Past Year Paper, Chemistry (Set - 3 ), Delhi, 2014, Class 12, Chemistry | Additional Study Material for Class 12 PDF Download

 Page 1


Series : OSR/I
*I*". 
sotLtl
mr sw-Ew+r s-5q
rR €trq{q flmd r
Candidates must write the Code on
the title page of the answer-book.
+dTi.
Roll No.
!
ET
o 
!ffir 
dm 
qr 
d fo. 
gq 
srt-Et { 
Ekfl Ys 
11 t r
o Irfi-rr { Erf6+ cm *t 
sili fqq'rq +ts:rqr *t om uw-gfir*r *. ge-lg'n fu} I
o gttfidiqq,ri{flo^vs { ro s*rt r
o 
EqrnrlFtur 
rtnftrwtvF^qtr++ 
qd, 
svtqtx,qiu. wqvqft{d t
o 
{tr 
nFr-qrr si 
q6+ 
+ fuq 15 fffie 
i6T 
TFrq f<qFrqr t r 
q{{-q{ 
er fuat"r 
Wi$ 
ti 
to.ts 
qi
flffir 
sTr+rn 
I 10.15 {q t 10.30 
qQ 
aqr on *qe 
qrt-rr qti qt{ 
$r 
srqfu + dlr{ t s+c-
gksTqtot{stnqeTfu},t t
o 
Please check that this question paper contains 11 printed pages.
o 
Code number given on the right hand side of the question paper should be written on the
title page of the answer-book by the candidate.
o 
Please check that this question paper contains 30 questions.
o 
Please write dovm the Serial Number of the question before attempting it.
r 
15 minutes time has been allotted to read this question paper. The question paper will be
distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will only read the
question paper and will not write any answer on the answer-book d,uring this period.
Ttil?rtfT{rtCffi-{o,.)
CHEMISTRY 
(TheorY)
freifti v4z{ : 3 
qr*l 
Tafvaae 
aiq : 70
Timeallowed:3hours 
I 
tMaximumMarks:70
qrqrrrftTtvt:
(i) wfrvw 
erfradt r
(ii) 
yw-(iqrl 
#e rqrerfrerg-rrtfuwa t ry'dqsw#frnrl 
er*-* r
(iii) sw-d@rg I u aaag-$mfqrffi 
g 
1 v-fianw #faqz 
er+-fi I
(iv) 
yw-i@r19 
IZZ aqetldg-v'afunwt ry'de-.s{a #ftn l 
itiqt r
(v) vw-(iqr2s +30 
qH-aw?qvw* 
rrdqvw#frn's 
ar+-ff I
(vi) amwmilTstrEdrT M w sqhT ?'t / *ry*+ #wqtr aT 
erflfd a#t r
s6ty3 
1 [P.T.O.
Page 2


Series : OSR/I
*I*". 
sotLtl
mr sw-Ew+r s-5q
rR €trq{q flmd r
Candidates must write the Code on
the title page of the answer-book.
+dTi.
Roll No.
!
ET
o 
!ffir 
dm 
qr 
d fo. 
gq 
srt-Et { 
Ekfl Ys 
11 t r
o Irfi-rr { Erf6+ cm *t 
sili fqq'rq +ts:rqr *t om uw-gfir*r *. ge-lg'n fu} I
o gttfidiqq,ri{flo^vs { ro s*rt r
o 
EqrnrlFtur 
rtnftrwtvF^qtr++ 
qd, 
svtqtx,qiu. wqvqft{d t
o 
{tr 
nFr-qrr si 
q6+ 
+ fuq 15 fffie 
i6T 
TFrq f<qFrqr t r 
q{{-q{ 
er fuat"r 
Wi$ 
ti 
to.ts 
qi
flffir 
sTr+rn 
I 10.15 {q t 10.30 
qQ 
aqr on *qe 
qrt-rr qti qt{ 
$r 
srqfu + dlr{ t s+c-
gksTqtot{stnqeTfu},t t
o 
Please check that this question paper contains 11 printed pages.
o 
Code number given on the right hand side of the question paper should be written on the
title page of the answer-book by the candidate.
o 
Please check that this question paper contains 30 questions.
o 
Please write dovm the Serial Number of the question before attempting it.
r 
15 minutes time has been allotted to read this question paper. The question paper will be
distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will only read the
question paper and will not write any answer on the answer-book d,uring this period.
