Karnataka 2nd PUC Quarterly Exam Question Paper 2026 Chemistry

FOR KARNATAKA 2ND PUC QUARTERLY EXAM EXAM PREPARATION

Karnataka 2nd PUC
Quarterly Exam 2026
Question Paper ·
Chemistry
EXAM YEAR TYPE

Karnataka 2nd PUC Quarterly Exam 2026 Question Paper
SUBJECT

Chemistry

Notes · Sample Papers · Previous Year Papers · Mock Tests

.
m.co s e m
se l a
F I R S T Q U A R T E R L Y T E S T A U GgU S T 2 02 6
a
C L A S S : I I PU C S U B J E C T : C H E M I S T R Y ( 3 4)
T im e : 1 H r . 3 0 M in s . M ax . M ar k s : 35
PA R T - A
S e l e c t t h e c o r r e c t o p t io n f r o m t h e g ive n c h o ic e s . 7 x 1= 7
1) T h e m a s s p e r c e n t a g e ( w / w ) o f g l uc o s e in wa t e r is 1 0% m e a n s
a ) 10 g o f g l uc o s e d is s o l ve d in 100 g o f wa t e r
b ) 10 g o f g l uc o s e d is s o l ve d in 10 g o f wa t e r m
c ) 1 0g o f g l uc o s e d isms o l ve d in 9 0 g o f wa t e r . co
d ) 10 g o f g l uc o.sce od is s o l ve d in 9 0 m l o f wa t e r e m
2) V a n t H o f f a cm
e t o r ( ) f o r t h e c o m p l e t e d is s o c ia t io n o f K , S O , is
l as
a ) 0. 5
a s b) 1 c) 2 d) 3 g
3) I n a sgo llut io n c o n t a in in g n o n - vo lat ile s ol ut e , t h e m o l e f r a c t io n o f t h e s o l ve n t is 0.7 . T h e r e laa t ive
l o wear in g o f v a p o u r p r e s s ur e is
a ) 0. 7 b ) 1. 3 c ) 1. 7 d ) 0. 3
4) S t a t e m e n t I : E n a n t io m e r s a r e n o n - s up e r im p o s a b l e m ir r o r im a g e s o n e a c h o t h e r .
S t a t e m e n t I I :A r a c e m ic m ix t ur e s h o w s z e r o o p t ic a l r o t a t io n .
a) B ot h St at e m e n t I & I I ar e c or r ec t
b ) B o t h S t a t e m e n t I & I I a r e in c o r r e c t
c ) S t a t e m e n t I is c o r r e c t b ut S t a t e m e n t I l is in c o r r e c t
d ) S t a t e m e n t I is in c o r r e c t b ut S t a t e m e n t I I is c o r r e c t
5) I n t h e wa c k e r p r o c e s s t h e o x id a t io n o f e t h yn e t o eot hm
a n o l is c a t a l ys e d b y
a ) V , 0, b ) Pd C l , c
. Br
c ) A g d) N i
6) M a t c h it e m s o f L is t - I a n d L is t I I e m
L is t - I s
L is t - I
A ) G e m - d ih a l id e
aI
( i) g3 -lB r o m o p r o p a n e
B ) V ic - d ih a l id e a Ch lor oet h an e
(ii)
C ) V in yl ic h a l id e ( iü ) 1, 2 - d ic h l o r o e t h a n e
D ) A l l yl ic h a l id e ( iv) 1, 1 - d ic h l o r o e t h a n e
a ) A - iv, B - ii, C - i, D - ii b ) A - iv, B - ii, C - ii, D - i
c ) A - ii, B - ii, C - iv, D - i d ) A - i, B - i, C - ii, D - iv
7) A c t in o id s s h o w a c o m m o n o x id a t io n s t a t e o f
a) + 2 b) + 3 c) + 6 d) + 7

