Class 9 Exam  >  Class 9 Notes  >  CBSE Sample Paper - 2, Science, Class 9

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1 	 / 	 3
C B S E 	 C l a s s 	 9 	 - 	 S c i e n c e
S a m p l e 	 P a p e r -
G e n e r a l 	 I n s t r u c t i o n s :
i . 	 T h e 	 q u e s t i o n 	 p a p e r 	 c o m p r i s e s 	 o f 	 t h r e e 	 S e c t i o n s 	 A , 	 B 	 a n d 	 C . 	 Y o u 	 a r e 	 t o 	 a t t e m p t 	 a l l 	 t h e
s e c t i o n s .
i i . 	 A l l 	 q u e s t i o n s 	 a r e 	 c o m p u l s o r y .
i i i . 	 T h e r e 	 i s 	 n o 	 c h o i c e 	 i n 	 a n y 	 o f 	 t h e 	 q u e s t i o n s .
i v . 	 A l l 	 q u e s t i o n s 	 o f 	 S e c t i o n 	 A , 	 S e c t i o n 	 B 	 a r e 	 t o 	 b e 	 a t t e m p t e d 	 s e p a r a t e l y .
v . 	 Q u e s t i o n 	 n u m b e r s 	 1 	 t o 	 2 	 i n 	 S e c t i o n 	 A 	 a r e 	 o n e 	 m a r k 	 q u e s t i o n s . 	 T h e s e 	 a r e 	 t o 	 b e 	 a n s w e r e d
i n 	 o n e 	 w o r d 	 o r 	 i n 	 o n e 	 s e n t e n c e .
v i . 	 Q u e s t i o n 	 n u m b e r s 	 3 	 a n d 	 5 	 i n 	 S e c t i o n 	 A 	 a r e 	 t w o 	 m a r k s 	 q u e s t i o n s . 	 T h e s e 	 a r e 	 t o 	 b e
a n s w e r e d 	 i n 	 a b o u t 	 3 0 	 w o r d s 	 e a c h .
v i i . 	 Q u e s t i o n 	 n u m b e r s 	 6 	 t o 	 1 5 	 i n 	 S e c t i o n 	 A 	 a r e 	 t h r e e 	 m a r k s 	 q u e s t i o n s . 	 T h e s e 	 a r e 	 t o 	 b e
a n s w e r e d 	 i n 	 a b o u t 	 5 0 	 w o r d s 	 e a c h .
v i i i . 	 Q u e s t i o n 	 n u m b e r s 	 1 6 	 t o 	 2 1 	 i n 	 S e c t i o n 	 A 	 a r e 	 f v e 	 m a r k s 	 q u e s t i o n s . 	 T h e s e 	 a r e 	 t o 	 b e
a n s w e r e d 	 i n 	 a b o u t 	 7 0 	 w o r d s 	 e a c h .
i x . 	 Q u e s t i o n 	 n u m b e r s 	 2 2 	 t o 	 2 7 	 i n 	 S e c t i o n 	 B 	 a r e 	 t w o 	 m a r k s 	 q u e s t i o n s 	 b a s e d 	 o n 	 p r a c t i c a l 	 s k i l l s .
T h e s e 	 a r e 	 t o 	 b e 	 a n s w e r s 	 i n 	 a b o u t 	 3 0 	 w o r d s 	 e a c h .
S e c t i o n 	 ' A '
1 . 	 W h a t 	 a r e 	 L i c h e n s ?
2 . 	 W h i c h 	 p a r t 	 o f 	 t h e 	 p l a n t 	 c e l l 	 p e r m i t s 	 i t 	 t o 	 w i t h s t a n d 	 v e r y 	 d i l u t e 	 e x t e r n a l 	 m e d i u m 	 w i t h o u t
b u r s t i n g ?
3 . 	 A 	 l a m p 	 c o n s u m e r s 	 1 0 0 0 	 J 	 o f 	 e l e c t r i c a l 	 e n e r g y 	 i n 	 2 0 	 s e c o n d s . 	 w h a t 	 i t 	 i t s 	 p o w e r ?
4 . 	 D e f i n e :
i . 	 F l u i d , 	 i i . 	 B u o y a n t 	 f o r c e
5 . 	 W h a t 	 i s 	 G r e e n 	 H o u s e 	 E f f e c t .
6 . 	 I n 	 e l e m e n t s 	 i s 	 r e p r e s e n t e d 	 a s 	 . 	 F i n d
a . 	 T h e 	 n u m b e r 	 o f 	 e l e c t r o n s 	 i n 	 e l e m e n t 	 X .