Ttil?rtfT{rtCffi-{o,.)
CHEMISTRY 
(TheorY)
freifti v4z{ : 3 
qr*l 
Tafvaae 
aiq : 70
Timeallowed:3hours 
I 
tMaximumMarks:70
qrqrrrftTtvt:
(i) wfrvw 
erfradt r
(ii) 
yw-(iqrl 
#e rqrerfrerg-rrtfuwa t ry'dqsw#frnrl 
er*-* r
(iii) sw-d@rg I u aaag-$mfqrffi 
g 
1 v-fianw #faqz 
er+-fi I
(iv) 
yw-i@r19 
IZZ aqetldg-v'afunwt ry'de-.s{a #ftn l 
itiqt r
(v) vw-(iqr2s +30 
qH-aw?qvw* 
rrdqvw#frn's 
ar+-ff I
(vi) amwmilTstrEdrT M w sqhT ?'t / *ry*+ #wqtr aT 
erflfd a#t r
s6ty3 
1 [P.T.O.
General Instructions :
(i) All.questions are compulsory.
(ii) 
Question 
numbers I to I are very short-answer questions and carry 7 mark each.
(iii) 
Question 
numbers 9 to 18 are short-answer questions and carry 2 marks each.
(iv) 
Question 
numbers 19 to 27 are also short-answer questions and carry 
j 
marks
each.
(v) 
Question 
numbers 28 to 30 are long-answer questions and carry 5 marks each.
(vi) 
Use Ing Tables, if necessary. Use of calculators is not allowed.
1. re Rft 
qrfi 
eil'r eie riEt {ilH sT 
\r6-qs' Eqr6{ur luri r
Give one example each of lyophobic sol and lyophitc sol.
z. 
q\trocg. 
- 
cH 
- 
cHr- g 
- 
cH,
' 
| 
' 
ll 
---j
oHo
S'I IUPAC;NTT fui I
Write the IUPAC name of the compound.
cHr-cH-cHr-g-CH,
-t-lt
oHo
3. t+{fi sil{t+ciq grq 
ii 
*}a 
qr 
si<R-eT{F 
effids'nq1q fls?flqilt 
*or t r
What type of intermolecular attractive interaction exists in the pair of methanol and
acetone ?
4. FF{ ffi { t 
qfm 
m srftmeTrqt 
E}-dr t 
si{ Fif r
[co(NH3)6]3* 
sk 
[co(en)r]3+
Which of the following is more stable complex and why ?
[Co(NH3)6]3+ 
and 
[Co(en)r]3+
s. 
w 
qltnri 
m] 
q{Rm.{n 
+e6+ mq 
i} 
g{: 
qqflem qfrH 
:
Arrange the following in increasing order of basic strength :
' 
coHsNH? C6H5NHCH3, C6H5N(CH,2
6. q*tm+q*qfrEre{+lin,umd*'qmftri 
I
Name the products of hydrolysis of sucrose.
561U3 
'2
Page 3


Series : OSR/I
*I*". 
sotLtl
mr sw-Ew+r s-5q
rR €trq{q flmd r
Candidates must write the Code on
the title page of the answer-book.
+dTi.
Roll No.
!
ET
o 
!ffir 
dm 
qr 
d fo. 
gq 
srt-Et { 
Ekfl Ys 
11 t r
o Irfi-rr { Erf6+ cm *t 
sili fqq'rq +ts:rqr *t om uw-gfir*r *. ge-lg'n fu} I
o gttfidiqq,ri{flo^vs { ro s*rt r
o 
EqrnrlFtur 
rtnftrwtvF^qtr++ 
qd, 
svtqtx,qiu. wqvqft{d t
o 
{tr 
nFr-qrr si 
q6+ 
+ fuq 15 fffie 
i6T 
TFrq f<qFrqr t r 
q{{-q{ 
er fuat"r 
Wi$ 
ti 
to.ts 
qi
flffir 
sTr+rn 
I 10.15 {q t 10.30 
qQ 
aqr on *qe 
qrt-rr qti qt{ 
$r 
srqfu + dlr{ t s+c-
gksTqtot{stnqeTfu},t t
o 
Please check that this question paper contains 11 printed pages.
o 
Code number given on the right hand side of the question paper should be written on the
title page of the answer-book by the candidate.
o 
Please check that this question paper contains 30 questions.
o 
Please write dovm the Serial Number of the question before attempting it.
r 
15 minutes time has been allotted to read this question paper. The question paper will be
distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will only read the
question paper and will not write any answer on the answer-book d,uring this period.
