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ALL I N D I A S A I N I K S C H O O L E N T R A N C E E X A M I N A T I O N : 2 0 1 5 PAPER I - M A T H E M A T I C S A N D SCIENCE CLASS IX Time: 2 1/ 2 hrs Name i n f u l l Signature o f i n v i g i l a t o r - M a x M a r k s : 275 (Maths: 2 0 0 & S c i e n c e : 7 5 ) Roll No C o d e N o (To b e f i l l e d b y t h e Office) PAPER I - M A T H E M A T I C S A N D S C I E N C E : C L A S S IX Note:- Candidates are NOT TO WRITE name, roll number or any identification m a r k / t e x t o n a n y page o f t h i s a n s w e r book. FOR O F F I C E P U R P O S E O N L Y Code No MARKS OBTAINED PART A PART B Signature o f E x a m i n e r Checked by Note:- (a) T h i s p a p e r c o n t a i n s t w o p a r t s - P a r t ' A ' i s M a t h e m a t i c s a n d P a r t ' B ' i s Science. You a r e r e q u i r e d t o a t t e m p t A L L q u e s t i o n s i n e a c h part. (b) P a r t ' A ' ( M a t h e m a t i c s ) contains 5 0 q u e s t i o n s . M a r k s a r e i n d i c a t e d against each question. (c) Part 'B' (Science) contains 37 questions. Marks are indicated against each question. (d) W r i t e y o u r a n s w e r s i n t h e s p a c e p r o v i d e d i n t h e q u e s t i o n paper. (e) R o u g h w o r k i s t o b e d o n e a t s p a c e p r o v i d e d only. (f) W r i t e a l l y o u r a n s w e r s i n B l u e / B l a c k i n k o n l y . D o n o t u s e pencil. (g) T h i s b o o k l e t c o n t a i n s 3 2 pages.
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Page 1: PAPER I - MATHEMATICS AND SCIENCE 1 2 hrs · ALL INDIA SAINIK SCHOOL ENTRANCE EXAMINATION: 2015 PAPER I - MATHEMATICS AND SCIENCE CLASS IX Time: 2 1/ 2 hrs Name in full Signature

A L L I N D I A S A I N I K S C H O O L E N T R A N C E E X A M I N A T I O N : 2 0 1 5 P A P E R I - M A T H E M A T I C S A N D S C I E N C E

C L A S S I X

T i m e : 2 1/ 2 h r s

N a m e i n f u l l

S i g n a t u r e o f i n v i g i l a t o r -

M a x M a r k s : 2 7 5 ( M a t h s : 2 0 0 & S c i e n c e : 7 5 )

R o l l N o

C o d e N o ( T o b e f i l l e d b y t h e O f f i c e )

P A P E R I - M A T H E M A T I C S A N D S C I E N C E : C L A S S I X

N o t e : - C a n d i d a t e s a r e N O T T O W R I T E n a m e , r o l l n u m b e r o r a n y i d e n t i f i c a t i o n m a r k / t e x t o n a n y p a g e o f t h i s a n s w e r b o o k .

F O R O F F I C E P U R P O S E O N L Y

C o d e N o

M A R K S O B T A I N E D

P A R T A P A R T B

S i g n a t u r e o f E x a m i n e r C h e c k e d b y

N o t e : -

( a ) T h i s p a p e r c o n t a i n s t w o p a r t s - P a r t ' A ' i s M a t h e m a t i c s a n d P a r t ' B ' i s S c i e n c e . Y o u a r e r e q u i r e d t o a t t e m p t A L L q u e s t i o n s i n e a c h p a r t .

( b ) P a r t ' A ' ( M a t h e m a t i c s ) c o n t a i n s 5 0 q u e s t i o n s . M a r k s a r e i n d i c a t e d a g a i n s t e a c h q u e s t i o n .

( c ) P a r t ' B ' ( S c i e n c e ) c o n t a i n s 3 7 q u e s t i o n s . M a r k s a r e i n d i c a t e d a g a i n s t e a c h q u e s t i o n .

( d ) W r i t e y o u r a n s w e r s i n t h e s p a c e p r o v i d e d i n t h e q u e s t i o n p a p e r .

( e ) R o u g h w o r k i s t o b e d o n e a t s p a c e p r o v i d e d o n l y .

( f ) W r i t e a l l y o u r a n s w e r s i n B l u e / B l a c k i n k o n l y . D o n o t u s e p e n c i l .

( g ) T h i s b o o k l e t c o n t a i n s 3 2 p a g e s .

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P a r t - A : M A T H E M A T I C S M a x . M a r k s : 2 0 0

S E C T I O N - i ( E a c h q u e s t i o n c a r r i e s t w o m a r k s )

Q 1 . S o l v e ( 3 / 7 ) M A I ) M A I ) + ( 5 / ' I I )

Q 2 . F i n d a n y t h r e e r a t i o n a l n u m b e r s b e t w e e n 3 a n d 4 .

Q 3 . T w o n u m b e r s a r e i n t h e r a t i o 5 : 3 . I f t h e y d i f f e r b y 1 8 , w h a t a r e t h e n u m b e r s .