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1 	 / 	 3
C B S E 	 C l a s s 	 9 	 - 	 S c i e n c e
S a m p l e 	 P a p e r -
G e n e r a l 	 I n s t r u c t i o n s :
i . 	 T h e 	 q u e s t i o n 	 p a p e r 	 c o m p r i s e s 	 o f 	 t h r e e 	 S e c t i o n s 	 A , 	 B 	 a n d 	 C . 	 Y o u 	 a r e 	 t o 	 a t t e m p t 	 a l l 	 t h e
s e c t i o n s .
i i . 	 A l l 	 q u e s t i o n s 	 a r e 	 c o m p u l s o r y .
i i i . 	 T h e r e 	 i s 	 n o 	 c h o i c e 	 i n 	 a n y 	 o f 	 t h e 	 q u e s t i o n s .
i v . 	 A l l 	 q u e s t i o n s 	 o f 	 S e c t i o n 	 A , 	 S e c t i o n 	 B 	 a r e 	 t o 	 b e 	 a t t e m p t e d 	 s e p a r a t e l y .
v . 	 Q u e s t i o n 	 n u m b e r s 	 1 	 t o 	 2 	 i n 	 S e c t i o n 	 A 	 a r e 	 o n e 	 m a r k 	 q u e s t i o n s . 	 T h e s e 	 a r e 	 t o 	 b e 	 a n s w e r e d
i n 	 o n e 	 w o r d 	 o r 	 i n 	 o n e 	 s e n t e n c e .
v i . 	 Q u e s t i o n 	 n u m b e r s 	 3 	 a n d 	 5 	 i n 	 S e c t i o n 	 A 	 a r e 	 t w o 	 m a r k s 	 q u e s t i o n s . 	 T h e s e 	 a r e 	 t o 	 b e
a n s w e r e d 	 i n 	 a b o u t 	 3 0 	 w o r d s 	 e a c h .
v i i . 	 Q u e s t i o n 	 n u m b e r s 	 6 	 t o 	 1 5 	 i n 	 S e c t i o n 	 A 	 a r e 	 t h r e e 	 m a r k s 	 q u e s t i o n s . 	 T h e s e 	 a r e 	 t o 	 b e
a n s w e r e d 	 i n 	 a b o u t 	 5 0 	 w o r d s 	 e a c h .
v i i i . 	 Q u e s t i o n 	 n u m b e r s 	 1 6 	 t o 	 2 1 	 i n 	 S e c t i o n 	 A 	 a r e 	 f v e 	 m a r k s 	 q u e s t i o n s . 	 T h e s e 	 a r e 	 t o 	 b e
a n s w e r e d 	 i n 	 a b o u t 	 7 0 	 w o r d s 	 e a c h .
i x . 	 Q u e s t i o n 	 n u m b e r s 	 2 2 	 t o 	 2 7 	 i n 	 S e c t i o n 	 B 	 a r e 	 t w o 	 m a r k s 	 q u e s t i o n s 	 b a s e d 	 o n 	 p r a c t i c a l 	 s k i l l s .
T h e s e 	 a r e 	 t o 	 b e 	 a n s w e r s 	 i n 	 a b o u t 	 3 0 	 w o r d s 	 e a c h .
S e c t i o n 	 ' A '
1 . 	 W h a t 	 a r e 	 L i c h e n s ?
2 . 	 W h i c h 	 p a r t 	 o f 	 t h e 	 p l a n t 	 c e l l 	 p e r m i t s 	 i t 	 t o 	 w i t h s t a n d 	 v e r y 	 d i l u t e 	 e x t e r n a l 	 m e d i u m 	 w i t h o u t
b u r s t i n g ?
3 . 	 A 	 l a m p 	 c o n s u m e r s 	 1 0 0 0 	 J 	 o f 	 e l e c t r i c a l 	 e n e r g y 	 i n 	 2 0 	 s e c o n d s . 	 w h a t 	 i t 	 i t s 	 p o w e r ?
4 . 	 D e f i n e :
i . 	 F l u i d , 	 i i . 	 B u o y a n t 	 f o r c e
5 . 	 W h a t 	 i s 	 G r e e n 	 H o u s e 	 E f f e c t .
6 . 	 I n 	 e l e m e n t s 	 i s 	 r e p r e s e n t e d 	 a s 	 . 	 F i n d
a . 	 T h e 	 n u m b e r 	 o f 	 e l e c t r o n s 	 i n 	 e l e m e n t 	 X .