Ttil?rtfT{rtCffi-{o,.)
CHEMISTRY 
(TheorY)
freifti v4z{ : 3 
qr*l 
Tafvaae 
aiq : 70
Timeallowed:3hours 
I 
tMaximumMarks:70
qrqrrrftTtvt:
(i) wfrvw 
erfradt r
(ii) 
yw-(iqrl 
#e rqrerfrerg-rrtfuwa t ry'dqsw#frnrl 
er*-* r
(iii) sw-d@rg I u aaag-$mfqrffi 
g 
1 v-fianw #faqz 
er+-fi I
(iv) 
yw-i@r19 
IZZ aqetldg-v'afunwt ry'de-.s{a #ftn l 
itiqt r
(v) vw-(iqr2s +30 
qH-aw?qvw* 
rrdqvw#frn's 
ar+-ff I
(vi) amwmilTstrEdrT M w sqhT ?'t / *ry*+ #wqtr aT 
erflfd a#t r
s6ty3 
1 [P.T.O.
General Instructions :
(i) All.questions are compulsory.
(ii) 
Question 
numbers I to I are very short-answer questions and carry 7 mark each.
(iii) 
Question 
numbers 9 to 18 are short-answer questions and carry 2 marks each.
(iv) 
Question 
numbers 19 to 27 are also short-answer questions and carry 
j 
marks
each.
(v) 
Question 
numbers 28 to 30 are long-answer questions and carry 5 marks each.
(vi) 
Use Ing Tables, if necessary. Use of calculators is not allowed.
1. re Rft 
qrfi 
eil'r eie riEt {ilH sT 
\r6-qs' Eqr6{ur luri r
Give one example each of lyophobic sol and lyophitc sol.
z. 
q\trocg. 
- 
cH 
- 
cHr- g 
- 
cH,
' 
| 
' 
ll 
---j
oHo
S'I IUPAC;NTT fui I
Write the IUPAC name of the compound.
cHr-cH-cHr-g-CH,
-t-lt
oHo
3. t+{fi sil{t+ciq grq 
ii 
*}a 
qr 
si<R-eT{F 
effids'nq1q fls?flqilt 
*or t r
What type of intermolecular attractive interaction exists in the pair of methanol and
acetone ?
4. FF{ ffi { t 
qfm 
m srftmeTrqt 
E}-dr t 
si{ Fif r
[co(NH3)6]3* 
sk 
[co(en)r]3+
Which of the following is more stable complex and why ?
[Co(NH3)6]3+ 
and 
[Co(en)r]3+
s. 
w 
qltnri 
m] 
q{Rm.{n 
+e6+ mq 
i} 
g{: 
qqflem qfrH 
:
Arrange the following in increasing order of basic strength :
' 
coHsNH? C6H5NHCH3, C6H5N(CH,2
6. q*tm+q*qfrEre{+lin,umd*'qmftri 
I
Name the products of hydrolysis of sucrose.
561U3 
'2
7 . F 
eTE*T{t 
$q-€rflM) 
t t ftt{ sr 
qftroqrsT{flm 
t t
o-qrtifi r{n sil{ p-il{Aft{.n
Which of the following isomers is more volatile :
o-nitrophenol or p-nifrophenol ?
8. lqqqkWts*'eiq{+'si?rw,'tftir{stflk+ftr}+lq+ 
emqr+oqrsq+rfuqrqmrtt 1
Which reducing agent is employed to get copper from the leached low grade copper
ore ?
g. qruT{frfi 
€rffiq} 
qrd 
fr+* +ftrn ttir€q,r Frqc futi r rts€+trzrq 
sil{ 
ffi +firu {
q1qq6qfrr|2 2
State Raoult's law for the solution containing volatile components. What is the
similarity between Raoult's law and Henry's law ?