6

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Q 4 . C o n v e r t t h e f o l l o w i n g r a t i o s t o p e r c e n t a g e s ,

( i ) 2 : 3

( i i ) 3 : 4

Q 5 . F i n d t h e n u m b e r o f s i d e s o f a r e g u l a r p o l y g o n w h o s e e a c h e x t e r i o r a n g l e h a s a m e a s u r e o f 45°

Q 6 . S t a t e w h e t h e r T r u e o r F a l s e .

( i ) A l l r h o m b u s e s a r e p a r a l l e l o g r a m s .

( i i ) A l l p a r a l l e l o g r a m s a r e t r a p e z i u m s .

( i i i ) A i l s q u a r e s a r e n o t p a r a l l e l o g r a m s .

( i v ) A l l s q u a r e s a r e t r a p e z i u m s .

Q 7 . T h e l i s t p r i c e o f a f r o c k i s R s . 2 2 0 . A d i s c o u n t o f 2 0 % i s a n n o u n c e d o n s a l e s . W h a t i s t h e a m o u n t o f d i s c o u n t o n i t a n d i t s s a l e p r i c e .

7

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Q 8 . H o w m a n y n u m b e r s l i e b e t w e e n t h e s q u a r e s o f t h e f o l l o w i n g n u m b e r s ?

( i ) 2 5 a n d 2 6

( i i ) 9 9 a n d 1 0 0

Q 9 . F i n d t h e s q u a r e r o o t o f 6 4 0 0 t h r o u g h p r i m e f a c t o r i s a t i o n m e t h o d .

Q . 1 0 . A d i c e i s t h r o w n t h e n , f i n d t h e p r o b a b i l i t y o f g e t t i n g p r i m e n u m b e r .

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Q . 1 1 . S h y a m b o u g h t a n a i r c o o l e r f o r R s . 3 3 0 0 i n c l u d i n g a t a x o f 1 0 % . F i n d t h e p r i c e o f t h e a i r c o o l e r b e f o r e V A T w a s a d d e d .

Q . 1 2 . H o w m a n y d i a g o n a l s d o e s e a c h o f t h e f o l l o w i n g h a v e : ( a ) C o n v e x Q u a d r i l a t e r a l ( b ) A r e g u l a r H e x a g o n

Q . 1 3 . F a c t o r i s e : X 2 - 7 x + 1 2

Q 1 4 . S i m p l i f y t h e e x p r e s s i o n 3 y ( 2 y - 7 ) - 3 ( y - 4 ) - 6 3 f o r y = - 2

9

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Q 1 5 . U s i n g t h e I d e n t i t y ( I ) , f i n d ( 2 x + 3 y ) 2

Q 1 6 . F i n d t h e a r e a o f t h e q u a d r i l a t e r a l P Q R S s h o w n i n t h e f i g u r e .

Q 1 7 . F i n d t h e h e i g h t o f a c y l i n d e r w h o s e r a d i u s i s 7 c m a n d t h e t o t a l s u r f a c e a r e a i s 9 6 8 c m 2 .

"I 3 Q 1 8 . E v a l u a t e 8 " X 5 u s i n g l a w o f e x p o n e n t s a n d p o w e r s .

2 " 4

1 0

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Q 1 3 . S i x p i p e s a r e r e q u i r e d t o f i l l a t a n k i n 1 h o u r 2 0 m i n u t e s . H o w l o n g w i l l i t t a k e i f o n l y f i v e p i p e s o f t h e s a m e t y p e a r e u s e d ?

Q 2 0 . S o l v e X + X •= X 7 4 6

S E C T I O N - I I ( E a c h q u e s t i o n c a r r i e s t h r e e m a r k s )

Q . 2 1 T h e d i f f e r e n c e b e t w e e n t w o w h o l e n u m b e r s i s 6 6 . T h e r a t i o o f t h e t w o n u m b e r s i s 2 : 5 . W h a t a r e t h e t w o n u m b e r s ?

i i

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Q . 2 2 I n t h e f i g u r e , B E S T i s a p a r a l l e l o g r a m . F i n d t h e v a l u e s o f a n g l e s x , y a n d z .

Q 2 3 A b a g h a s 4 r e d b a l l s a n d 2 y e l l o w b a l l s . T h e b a l l s a r e i d e n t i c a l i n a l l r e s p e c t s o t h e r t h a n c o l o u r . A b a l l i s d r a w n f r o m t h e b a g w i t h o u t l o o k i n g i n t o t h e b a g . W h a t i s t h e p r o b a b i l i t y o f g e t t i n g a r e d b a l l ? I s i t m o r e o r l e s s t h a n g e t t i n g a y e l l o w b a l l ?

Q . 2 4 W r i t e a P y t h a g o r e a n t r i p l e t w h o s e s m a l l e s t n u m b e r i s 8 .