2 	 / 	 3
b . 	 M a s s 	 n u m b e r 	 o f 	 t h e 	 e l e m e n t 	 X .
c . 	 T h e 	 N u m b e r 	 o f 	 n e u t r o n s 	 i n 	 e l e m e n t 	 X .
7 . 	 G i v e 	 t w o 	 e x a m p l e 	 e a c h 	 o f 	 o r g a n i s m 	 b e l o n g i n g 	 t h e 	 f o l l o w i n g 	 p h y l u m s :
a . 	 A r t h r o p o d a
b . 	 M o l l u s c a
c . 	 P r o t o c h o r d a t a
8 . 	 D e r i v e 	 g r a p h i c a l l y 	 t h e 	 e q u a t i o n 	 f o r 	 p o s i t i o n 	 t i m e 	 r e l a t i o n 	 f o r 	 a n 	 o b j e c t 	 t r a v e l i n g 	 a
d i s t a n c e 	 ' s ' 	 i n 	 t i m e 	 ' t ' 	 u n d e r 	 u n i f o r m 	 a c c e l e r a t i o n .
9 . 	 L i s t 	 a n y 	 t h r e e 	 p r o p e r t i e s 	 t h e 	 b a s i c 	 o f 	 w h i c h 	 a 	 c o l l o i d a l 	 s o l u t i o n 	 c a n 	 b e 	 r e c o g n i z e d .
1 0 . 	 A n 	 e l e m e n t 	 c a n 	 h a v e 	 a t o m s 	 w i t h 	 d i f f e r e n t 	 m a s s 	 n u m b e r s 	 b u t 	 s a m e 	 c h e m i c a l 	 p r o p e r t i e s
a n d 	 s o m e 	 a r e 	 a l s o 	 u s e d 	 i n 	 t h e 	 f i e l d 	 o f 	 m e d i c i n e 	 i n 	 t h e 	 t r e a t m e n t 	 o f 	 d i s e a s e s ?
i . 	 W h a t 	 a r e 	 s u c h 	 e l e m e n t 	 k n o w n 	 a s ?
i i . 	 D e f i n e 	 s u c h 	 e l e m e n t 	 a n d 	 a l s o 	 w r i t e 	 o n e 	 e x a m p l e s .
i i i . 	 W h i c h 	 p r o p e r t i e s 	 a r e 	 d i f f e r e n t 	 i n 	 t h e m ?
1 1 . 	 A 	 m a n 	 h a s 	 a n 	 a u d i b l e 	 r a n g e 	 f r o m 	 2 0 	 H z 	 t o 	 2 0 	 K H z . 	 W h a t 	 a r e 	 t h e 	 w a v e l e n g t h s 	 o f 	 s o u n d 	 i n
c o r r e s p o n d i n g 	 t o 	 t h e s e 	 t w o 	 f r e q u e n c i e s ? 	 ( S p e e d 	 s o u n d 	 i n 	 a i r 	 i s 	 3 4 4 	 m / s )
1 2 . 	 N a m e 	 t h e 	 f o l l o w i n g 	 a n d 	 g i v e 	 o n e 	 c h a r a c t e r i s t i c 	 o f 	 e a c h . 	 T h e 	 w a x y 	 s u b s t a n c e s 	 c o a t i n g 	 t h e
e p i d e r m i s 	 i n 	 d e s e r t 	 p l a n t s , 	 s u i c i d a l 	 b a g s 	 o f 	 t h e 	 c e l l s .
F a t 	 s t r o n g 	 c e l l s 	 b e l o w 	 t h e 	 s k i n 	 a n d 	 b e t w e e n 	 i n t e r n a l 	 o r g a n s .
1 3 . 	 W h a t 	 a r e 	 p h a n e r o g a m s ? 	 N a m e 	 i t s 	 t w o 	 g r o u p s 	 a n d 	 w r i t e 	 o n e 	 d i f f e r e n c e .
1 4 . 	 D r a w 	 a 	 w e l l 	 l a b e l e d 	 d i a g r a m 	 o f 	 c a r b o n 	 c y c l e .