10. frq rqt 6t 
qEqT 
dflqa :
(i) +rfuRiq'(k)
(ii) ffi sftlrqrm e*lorm 
1t,,r;
Explain the following terms :
(i) Rate constant 
(k)
(ii) Half life period of a reaction (ty2)
1 1. fiTH fqfrr.it + sflqr$ffi Fr{rq ffi '
(i) tqvffiT{frFr
(ii) a{dsrwer+sffitm
Write the principles of the following methods :
(i) Froth floatation method
(ii) Electrolyticrefining
12. lL.Z gcm-3 
q{fr 
eil{ + x 10-s cm ffi 
qt 
#'or 
gfi 
HFr f.c.c. 
til?rF qqmr 
t | 
{q 
ffir
srv{qqfqtEi6+rHqff$fudfr1k+ t 
2
(Ne 
= 
6.022x 1d3 +fi-t)
An element with density ll.2 gcm-3 forms a f.c.c. lattice with edge length of 4 x 1018 cm.
Calculate the atomic mass of the element.
(Given : No 
= 
6.022 x 1023 mol-1)
s6tu3 3 IP.T.O.
2
Page 4


Series : OSR/I
*I*". 
sotLtl
mr sw-Ew+r s-5q
rR €trq{q flmd r
Candidates must write the Code on
the title page of the answer-book.
+dTi.
Roll No.
!
ET
o 
!ffir 
dm 
qr 
d fo. 
gq 
srt-Et { 
Ekfl Ys 
11 t r
o Irfi-rr { Erf6+ cm *t 
sili fqq'rq +ts:rqr *t om uw-gfir*r *. ge-lg'n fu} I
o gttfidiqq,ri{flo^vs { ro s*rt r
o 
EqrnrlFtur 
rtnftrwtvF^qtr++ 
qd, 
svtqtx,qiu. wqvqft{d t
o 
{tr 
nFr-qrr si 
q6+ 
+ fuq 15 fffie 
i6T 
TFrq f<qFrqr t r 
q{{-q{ 
er fuat"r 
Wi$ 
ti 
to.ts 
qi
flffir 
sTr+rn 
I 10.15 {q t 10.30 
qQ 
aqr on *qe 
qrt-rr qti qt{ 
$r 
srqfu + dlr{ t s+c-
gksTqtot{stnqeTfu},t t
o 
Please check that this question paper contains 11 printed pages.
o 
Code number given on the right hand side of the question paper should be written on the
title page of the answer-book by the candidate.
o 
Please check that this question paper contains 30 questions.
o 
Please write dovm the Serial Number of the question before attempting it.
r 
15 minutes time has been allotted to read this question paper. The question paper will be
distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will only read the
question paper and will not write any answer on the answer-book d,uring this period.
Ttil?rtfT{rtCffi-{o,.)
CHEMISTRY 
(TheorY)
freifti v4z{ : 3 
qr*l 
Tafvaae 
aiq : 70
Timeallowed:3hours 
I 
tMaximumMarks:70
qrqrrrftTtvt:
(i) wfrvw 
erfradt r
(ii) 
yw-(iqrl 
#e rqrerfrerg-rrtfuwa t ry'dqsw#frnrl 
er*-* r
(iii) sw-d@rg I u aaag-$mfqrffi 
g 
1 v-fianw #faqz 
er+-fi I
(iv) 
yw-i@r19 
IZZ aqetldg-v'afunwt ry'de-.s{a #ftn l 
itiqt r
(v) vw-(iqr2s +30 
qH-aw?qvw* 
rrdqvw#frn's 
ar+-ff I
(vi) amwmilTstrEdrT M w sqhT ?'t / *ry*+ #wqtr aT 
erflfd a#t r
s6ty3 
1 [P.T.O.
General Instructions :
(i) All.questions are compulsory.
(ii) 
Question 
numbers I to I are very short-answer questions and carry 7 mark each.
(iii) 
Question 
numbers 9 to 18 are short-answer questions and carry 2 marks each.
(iv) 
Question 
numbers 19 to 27 are also short-answer questions and carry 
j 
marks
each.
(v) 
Question 
numbers 28 to 30 are long-answer questions and carry 5 marks each.
(vi) 
Use Ing Tables, if necessary. Use of calculators is not allowed.
