vkWDlhd`r gksdj ty;ksftr Qsfjd vkWDlkbM cukrk gSA

Fe+2 + O2 + H2O → Fe2O3.xH2O ty;ksftr Qsfjd vkWDlkbM ;k tax

(b)

dSFkksM

CuSO4

ZnSO4

Zn

,suksM Θ

Cuyo.k lsrq

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CAREER POINT

,suksM o dSFkksM ij fuEu vfHkfØ;k gksrh gSA ,suksM (vkWDlhdj.k) Zn(s) Zn(aq)

+2 + 2e–1 dSFkksM (vip;u) Cu(aq)

+2 + 2e– Cu(s) _______________________________________________

Zn(s) + Cu+2(aq) _Zn+2(aq) + Cu(s)

_______________________________________________

bl lSy ds fy, usuZLV lehdj.k %

ElSy = EºlSy – nF

RT303.2 log Q ElSy = lSy dk foHko

EºlSy = lSy dk ekud foHko T = rkieku K

R = xSl fu;rkad = 8.314 Kmol

J−

Q = vfHkfØ;k xq.kkad

ElSy = EºlSy – F2RT303.2 log

]Cu[]Zn[

2

2

+

+

Q.25 (a) ;g ekurs gq, fd ijek.kq ,d nwljs ds laidZ esa gS] ljy ?kuh; /kkrq ds fØLVy esa ladqyu {kerk dh x.kuk dhft,A

(b) vk;fud Bkslksa dh izd`fr ds vk/kkj ij Ýsadsy nks"k ,oa 'kkWVdha dh rqyuk dhft,A 2 + 1

Sol. (a) ge tkurs gS fd ijek.kq ladqyu n{krk

η = 3

3

a

r34Z π×

× 100 Z = çHkkoh ijek.kqvksa dh la[;kr = d.kksa dh f=kT;k a = tkyd nwjh

effective no. of atoms per unit cell z = {a = 2r}

η = 3

3

)r2(

r341 π×

× 100 ⇒ η = 6π × 100 = 52 %

(b) (i) ;fn /kuk;u dk vkdkj cM+k gksrk gS rks 'kkWVdh nks"k curk gSA

;fn /kuk;u dk vkdj NksVk gksrk gS rks QSUdy nks"k curk gSA

(ii) 'kkWVdh nks"k ds i'pkr~ fØLVy ?kuRo ?kV tkrk gS tcfd QSUdy nks"k ds i'pkr~ ?kuRo yxHkx leku jgrk gSA

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CAREER POINT

Q.26 (a) (i) ty ok"i nkc dk D;k gksxk ;fn ,d pEep mlesa Mky nh tk;s ? (2 × 1/2) + 1 + 1

(ii) o`gn.kqvksa ds eksyj nzO;eku Kkr djus ds fy, dkSulk v.kqla[; xq.k/keZ mi;qDr gS ?

(b) D;k DoFkukad dk mUu;u leku gksxk ;fn 0.1 eksy lksfM;e DyksjkbM ;k 0.1 eksy phuh dks 1 yhVj ty esa

foys; fd;s tk, ? le>kb,A

(c) D;k ge fLFkj&DokFkh feJ.k ds ;kSfxdksa dks izHkkth vklou }kjk i`Fkd dj ldrs gSa ? le>kb,A

Sol. (a) (i) ;fn ,d pEep phuh ikuh esa feykbZ tkrh gS rks ty dk ok"i nkc ?kV tkrk gSA D;ksafd foys; o foyk;d ds

e/; vUrj v.kqd vkd"kZ.k cy c<+ tkrk gSA

(ii) ijklj.k nkc v.kqHkkj Kkr djus esa ç;qDr gksrk gS D;ksafd tc vok"i'khy foys; feyk;k tkrk gS rks mPp

ijklj.k nkc mRiUu gksrk gSA rFkk ç;ksfxx eku esa FkksM+h lh =kqfV ls eksyj æO;eku esa dksbZ vUrj ugha vkrk gSA

(b) ugha] D;ksafd foy;u esa feyk, x, d.kksa dh la[;k leku ugha gS pw¡fd NaCl dk vk;uu gksrk gS vr% nqxqus d.k