1 5 . 	 R a v i 	 i s 	 a 	 p o o r 	 l a b o u r e r . 	 f o r 	 l a s t 	 f e w 	 d a y s 	 h e 	 u s e d 	 t o 	 f e e l 	 p a i n , 	 i n 	 h i s 	 l o w e r 	 a b d o m e n 	 a s
w e l l 	 a s 	 i n 	 h i s 	 b a c k . 	 W h e n 	 h e 	 w e n t 	 t o 	 a 	 d o c t o r . 	 t h e 	 d o c t o r 	 p r e s c r i b e d 	 s o m e 	 t e s t s 	 a s 	 w e l l 	 a s
u l t r a s o n o g r a p h y 	 o f 	 l o w e r 	 a b d o m e n . 	 W h e n 	 R i t a 	 w h o 	 l i v e d 	 n e a r b y 	 c a m e 	 t o 	 k n o w 	 o f 	 t h i s ,
S h e 	 d e c i d e d 	 t o 	 g i v e 	 f i n a n c i a l 	 h e l p 	 t o 	 R a v i , 	 a f t e r 	 t e s t s 	 a n d 	 u l t r a s o u n d 	 i t 	 w a s 	 f o u n d 	 t h a t
t h e r e 	 w a s 	 a 	 s t o n e 	 i n 	 t h e 	 l e f t 	 k i d n e y 	 o f 	 R a v i . 	 R i t a 	 a s k e d 	 h e r 	 n e i g h b o u r s 	 t o 	 c o n t r i b u t e 	 f o r
t h e 	 o p e r a t i o n . 	 A l l 	 n e i g h b o u r s 	 c o n t r i b u t e d 	 f o r 	 t h e 	 o p e r a t i o n 	 a s 	 w e l l 	 a s 	 s u b s e q u e n t
m e d i c a l 	 e x p e n s e s . 	 N o w 	 R a v i 	 i s 	 a b s o l u t e l y 	 f i t .
W h a t 	 i s 	 u l t r a s o u n d ? 	 E x p l a i n 	 i t s 	 w o r k i n g 	 p r i n c i p l e . 	 W h a t 	 v a l u e s 	 a r e 	 S h o w n 	 b y 	 R i t a 	 a n d
h e r 	 n e i g h b o u r s ?
1 6 . 	 i . 	 H e l i u m 	 a t o m 	 h a s 	 a n 	 a t o m i c 	 m a s s 	 o f 	 	 a n d 	 t w o 	 p r o t o n s 	 i n 	 t o 	 n u c l e u s . 	 H o w 	 m a n y
n e u t r o n s 	 d o e s 	 i t 	 h a v e ?
i i . 	 W r i t e 	 d o w n 	 t h e 	 e l e c t r o n i c 	 c o n f i g u r a t i o n 	 o f 	 o x y g e n .
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1 	 / 	 3
C B S E 	 C l a s s 	 9 	 - 	 S c i e n c e
S a m p l e 	 P a p e r -
G e n e r a l 	 I n s t r u c t i o n s :
i . 	 T h e 	 q u e s t i o n 	 p a p e r 	 c o m p r i s e s 	 o f 	 t h r e e 	 S e c t i o n s 	 A , 	 B 	 a n d 	 C . 	 Y o u 	 a r e 	 t o 	 a t t e m p t 	 a l l 	 t h e
s e c t i o n s .
i i . 	 A l l 	 q u e s t i o n s 	 a r e 	 c o m p u l s o r y .
i i i . 	 T h e r e 	 i s 	 n o 	 c h o i c e 	 i n 	 a n y 	 o f 	 t h e 	 q u e s t i o n s .
i v . 	 A l l 	 q u e s t i o n s 	 o f 	 S e c t i o n 	 A , 	 S e c t i o n 	 B 	 a r e 	 t o 	 b e 	 a t t e m p t e d 	 s e p a r a t e l y .
v . 	 Q u e s t i o n 	 n u m b e r s 	 1 	 t o 	 2 	 i n 	 S e c t i o n 	 A 	 a r e 	 o n e 	 m a r k 	 q u e s t i o n s . 	 T h e s e 	 a r e 	 t o 	 b e 	 a n s w e r e d
i n 	 o n e 	 w o r d 	 o r 	 i n 	 o n e 	 s e n t e n c e .
v i . 	 Q u e s t i o n 	 n u m b e r s 	 3 	 a n d 	 5 	 i n 	 S e c t i o n 	 A 	 a r e 	 t w o 	 m a r k s 	 q u e s t i o n s . 	 T h e s e 	 a r e 	 t o 	 b e
a n s w e r e d 	 i n 	 a b o u t 	 3 0 	 w o r d s 	 e a c h .
v i i . 	 Q u e s t i o n 	 n u m b e r s 	 6 	 t o 	 1 5 	 i n 	 S e c t i o n 	 A 	 a r e 	 t h r e e 	 m a r k s 	 q u e s t i o n s . 	 T h e s e 	 a r e 	 t o 	 b e
a n s w e r e d 	 i n 	 a b o u t 	 5 0 	 w o r d s 	 e a c h .