1. re Rft 
qrfi 
eil'r eie riEt {ilH sT 
\r6-qs' Eqr6{ur luri r
Give one example each of lyophobic sol and lyophitc sol.
z. 
q\trocg. 
- 
cH 
- 
cHr- g 
- 
cH,
' 
| 
' 
ll 
---j
oHo
S'I IUPAC;NTT fui I
Write the IUPAC name of the compound.
cHr-cH-cHr-g-CH,
-t-lt
oHo
3. t+{fi sil{t+ciq grq 
ii 
*}a 
qr 
si<R-eT{F 
effids'nq1q fls?flqilt 
*or t r
What type of intermolecular attractive interaction exists in the pair of methanol and
acetone ?
4. FF{ ffi { t 
qfm 
m srftmeTrqt 
E}-dr t 
si{ Fif r
[co(NH3)6]3* 
sk 
[co(en)r]3+
Which of the following is more stable complex and why ?
[Co(NH3)6]3+ 
and 
[Co(en)r]3+
s. 
w 
qltnri 
m] 
q{Rm.{n 
+e6+ mq 
i} 
g{: 
qqflem qfrH 
:
Arrange the following in increasing order of basic strength :
' 
coHsNH? C6H5NHCH3, C6H5N(CH,2
6. q*tm+q*qfrEre{+lin,umd*'qmftri 
I
Name the products of hydrolysis of sucrose.
561U3 
'2
7 . F 
eTE*T{t 
$q-€rflM) 
t t ftt{ sr 
qftroqrsT{flm 
t t
o-qrtifi r{n sil{ p-il{Aft{.n
Which of the following isomers is more volatile :
o-nitrophenol or p-nifrophenol ?
8. lqqqkWts*'eiq{+'si?rw,'tftir{stflk+ftr}+lq+ 
emqr+oqrsq+rfuqrqmrtt 1
Which reducing agent is employed to get copper from the leached low grade copper
ore ?
g. qruT{frfi 
€rffiq} 
qrd 
fr+* +ftrn ttir€q,r Frqc futi r rts€+trzrq 
sil{ 
ffi +firu {
q1qq6qfrr|2 2
State Raoult's law for the solution containing volatile components. What is the
similarity between Raoult's law and Henry's law ?
10. frq rqt 6t 
qEqT 
dflqa :
(i) +rfuRiq'(k)
(ii) ffi sftlrqrm e*lorm 
1t,,r;
Explain the following terms :
(i) Rate constant 
(k)
(ii) Half life period of a reaction (ty2)
1 1. fiTH fqfrr.it + sflqr$ffi Fr{rq ffi '
(i) tqvffiT{frFr
(ii) a{dsrwer+sffitm
Write the principles of the following methods :
(i) Froth floatation method
(ii) Electrolyticrefining
12. lL.Z gcm-3 
q{fr 
eil{ + x 10-s cm ffi 
qt 
#'or 
gfi 
HFr f.c.c. 
til?rF qqmr 
t | 
{q 
ffir
srv{qqfqtEi6+rHqff$fudfr1k+ t 
2
(Ne 
= 
6.022x 1d3 +fi-t)
An element with density ll.2 gcm-3 forms a f.c.c. lattice with edge length of 4 x 1018 cm.
Calculate the atomic mass of the element.
(Given : No 
= 
6.022 x 1023 mol-1)
s6tu3 3 IP.T.O.
2
t3. Tfr 
M.6qer€Tr 
€Fq'i 
fu€O m,r fTfrqlur s"{ 
oTr+ 
Td 
{q wqi +'s.r fui : z
A+ B- A+ B- A+
B_OB-A+B-
A+B-A+0A+
B- A+ B- A+ B-
(0 yqfrRmarrftt{qtqm 
olrflrs-Cfiq*,ftfut *sf{ffq 
qrdrt 
z
(ii) 
gs qlq 
*'orqq fm.€cT * 
qqrq qr 
fuq ffFff uqrq 
qr,{ 
t 
'l
(iii) fuq IrsR+' erffi*.*4 
t$ 
qiq 
M t r
Examine the given defective crystal
A+ B- A+ B- A+
B_OB-A+B_
A+B-A+0A+
B- A+ B_ A+ B-
Answer the following questions :
(i) What type of stoichiometric defect is shown by the crystal ?
(ii) How is the density of the crystal affected by this defect ?