F il l in t h e b l a n k s b y c h o o s in g t h e a p p r o p r ia t e w o r d f r o m t h o s e g ive n in t h e m
b r ac ket s :
om( S h r in k , m o r e , l e s s , C H C I , ) . co 3 x 1 = 3
. c e m
e m T h e m e l t in g p o in t o f in t e r s t it ia l c o m p o u n d is las
t h a n t h e p ur e m e t a l .
s 8)
g
gla 9) W h e n R B C is p l a c e d in 2 % N a C l s o l ut io n , t h e c e l l wa l l
10) D ur in g s ur g e r y wa s us e d a s a n e s t h e s ia .
a
PA R T - B
1 A n s we r a n y T H R E E o f t h e f o l l o win g q ue s t io n s . E a c h q ue s t io n c a r r ie s 2 m a r k s .
3 x 2- 6
11) E x p l a in S wa r t z r e a c t io n wit h a n e x a m p l e .
12) C h l o r o f o r m is s t o r e d in c l o s e d d a r k b o t t l e s . W h y ?
13 ) S t a t e H e n r y' s l a w.
m
m .co ( P. T O . ) s e m
se
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-2
14) C a l c ul a t e t h e s p in o n l y m a g n e t ic m o m n e n t o f a d iva l e n t c a t io n in a q ue o us s o l ut io n o f it s a t o m ic
n u m b e r is 25 .
15 ) W h a t is L a n t h a n o id c o n t r a c t io n ? M e n t io n a n y o n e c o n s e q ue n c e o f L a n t h a n o id c o n t r a c t io n .
PA R T - C
I V A n s we r a n y O N E o f t h e f o l l o win g q ue s t io n s . E a c h q ue s t io n c a r r ie s 3 m a r k s . 1x 3 = 3

16 ) G ive t h e e q ua t ion s in vol ve d in pr e pa r a t ion o f K, Cr , 0, f io m c h r o m it e or e. ( 2)
17 ) ( a ) W h y d o t h e t r a n s it io n e l e m e n t s e x h ib it h ig h e r e n t h a l pie s o f a t o m is a t io n ?
( b ) S c io n is c o l o ur l e s s . G ive r e a s o n . ( 1)
V
A n s w e r a n y O N E o f t h e f o l l o win g q ue s t io n s . E a c h q ue s t io n c a r r ie s 3 m a r k s . 1x 3 = 3
18) a ) G ive t wo d if e r e n c e s b e t we e n I d e a l a n d n o n - id e a l s o l ut io n s . ( 2)
b ) G ive o n e a p p l ic a t io n o f r e ve r s e o s m o s is . ( 1)
19 ) a ) W h a t a r e A z e o t r o p e s ? G ive a n e x a m p l e f o r m a x im u m b o il in g a ze o t r o p e . ( 2)
( 1)
b ) N a m e a C o l l ig a t ive pr o pe r t y.
PA R T - D
A n s w e r a n y T W O q ue s t io n s f r o m t h e f o l l o win g . E a c h q ue s t io n c a r r ie s 5 m a r k s2.x 5 - 1 0
VI

t h a n H a l o a l k a n e s . ( 2)
20) a ) W h y H a l o a r e n e s a r e l e s s r e a c t ive t o n uc l e o ph il ic s ub s t it ut io n r e a c t io n
b ) E x p l a in F r ie d e l - C r a f t s a l k yl a t io n o f c h l o r o b e n z e n e a n d a l s 0 n a m e t h e m a j o r p r o d uc t f o r m e d
in t h e r e a c t io n . (3)
21) a ) G ive t h e m a j o r p r o d uc t f o r m e d in t h e f o l l o win g r e a c t io n s .
i) C H , C H , B r + K C N a q . E t h a n o l
i) C H , - C H , - C H = C H , + H B r Pe r o x id e
ii) C H , - C H , - C H , 0O H + S O C I ,
Pyr id in e (3)
b ) W h a t a r e d e x t r o r o t a t o r y c o m p o un d s ? G ive a n e x a m p l e . ( 2)
22) a ) W r it e S , 1 m e c h a n is m f o r t h e c o n ve r s io n o f 2- B r o m o - 2- m e t h yl p r o p a n e t o
2- m e t h yl pr o pa n - 2- o l a n d a l s o wr it e t h e o r d e r o f t h e r e a c t io n . (3)
b ) C o m p l e t e t h e r e a c t io n a n d n a m e t h e r e a c t io n
dr y eth er +2N a C I ( 2)
+2 Na

PA R T - E
[ N um e r ic a l Pr o b l e m s )
q ue s t io n c a r r ie s 3 m a r k s .
V I I A n s w e r a n y O N E q ue s t io n s f r o m t h e f o l l o win g . E a c h lx 3=3
m m of H g r e s pe c t ive l y a t 350 K
23 ) T h e va p o ur p r e s s ur e o f p ur e l iq uid A & B a r e if45t o0t a &l va7 00 p o ur pr e s s ur e is 6 00 m m H o
F in d o ut t h e c o m p o s it io n o f t h e l iq uid m ix t ur e
t h e f r e e zin g D o in t h y
24) 1. 00 g o f a n o n - e l e c t r o l yt e s o l ut e d is s o l ve d in 5 0g of b e n ze n e l o we r e d
K k g m o l . F in d t h e m a l a r
0. 40K . T h e f r e e zin g po in t d e pr e s s io n c o n s t a n t o f b e n ze n e is 5 . 12
m a s s o f s o l ut e . *****

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