v i i i . 	 Q u e s t i o n 	 n u m b e r s 	 1 6 	 t o 	 2 1 	 i n 	 S e c t i o n 	 A 	 a r e 	 f v e 	 m a r k s 	 q u e s t i o n s . 	 T h e s e 	 a r e 	 t o 	 b e
a n s w e r e d 	 i n 	 a b o u t 	 7 0 	 w o r d s 	 e a c h .
i x . 	 Q u e s t i o n 	 n u m b e r s 	 2 2 	 t o 	 2 7 	 i n 	 S e c t i o n 	 B 	 a r e 	 t w o 	 m a r k s 	 q u e s t i o n s 	 b a s e d 	 o n 	 p r a c t i c a l 	 s k i l l s .
T h e s e 	 a r e 	 t o 	 b e 	 a n s w e r s 	 i n 	 a b o u t 	 3 0 	 w o r d s 	 e a c h .
S e c t i o n 	 ' A '
1 . 	 W h a t 	 a r e 	 L i c h e n s ?
2 . 	 W h i c h 	 p a r t 	 o f 	 t h e 	 p l a n t 	 c e l l 	 p e r m i t s 	 i t 	 t o 	 w i t h s t a n d 	 v e r y 	 d i l u t e 	 e x t e r n a l 	 m e d i u m 	 w i t h o u t
b u r s t i n g ?
3 . 	 A 	 l a m p 	 c o n s u m e r s 	 1 0 0 0 	 J 	 o f 	 e l e c t r i c a l 	 e n e r g y 	 i n 	 2 0 	 s e c o n d s . 	 w h a t 	 i t 	 i t s 	 p o w e r ?
4 . 	 D e f i n e :
i . 	 F l u i d , 	 i i . 	 B u o y a n t 	 f o r c e
5 . 	 W h a t 	 i s 	 G r e e n 	 H o u s e 	 E f f e c t .
6 . 	 I n 	 e l e m e n t s 	 i s 	 r e p r e s e n t e d 	 a s 	 . 	 F i n d
a . 	 T h e 	 n u m b e r 	 o f 	 e l e c t r o n s 	 i n 	 e l e m e n t 	 X .
2 	 / 	 3
b . 	 M a s s 	 n u m b e r 	 o f 	 t h e 	 e l e m e n t 	 X .
c . 	 T h e 	 N u m b e r 	 o f 	 n e u t r o n s 	 i n 	 e l e m e n t 	 X .
7 . 	 G i v e 	 t w o 	 e x a m p l e 	 e a c h 	 o f 	 o r g a n i s m 	 b e l o n g i n g 	 t h e 	 f o l l o w i n g 	 p h y l u m s :
a . 	 A r t h r o p o d a
b . 	 M o l l u s c a
c . 	 P r o t o c h o r d a t a
8 . 	 D e r i v e 	 g r a p h i c a l l y 	 t h e 	 e q u a t i o n 	 f o r 	 p o s i t i o n 	 t i m e 	 r e l a t i o n 	 f o r 	 a n 	 o b j e c t 	 t r a v e l i n g 	 a
d i s t a n c e 	 ' s ' 	 i n 	 t i m e 	 ' t ' 	 u n d e r 	 u n i f o r m 	 a c c e l e r a t i o n .
9 . 	 L i s t 	 a n y 	 t h r e e 	 p r o p e r t i e s 	 t h e 	 b a s i c 	 o f 	 w h i c h 	 a 	 c o l l o i d a l 	 s o l u t i o n 	 c a n 	 b e 	 r e c o g n i z e d .
1 0 . 	 A n 	 e l e m e n t 	 c a n 	 h a v e 	 a t o m s 	 w i t h 	 d i f f e r e n t 	 m a s s 	 n u m b e r s 	 b u t 	 s a m e 	 c h e m i c a l 	 p r o p e r t i e s
a n d 	 s o m e 	 a r e 	 a l s o 	 u s e d 	 i n 	 t h e 	 f i e l d 	 o f 	 m e d i c i n e 	 i n 	 t h e 	 t r e a t m e n t 	 o f 	 d i s e a s e s ?
i . 	 W h a t 	 a r e 	 s u c h 	 e l e m e n t 	 k n o w n 	 a s ?
i i . 	 D e f i n e 	 s u c h 	 e l e m e n t 	 a n d 	 a l s o 	 w r i t e 	 o n e 	 e x a m p l e s .
i i i . 	 W h i c h 	 p r o p e r t i e s 	 a r e 	 d i f f e r e n t 	 i n 	 t h e m ?