(iii) What type of ionic substances show sueh clefecr 
')
14. 
qfrfifird 
slFr+ fu' enqq 
qqrTr{ 
= 
256 g 
qtfl*l 
6 ffiq; s1 fu-f,,a} 
r{"ffir 
s} ?5 g S{q 
q
dfir 
qr+ 
fuYs+'ffi'-rif o.+a K 
q+ 
sq] dr 
i{ri' 
t 
(& 
= 
s.12 K kg 
riiir't). 
2
Calculate the mass of compound (molar mass 
= 
256 g inol' 
1) 
ro be dissolved in 75 g of
benzene to lower its freezing point by 0.48 K (Kr 
= 
5.12 K kg mol-l).
15. (0 fta gu t st{ RT 
Qflffii{ tdrrsistcT } 
sfu orfrr*. da s*z 
.3{ft{f*,-+r 
*ar * r z
NA
Brl
Br
(a) (b)
(ii) frrr fistrlif 
ii 
s*t etc 
s*z 
it 
t ft)a* 
,B{F{f*ilT 
** r
(a) fuqrs 
EFt 
Ber+tr (inversion)
(b) tfisqlErtur(Racemisation)
(i) Which alkyl halide from the following pair is ohiral and undergoes faster S*2
reaction ?
nn \n
Br 
L.
(a) (b)
(ii) Out of S*1 and S*2, which reaction occurs wirh
(a) 
Inversion of configuration
(b) 
Racemisation
s6lu3
Page 5


Series : OSR/I
*I*". 
sotLtl
mr sw-Ew+r s-5q
rR €trq{q flmd r
Candidates must write the Code on
the title page of the answer-book.
+dTi.
Roll No.
!
ET
o 
!ffir 
dm 
qr 
d fo. 
gq 
srt-Et { 
Ekfl Ys 
11 t r
o Irfi-rr { Erf6+ cm *t 
sili fqq'rq +ts:rqr *t om uw-gfir*r *. ge-lg'n fu} I
o gttfidiqq,ri{flo^vs { ro s*rt r
o 
EqrnrlFtur 
rtnftrwtvF^qtr++ 
qd, 
svtqtx,qiu. wqvqft{d t
o 
{tr 
nFr-qrr si 
q6+ 
+ fuq 15 fffie 
i6T 
TFrq f<qFrqr t r 
q{{-q{ 
er fuat"r 
Wi$ 
ti 
to.ts 
qi
flffir 
sTr+rn 
I 10.15 {q t 10.30 
qQ 
aqr on *qe 
qrt-rr qti qt{ 
$r 
srqfu + dlr{ t s+c-
gksTqtot{stnqeTfu},t t
o 
Please check that this question paper contains 11 printed pages.
o 
Code number given on the right hand side of the question paper should be written on the
title page of the answer-book by the candidate.
o 
Please check that this question paper contains 30 questions.
o 
Please write dovm the Serial Number of the question before attempting it.
r 
15 minutes time has been allotted to read this question paper. The question paper will be
distributed at 10.15 a.m. From 10.15 a.m. to 10.30 a.m., the students will only read the
question paper and will not write any answer on the answer-book d,uring this period.
Ttil?rtfT{rtCffi-{o,.)
CHEMISTRY 
(TheorY)
freifti v4z{ : 3 
qr*l 
Tafvaae 
aiq : 70
Timeallowed:3hours 
I 
tMaximumMarks:70
qrqrrrftTtvt:
(i) wfrvw 
erfradt r
(ii) 
yw-(iqrl 
#e rqrerfrerg-rrtfuwa t ry'dqsw#frnrl 
er*-* r
(iii) sw-d@rg I u aaag-$mfqrffi 
g 
1 v-fianw #faqz 
er+-fi I
(iv) 
yw-i@r19 
IZZ aqetldg-v'afunwt ry'de-.s{a #ftn l 
itiqt r
(v) vw-(iqr2s +30 
qH-aw?qvw* 
rrdqvw#frn's 
ar+-ff I
(vi) amwmilTstrEdrT M w sqhT ?'t / *ry*+ #wqtr aT 
erflfd a#t r
s6ty3 
1 [P.T.O.
General Instructions :
(i) All.questions are compulsory.
(ii) 
Question 
numbers I to I are very short-answer questions and carry 7 mark each.