çkIr gksrs gSa] vkSj DoFkukad esa mUu;u vis{kkÑr mPp gksrk gSA

(c) pw¡fd fLFkjDokFkh feJ.k ds ?kVd ,d fuf'pr rkieku ij mcyrs gSa vr% mUgsa çHkkth vklou ds }kjk i `Fkd

djuk laHko ugha gSA

Q.27 fuEu dks le>kb, : 1 + 1 + 1

(a) iwfrjks/kh

(b) d`f=ke e/kqjd

(c) izfr&vEy

vFkok

fuEu dks le>kb, : 1 + 1 + 1

(a) folaØkeh

(b) [kk| ifjj{kd

(c) iz'kkard

14 / 18



CAREER POINT

Sol. (a) iwfrjks/kh % mÙkdksa ij iz;qDr gksus okyh vkS"kf/k;ka tks jksxk.kqvksa dh o`f) jksdrh gSA mnk- lksÝkekbflu

(b) d̀f=ke e/kqjd % MkbfcfVd jksxh;ksa ds fy, 'kdZjk ds LFkku ij iz;qDr e/kqjd] d̀f=ke e/kqjd dgykrs gSA mnk- ,LikjVse

(c) izfr&vEy % vek'k; dh vEyrk dks de djus okys jlk;u izfr vEy dgykrs gSA mnk- vksEisjktksy

vFkok

(a) folaØkeh % futhZo oLrqvksa ij jksxk.kqvksa dk uk'k djus ds fy, iz;qDr jlk;u folaØkeh dgykrs gSaA mnk- 0.2%fQukWy

(b) [kk| ifjj{kd % os inkFkZ tks [kk| inkFkkZsa ij lq{e thoksa dh o`f) dks jksd dj mUgsa lM+us ls cpkrs gSaA

mnk- lksMh;e csUtks,V

(c) iz'kkard % os jlk;fud inkFkZ tks raf=kdk ra=k dks izHkkfor djrs gq, ruko dks de djus dk dk;Z djrs gSA

Q.28 (a) lksus dk dksykbMh lkWy cukus dh fof/k dk fp=k lfgr o.kZu dhft,A 2 + 1 + 1

(b) lkWy ,oa tSy esa D;k vUrj gS ?

(c) Ladnu fdls dgrs gSa ? le>kb,A

vFkok

(a) oS|qr vi?kV~; dh vfrfjDr ek=kk dh v'kqf);ka okys dksykbMh foy;u ds 'kqf)dj.k dh fof/k dk fp=k lfgr

o.kZu dhft,A

(b) ,jkslkWy ,oa Qkse esa D;k vUrj gS ?

(c) isIVu fdls dgrs gSa ? le>kb,A 2 + 1 + 1

15 / 18



CAREER POINT

Sol. (a)

Aulksus ds bysDVªkWM

ek/;e

cQZ

+ –

tc mPp foHko dk vkos'k lksus ds bysDVªkWMksa ds e/; çokfgr fd;k tkrk gS rks nksuksa ds e/; oS|qr fpajxkjh

mRiUu gksrh gSA ftlds QyLo:i /kkrq bysDVªkWM NksVs-NksVs VqdM+ksa esa fofHkDr gksdj ek/;e esa ?kqy tkrk gS vkSj

dksykbMh foy;u çkIr gksrk gSA

(b) lkWy Bksl dk æo esa dksykbMh foy;u gksrk gS tSls % isUV] L;kgh] tSy æo dk Bksl esa dksykbMh foy;u gksrk gS

tSls % iuhj] tSyh] tSeA

(c) tc dksykbMh foy;u esa oS|qr vi?kV~; feyk;k tkrk gS rks dksykWbMh d.kksa ls vkos'k fujLr gks tkrk gS o d.k

vkil esa tqM+dj o`gn d.kksa dk fuekZ.k djrs gS o ik=k ds iSans ij vo{ksfir gks tkrs gSaA bls LdUnu dgrs gSA

vFkok

(a) viksgu % tc v'kq) dksykbMh foy;u dks lSyksQsu FkSys esa j[kk tkrk gS] rks v'kqf);ka eghu fNnzksa ls ckgj

fudyus yxrh gSA ty bu v'kqf);ksa dks cgkdj ys tkrk gSaA v'kqf);ksa dks 'kh?kzrk ls gVkus ds fy, dksykbMh

foy;u dks oS|qr {ks=k esa j[krs gSA bls oS|qr viksgu dgrs gSaA

+

–

H2O

H2O

v'kq)

dksykbMh

foy;u

16 / 18



CAREER POINT

(b) tc ok;q ek/;e gksrk gS vkSj nzo vFkok Bksl ifjf{kIr izkoLFkk gksrs gaS] rks ,sjkslkWy izkIr gksrs gSaA tcfd nzo esa ok;q

dk dksykbMh foy;u >kx dgykrk gSA

(c) vo{ksi dks fo?kfVr djds dksykbMh foy;u izkIr djuk isIVhdj.k dgykrk gSA vo{ksi dks fo?kfVr djus ds fy,