1 1 . 	 A 	 m a n 	 h a s 	 a n 	 a u d i b l e 	 r a n g e 	 f r o m 	 2 0 	 H z 	 t o 	 2 0 	 K H z . 	 W h a t 	 a r e 	 t h e 	 w a v e l e n g t h s 	 o f 	 s o u n d 	 i n
c o r r e s p o n d i n g 	 t o 	 t h e s e 	 t w o 	 f r e q u e n c i e s ? 	 ( S p e e d 	 s o u n d 	 i n 	 a i r 	 i s 	 3 4 4 	 m / s )
1 2 . 	 N a m e 	 t h e 	 f o l l o w i n g 	 a n d 	 g i v e 	 o n e 	 c h a r a c t e r i s t i c 	 o f 	 e a c h . 	 T h e 	 w a x y 	 s u b s t a n c e s 	 c o a t i n g 	 t h e
e p i d e r m i s 	 i n 	 d e s e r t 	 p l a n t s , 	 s u i c i d a l 	 b a g s 	 o f 	 t h e 	 c e l l s .
F a t 	 s t r o n g 	 c e l l s 	 b e l o w 	 t h e 	 s k i n 	 a n d 	 b e t w e e n 	 i n t e r n a l 	 o r g a n s .
1 3 . 	 W h a t 	 a r e 	 p h a n e r o g a m s ? 	 N a m e 	 i t s 	 t w o 	 g r o u p s 	 a n d 	 w r i t e 	 o n e 	 d i f f e r e n c e .
1 4 . 	 D r a w 	 a 	 w e l l 	 l a b e l e d 	 d i a g r a m 	 o f 	 c a r b o n 	 c y c l e .
1 5 . 	 R a v i 	 i s 	 a 	 p o o r 	 l a b o u r e r . 	 f o r 	 l a s t 	 f e w 	 d a y s 	 h e 	 u s e d 	 t o 	 f e e l 	 p a i n , 	 i n 	 h i s 	 l o w e r 	 a b d o m e n 	 a s
w e l l 	 a s 	 i n 	 h i s 	 b a c k . 	 W h e n 	 h e 	 w e n t 	 t o 	 a 	 d o c t o r . 	 t h e 	 d o c t o r 	 p r e s c r i b e d 	 s o m e 	 t e s t s 	 a s 	 w e l l 	 a s
u l t r a s o n o g r a p h y 	 o f 	 l o w e r 	 a b d o m e n . 	 W h e n 	 R i t a 	 w h o 	 l i v e d 	 n e a r b y 	 c a m e 	 t o 	 k n o w 	 o f 	 t h i s ,
S h e 	 d e c i d e d 	 t o 	 g i v e 	 f i n a n c i a l 	 h e l p 	 t o 	 R a v i , 	 a f t e r 	 t e s t s 	 a n d 	 u l t r a s o u n d 	 i t 	 w a s 	 f o u n d 	 t h a t
t h e r e 	 w a s 	 a 	 s t o n e 	 i n 	 t h e 	 l e f t 	 k i d n e y 	 o f 	 R a v i . 	 R i t a 	 a s k e d 	 h e r 	 n e i g h b o u r s 	 t o 	 c o n t r i b u t e 	 f o r
t h e 	 o p e r a t i o n . 	 A l l 	 n e i g h b o u r s 	 c o n t r i b u t e d 	 f o r 	 t h e 	 o p e r a t i o n 	 a s 	 w e l l 	 a s 	 s u b s e q u e n t
m e d i c a l 	 e x p e n s e s . 	 N o w 	 R a v i 	 i s 	 a b s o l u t e l y 	 f i t .
W h a t 	 i s 	 u l t r a s o u n d ? 	 E x p l a i n 	 i t s 	 w o r k i n g 	 p r i n c i p l e . 	 W h a t 	 v a l u e s 	 a r e 	 S h o w n 	 b y 	 R i t a 	 a n d
h e r 	 n e i g h b o u r s ?
1 6 . 	 i . 	 H e l i u m 	 a t o m 	 h a s 	 a n 	 a t o m i c 	 m a s s 	 o f 	 	 a n d 	 t w o 	 p r o t o n s 	 i n 	 t o 	 n u c l e u s . 	 H o w 	 m a n y
n e u t r o n s 	 d o e s 	 i t 	 h a v e ?
i i . 	 W r i t e 	 d o w n 	 t h e 	 e l e c t r o n i c 	 c o n f i g u r a t i o n 	 o f 	 o x y g e n .