(iii) 
Question 
numbers 9 to 18 are short-answer questions and carry 2 marks each.
(iv) 
Question 
numbers 19 to 27 are also short-answer questions and carry 
j 
marks
each.
(v) 
Question 
numbers 28 to 30 are long-answer questions and carry 5 marks each.
(vi) 
Use Ing Tables, if necessary. Use of calculators is not allowed.
1. re Rft 
qrfi 
eil'r eie riEt {ilH sT 
\r6-qs' Eqr6{ur luri r
Give one example each of lyophobic sol and lyophitc sol.
z. 
q\trocg. 
- 
cH 
- 
cHr- g 
- 
cH,
' 
| 
' 
ll 
---j
oHo
S'I IUPAC;NTT fui I
Write the IUPAC name of the compound.
cHr-cH-cHr-g-CH,
-t-lt
oHo
3. t+{fi sil{t+ciq grq 
ii 
*}a 
qr 
si<R-eT{F 
effids'nq1q fls?flqilt 
*or t r
What type of intermolecular attractive interaction exists in the pair of methanol and
acetone ?
4. FF{ ffi { t 
qfm 
m srftmeTrqt 
E}-dr t 
si{ Fif r
[co(NH3)6]3* 
sk 
[co(en)r]3+
Which of the following is more stable complex and why ?
[Co(NH3)6]3+ 
and 
[Co(en)r]3+
s. 
w 
qltnri 
m] 
q{Rm.{n 
+e6+ mq 
i} 
g{: 
qqflem qfrH 
:
Arrange the following in increasing order of basic strength :
' 
coHsNH? C6H5NHCH3, C6H5N(CH,2
6. q*tm+q*qfrEre{+lin,umd*'qmftri 
I
Name the products of hydrolysis of sucrose.
561U3 
'2
7 . F 
eTE*T{t 
$q-€rflM) 
t t ftt{ sr 
qftroqrsT{flm 
t t
o-qrtifi r{n sil{ p-il{Aft{.n
Which of the following isomers is more volatile :
o-nitrophenol or p-nifrophenol ?
8. lqqqkWts*'eiq{+'si?rw,'tftir{stflk+ftr}+lq+ 
emqr+oqrsq+rfuqrqmrtt 1
Which reducing agent is employed to get copper from the leached low grade copper
ore ?
g. qruT{frfi 
€rffiq} 
qrd 
fr+* +ftrn ttir€q,r Frqc futi r rts€+trzrq 
sil{ 
ffi +firu {
q1qq6qfrr|2 2
State Raoult's law for the solution containing volatile components. What is the
similarity between Raoult's law and Henry's law ?
10. frq rqt 6t 
qEqT 
dflqa :
(i) +rfuRiq'(k)
(ii) ffi sftlrqrm e*lorm 
1t,,r;
Explain the following terms :
(i) Rate constant 
(k)
(ii) Half life period of a reaction (ty2)
1 1. fiTH fqfrr.it + sflqr$ffi Fr{rq ffi '
(i) tqvffiT{frFr
(ii) a{dsrwer+sffitm
Write the principles of the following methods :
(i) Froth floatation method
(ii) Electrolyticrefining
12. lL.Z gcm-3 
q{fr 
eil{ + x 10-s cm ffi 
qt 
#'or 
gfi 
HFr f.c.c. 
til?rF qqmr 
t | 
{q 
ffir
srv{qqfqtEi6+rHqff$fudfr1k+ t 
2
(Ne 
= 
6.022x 1d3 +fi-t)
An element with density ll.2 gcm-3 forms a f.c.c. lattice with edge length of 4 x 1018 cm.
Calculate the atomic mass of the element.
(Given : No 
= 
6.022 x 1023 mol-1)
s6tu3 3 IP.T.O.
2
t3. Tfr 
M.6qer€Tr 
€Fq'i 
fu€O m,r fTfrqlur s"{ 
oTr+ 
Td 
{q wqi +'s.r fui : z
A+ B- A+ B- A+
B_OB-A+B-
A+B-A+0A+
B- A+ B- A+ B-
(0 yqfrRmarrftt{qtqm 
olrflrs-Cfiq*,ftfut *sf{ffq 
qrdrt 
z
(ii) 
gs qlq 
*'orqq fm.€cT * 
qqrq qr 
fuq ffFff uqrq 
qr,{ 
t 
'l
(iii) fuq IrsR+' erffi*.*4 
t$ 
qiq 
M t r
Examine the given defective crystal
A+ B- A+ B- A+
B_OB-A+B_
A+B-A+0A+
B- A+ B_ A+ B-
Answer the following questions :
(i) What type of stoichiometric defect is shown by the crystal ?