tks inkFkZ feyk, tkrs gSA bUgsa isIVhdkjd dgrs gSaA tSls % Fe(OH)3 dk vo{ksi tks ikuh esa j[kk gksrk gS blesa

tc FeCl3 feyk;k tkrk gS] rks vo{ksi fo?kfVr gksdj dksykbMh foy;u dk fuekZ.k djrk gSA bls isIVhdj.k dgrs

gSa rFkk FeCl3 isIVh dkjd dgykrk gSA

FeCl3

Fe3+ Fe3+

Fe3+

Fe(OH)3 Q.29 (a) Dyksjhu ds pkj vkWDlh vEyksa ds jlk;fud lw=k fyf[k,A 2 + 1 + 1

(b) mRd`"V xSl lewg dk lkekU; bysDVªkWu foU;kl fyf[k,A pqEcdh; vuqukn izfrfcEc (MRI) esa bl lewg dk

dkSulk rRo mi;ksxh gS ?

(c) C2H5OH dh PCl3 ,oa PCl5 ds lkFk i`Fkd i`Fkd jklk;fud vfHkfØ;k,a fyf[k,A

vFkok

(a) lYQj ds pkj vkWDlh vEyksa ds jklk;fud lw=k fyf[k,A 2 + 1 + 1

(b) dsYdkstsu lewg dk bysDVªkWu foU;kl fyf[k,A ,Ile yo.k dk jk;k;fud lw=k fyf[k,A

(c) veksfu;k ,d yqbl {kkjd dh rjg O;ogkj djrk gSA le>kb,A

Sol. (a) HOCl, HClO2, HClO3, HClO4

(b) mRd`"V xSl lewg dk lkekU; e– foU;kl ns2 np6 gksrk gSA

pqEcdh; vuqukn izfrfcEc (MRI) esa He dk iz;ksx gksrk gSA

(c) 3C2H5OH + PCl3 → 3C2H5Cl + H3PO3

C2H5OH + PCl5 → C2H5Cl + POCl3 + HCl

17 / 18



CAREER POINT

vFkok

(a) H2SO3, H2SO4, H2S2O3, H2SO5

(b) dsYdkstsu lewg dk lkekU; e– foU;kl ns2 np4 gSA

,Ile yo.k dk lw=k % MgSO4.7H2O

(c) NH3 esa N-ijek.kq ij ,d ,dkdh e– ;qXe gksrk gS vr% ;g yqbZl {kkj dh rgj O;ogkj djrk gSA

Q.30 mfpr mnkgj.k ds lkFk fuEu dks le>kb,A 2 + 2

(a) jkstsueqaM vip;u

(b) xkVjeku&dkW[k vfHkfØ;kA

vFkok

mfpr mnkgj.k ds lkFk fuEu dks le>kb,A 2 + 2

(a) DyhesUlu mip;uA

(b) LVhQsu vfHkfØ;kA

Sol. (a) jkstsueqaM vip;u %

R–CO–Cl → + 4BaSOPd R–CHO

;g vEy gSykbMks ls ,fYMgkbM ds fuekZ.k dh vfHkfØ;k gSA blls ,fyQsVhd o ,jkseSfVd nksuksa ,fYMbkbM cuk, tkrs

gSA ijUrq blds }kjk H–CHO ugha cuk;k tkrk gSA D;ksafd H–CO–Cl vLFkk;h gksrk gSA

(b) xkVjeku&dkW[k vfHkfØ;k %

H

CO + HCl/AlCl3

+CHO

CHO

csUthu dh fØ;k yqbl vEy dh mifLFkfr esa CO + HCl ls djokus ij bysDLVªkWuLusgh izfrLFkkiu }kjk csUtsfYMgkbM

dk fuekZ.k gksrk gSA

vFkok

(a) DyhesUlu vip;u %

18 / 18



CAREER POINT

R Zn–Hg + HCl C=OH

RCH2

H

R Zn–Hg + HCl C=OR

RCH2

R

dkckZsfuy ;kSfxdksa dh ftadveyxe o HCl ls vip;u djokus ij ,Ydsu dk fuekZ.k djuk gh fDyesUlu vfHkfØ;k

dgykrh gSA

(b) LVhQsu vfHkfØ;k %

(SnCl2 + HCl) R–CN R–C=O

H

R–CH=NH H+ / H2O

lk;ukbMks dh fØ;k fVu o HCl ls djokus rFkk vEyh; ty vi?kVu ls ,fYMgkbM izkIr gksrs gSA

chemistry code : ss-5541-chem paper solution · 2 / 18 chemistry rbse-xii-2014 examination career...

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