3 	 / 	 3
i i i . 	 T h e 	 a t o m i c 	 m a s s 	 o f 	 a n 	 e l e m e n t 	 X 	 i s 	 1 6 . 2 4 . 	 W h a t 	 a r e 	 t h e 	 p e r c e n t a g e s 	 o f 	 i s o t o p e s 	 o f 	 ' X '
h a v i n g 	 a t o m i c 	 n u m b e r 	 8 	 a n d 	 m a s s 	 n u m b e r s 	 1 6 	 a n d 	 1 8 .
1 7 . 	 G i v e 	 e x a m p l e s 	 o f 	 o r g a n i s m s 	 b e l o n g i n g 	 t o 	 K i n g d o m 	 P r o t i s t a :
B a s e d 	 o n 	 s t r u c t u r e 	 f o r 	 l o c o m o t i o n .
B a s e d 	 o n 	 m o d e 	 o f 	 n u t r i t i o n .
1 8 . 	 T h e 	 i m m u n e 	 s y s t e m 	 o f 	 H a r i 	 i s 	 d a m a g e d 	 b y 	 t h e 	 a t t a c k 	 a 	 p a t h o g e n 	 o n 	 h i s 	 b o d y .
N a m e 	 t h e 	 d i s e a s e 	 h e 	 i s 	 s u f f e r i n g 	 f r o m .
N a m e 	 t h e 	 p a t h o d e n 	 t h a t 	 h a s 	 a t t a c k e d 	 h i s 	 b o d y .
M e n t i o n 	 a n y 	 t h r e e 	 m o d e s 	 o f 	 t r a n s m i s s i o n 	 o f 	 h i s 	 d i s e a s e .
1 9 . 	 D e f i n e 	 w o r k . 	 G i v e 	 S . I . 	 U n i t 	 o f 	 w o r k .
C a l c u l a t e 	 t h e 	 w o r k 	 d o n e 	 i n 	 p u s h i n g 	 a 	 c a r t 	 t h r o u g h 	 a 	 d i s t a n c e 	 o f 	 5 6 m 	 a g a i n s t 	 t h e 	 f o r c e 	 o f
o n 	 e q u a l 	 t o 	 2 5 0 	 N . 	 A l s o 	 s t a t e 	 t h e 	 t y p e 	 w o r k 	 d o n e .
S a r i t a 	 l i v e s 	 o n 	 3 r d 	 f l o o r 	 o f 	 t h e 	 b u i l d i n g 	 a t 	 t h e 	 h e i g h t 	 o f 	 1 5 m 	 c a r r i e s 	 h e r 	 s c h o o l 	 b a g
w e i g h t i n g 	 5 . 2 	 k g 	 f r o m 	 t h e 	 g r o u n d 	 f l o o r 	 t o 	 h e r 	 h o u s e . 	 F i n d 	 t h e 	 a m o u n t 	 o f 	 w o r k 	 d o n e 	 b y
h e r 	 a n d 	 i d e n t i f y 	 t h e 	 f o r c e 	 a g a i n s t 	 w h i c h 	 s h e 	 h a s 	 d o n e 	 w o r k . 	 ( g = 1 0 	 m s
- 2
)
2 0 . 	 D e f i n e 	 f r e q u e n c y 	 a n d 	 w a v e 	 l e n g t h 	 w i t h 	 r e f e r e n c e 	 t o 	 s o u n d . 	 E x p l a i n 	 w h a t 	 t o 	 e c h o . 	 W r i t e
f u l l 	 f o r m 	 o f 	 S O N A R . 	 G i v e 	 a n y o n e 	 a p p l i c a t i o n 	 o f 	 u l t r a s o u n d .
2 1 . 	 D e s c r i b e 	 a n 	 a c t i v i t y 	 t o 	 s h o w 	 t h a t 	 i n k 	 i s 	 a 	 m i x t u r e 	 o f 	 a 	 d y e 	 i n 	 w a t e r . 	 D r a w 	 a 	 l a b e l l e d
d i a g r a m 	 a n d 	 s t a t e 	 t h e 	 u n d e r l y i n g 	 p r i n c i p l e .