(ii) How is the density of the crystal affected by this defect ?
(iii) What type of ionic substances show sueh clefecr 
')
14. 
qfrfifird 
slFr+ fu' enqq 
qqrTr{ 
= 
256 g 
qtfl*l 
6 ffiq; s1 fu-f,,a} 
r{"ffir 
s} ?5 g S{q 
q
dfir 
qr+ 
fuYs+'ffi'-rif o.+a K 
q+ 
sq] dr 
i{ri' 
t 
(& 
= 
s.12 K kg 
riiir't). 
2
Calculate the mass of compound (molar mass 
= 
256 g inol' 
1) 
ro be dissolved in 75 g of
benzene to lower its freezing point by 0.48 K (Kr 
= 
5.12 K kg mol-l).
15. (0 fta gu t st{ RT 
Qflffii{ tdrrsistcT } 
sfu orfrr*. da s*z 
.3{ft{f*,-+r 
*ar * r z
NA
Brl
Br
(a) (b)
(ii) frrr fistrlif 
ii 
s*t etc 
s*z 
it 
t ft)a* 
,B{F{f*ilT 
** r
(a) fuqrs 
EFt 
Ber+tr (inversion)
(b) tfisqlErtur(Racemisation)
(i) Which alkyl halide from the following pair is ohiral and undergoes faster S*2
reaction ?
nn \n
Br 
L.
(a) (b)
(ii) Out of S*1 and S*2, which reaction occurs wirh
(a) 
Inversion of configuration
(b) 
Racemisation
s6lu3
16. lql{ 
it 
t r&" €{iiifuqr 
tt 
qg ffi}ni 
yffiq 
*t {cqqT M :
(i) 
O-oHffi*
(ii) 
O- 
cHz-cH:cH2+HBr 
q{ffi'
Draw the structure of major monohalo product in each of the following reactions :
,/-- 
-\. 
sOc/,
(1) 
L-foH -----:+
,,,.T. Peroxide
(ii) 
tlcHz-" 
cH = cH' 
+ 
113t 
-*
17 . 
gq 
{r€rqt+rqqMi +} 
qn qii 
,
(i) CarP, + HrO 
-+
(ii) Cu + HrSoa(utq +
otstulT
frr{q)tr"Hqd +t $r*"qg t+dW 
}r{ffi ryqlem61H'
(i) HF, HC/" Hnr 
ailrHt "- EG,e gf 
'ar6+1ffi-fi +ffi 
or{qrc
(ii) HzO, H,S. HrSe 
+it. H, [e - ea$ 
6$ 
orim ffiqdT 
or{qr
Complete the fcrllowing chemical equations :
(il Ca.P, + HrO-*>
(ii) Cu + FlrS0o(conc.) 
.-+
OR
Arrange the f'ollowing in the order of property indicated against each set :
(i) HF, I{Cl, HBr" }{I - increasing hond dissociation enthalpy.
(ii) HrO. H?S" H,Se, HrTe 
- 
rncreasing acidic character.
1g. Eio-r 
tcr(trtH3)4eri2l+ 
-fl 
IUPACT 
;ils 
ftad i 
q6"fs"s 
rdrrt *t {Fllttzltrff (isomerism) 
B-*"
t: 
2
Write the IUPAC nanre of the complex 
[Cr(NHr)oCl21+. 
What type of isomerism does
it exhibit ?
tg. (a) ftra efiihaT +1sI{BeT Id 
' 
3
cH-rcH20g 
.B-9! 
tlH..cHrBr + Hro
(b) trn:*lrq 
31ffisql + fttd u*m-qor ftrci t
(a) Write the mechanisrn of the following reaction :
cH3cH2oH 
*lJEt* 
cHrel{rBr + Hro
(b) Write the equation involved in Reimer-Tiemann reaction.
s6nt3 
s [P.T.O.