S E C T I O N 	 ' B '
2 2 . 	 N a m e 	 t h e 	 a d a p t a t i o n 	 o f 	 f i s h 	 w h i c h 	 h e l p s 	 i t 	 i n 	 e a c h 	 o f 	 t h e 	 f o l l o w i n g :
a . 	 S w i m m i n g 	 i n 	 w a t e r , 	 b . 	 B r e a t h i n g
2 3 . 	 T o 	 d e t e r m i n e 	 t h e 	 d e n s i t y 	 o f 	 a 	 S o l i d 	 ( d e n s e r 	 t h a n 	 w a t e r ) 	 b y 	 u s i n g 	 a 	 s p r i n g 	 b a l a n c e 	 a n d
m e a s u r i n g 	 c y l i n d e r , 	 w r i t e 	 d o w n 	 f o u r 	 s t e p s 	 o f 	 t h e 	 p r o c e d u r e .
2 4 . 	 S t a t e 	 a n y 	 t w o 	 s p e c i f i c 	 f e a t u r e s 	 o f 	 E a r t h 	 w o r m .
2 5 . 	 D r a w 	 a 	 d i a g r a m 	 o f 	 g r a d u a t e d 	 c y l i n d e r 	 o f 	 r a n g e 	 o f 	 0 - 1 0 0 	 m L .
2 6 . 	 A 	 m i x t u r e 	 o f 	 s a n d , 	 c h a l k 	 p o w d e r 	 a n d 	 c o m m o n 	 s a l t 	 i s 	 d i s s o l v e d 	 i n 	 w a t e r 	 a n d 	 t h e n 	 f i l t e r e d .
N a m e 	 t h e 	 s u b s t a n c e 	 l e f t 	 o n 	 f i l t e r 	 p a p e r . 	 N a m e 	 t h e 	 s u b s t a n c e 	 i n 	 t h e 	 f i l t e r .
2 7 . 	 I n 	 a n 	 e x p e r i m e n t 	 t o 	 d e t e r m i n e 	 t h e 	 b o i l i n g 	 p o i n t 	 o f 	 w a t e r , 	 s t a t e 	 r e a s o n 	 f o r 	 t h e 	 f o l l o w i n g :
i . 	 P u m i c e 	 s t o n e 	 p i e c e s 	 a r e 	 a d d e d 	 t o 	 w a t e r 	 i n 	 t h e 	 b e a k e n .
i i . 	 A 	 g l a s s 	 s t i r r e r 	 i s 	 u s e d .
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FAQs on CBSE Sample Paper - 2, Science, Class 9

1. What is the CBSE Class 9 Science Sample Paper-2?
Ans. The CBSE Class 9 Science Sample Paper-2 is a practice paper designed by the Central Board of Secondary Education (CBSE) for students in Class 9. It is meant to help students prepare for their Science exam by providing them with a similar format and type of questions that they can expect in the actual exam.
2. How can I access the CBSE Class 9 Science Sample Paper-2?
Ans. The CBSE Class 9 Science Sample Paper-2 can be accessed through various sources. It may be available on the official CBSE website or can be obtained from the student's school. In addition, there are several educational websites and online platforms that provide sample papers for CBSE exams, including the Science paper for Class 9.
3. What is the importance of solving the CBSE Class 9 Science Sample Paper-2?
Ans. Solving the CBSE Class 9 Science Sample Paper-2 is important for several reasons. Firstly, it helps students become familiar with the exam pattern and question types, allowing them to develop a better understanding of what to expect in the actual exam. Secondly, it provides an opportunity for students to practice their time management skills and improve their speed in answering questions. Lastly, solving sample papers enables students to identify their strengths and weaknesses, allowing them to focus on areas that require more attention.
4. Are the questions in the CBSE Class 9 Science Sample Paper-2 similar to the actual exam?
Ans. The questions in the CBSE Class 9 Science Sample Paper-2 are designed to be similar to the ones that students can expect in the actual exam. However, it's important to note that the exact questions may vary, as the sample paper is meant to provide a general idea of the question format and difficulty level. It is still recommended to refer to the official CBSE curriculum and previous year question papers for a more accurate representation of the actual exam.
5. How should I use the CBSE Class 9 Science Sample Paper-2 for effective preparation?
Ans. To use the CBSE Class 9 Science Sample Paper-2 effectively, start by familiarizing yourself with the question pattern and marking scheme. Then, attempt to solve the sample paper under exam-like conditions, i.e., within the given time limit and without any distractions. After completing the paper, evaluate your performance, identify areas where you struggled, and revise those topics accordingly. It is also beneficial to seek feedback from teachers or mentors to gain insights and improve your exam preparation strategies.
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