T S

1 2

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Q . 2 5 A s h o p k e e p e r p u r c h a s e d 2 0 0 b u l b s f o r R s 1 0 e a c h . H o w e v e r 5 b u l b s w e r e f u s e d a n d h a d t o b e t h r o w n a w a y . T h e r e m a i n i n g w e r e s o l d a t R s 1 2 e a c h . F i n d g a i n % o r l o s s %.

Q . 2 6 F i n d C o m p o u n d I n t e r e s t o n R s 1 2 , 6 0 0 / - f o r 2 y e a r s a t 1 0 % p e r a n n u m c o m p o u n d e d a n n u a l l y .

Q. 27 Simplify (a+b) (2a-3b+c) - (2a-3b)c

1 3

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Q. 2 8 F o r t h e g i v e n s o l i d , d r a w t h e t o p v i e w , f r o n t v i e w a n d s i d e v i e w .

Q . 2 9 ( a ) H o w a r e p r i s m s a n d c y l i n d e r s a l i k e ?

( b ) H o w a r e p y r a m i d s a n d C o n e s a l i k e ?

( c ) I s a s q u a r e p r i s m s a m e a s a c u b e ?

Q . 3 0 A g o d o w n i s i n t h e f o r m o f a c u b o i d o f m e a s u r e 6 0 m x 4 0 m x 3 0 m . H o w m a n y c u b o i d b o x e s c a n b e s t o r e d i f t h e v o l u m e o f o n e b o x i s 0 . 8 m 3 ?

1 4

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Q . 3 1 A r e c t a n g u l a r p i e c e o f p a p e r 1 1 c m x 4 c m i s f o l d e d w i t h o u t o v e r l a p p i n g t o m a k e a c y l i n d e r o f h e i g h t 4 c m . F i n d t h e v o l u m e o f t h e c y l i n d e r .

{ ( i f - e n * a r

Q . 3 3 I f t h e t h r e e d i g i t n u m b e r 2 4 x i s d i v i s i b l e b y 9 , w h a t i s t h e v a l u e o f x ?

15

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Q . 3 4 T h e f o u r a n g l e s o f a q u a d r i l a t e r a l a r e i n t h e r a t i o 2 : 3 : 5 : 8 . F i n d t h e a n g l e s ?

Q . 3 5 S u m o f t w o n u m b e r s i s 7 4 . O n e o f t h e n u m b e r s i s 1 0 m o r e t h a n t h e o t h e r w h a t a r e t h e n u m b e r s .

Q . 3 6 T h e p e r i m e t e r o f a r e c t a n g l e i s 1 3 c m a n d i t s w i d t h i s 23A c m . F i n d i t s l e n g t h .

1 6

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Q . 3 7 C E R I I s a r o m b h u s a s s h o w n i n f i g u r e . F i n d x , y , z .

R

Q . 3 8 . A s u m o f R s 1 0 0 0 0 i s b o r r o w e d a t a r a t e o f i n t e r e s t o f 1 5 % p e r a n n u m f o r 2 y e a r s . F i n d t h e s i m p l e i n t e r e s t o n t h i s s u m a n d t h e a m o u n t t o b e p a i d a t t h e e n d o f t w o y e a r s .

m

Q . 3 9 T h e p o p u l a t i o n o f a c i t y w a s 2 0 , 0 0 0 i n t h e y e a r 2 0 0 7 . I t i n c r e a s e d a t t h e r a t e o f 5 % p e r a n n u m . F i n d t h e p o p u l a t i o n a t t h e e n d o f y e a r 2 0 1 0 .

1 7

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Q . 4 0 I f e a c h e d g e o f a c u b e i s d o u b l e d

( i ) H o w m a n y t i m e s w i l l i t s s u r f a c e a r e a i n c r e a s e ?

( i i ) H o w m a n y t i m e s w i l l i t s v o l u m e i n c r e a s e ?

S E C T I O N - I I I ( E a c h q u e s t i o n c a r r i e s t e n m a r k s )

Q . 4 1 K a r a n h a s a t o t a l o f R s 5 9 0 a s c u r r e n c y n o t e s i n t h e d e n o m i n a t i o n s o f R s 5 0 , R s 2 0 a n d R s 1 0 . T h e r a t i o o f n u m b e r o f R s 5 0 n o t e s a n d R s 2 0 n o t e s i s 3 : 5 . I f h e h a s a t o t a l o f 2 5 n o t e s , h o w m a n y n o t e s o f e a c h d e n o m i n a t i o n d o e s h e h a v e ?

1 8

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Q . 4 2 O n a p a r t i c u l a r d a y , t h e s a l e s ( i n r u p e e s ) o f d i f f e r e n t i t e m s o f a b a k e r ' s s h o p a r e g i v e n b e l o w . D r a w a p i e - c h a r t f o r t h i s d a t a .

Q . 4 3 A p i c n i c i s b e i n g p l a n n e d i n a s c h o o l f o r c l a s s V I I I . G i r l s a r e 6 0 % o f t h e t o t a l n u m b e r o f s t u d e n t s a n d a r e 1 8 i n n u m b e r . T h e p i c n i c s i t e i s 5 5 k m f r o m t h e s c h o o l a n d t h e t r a n s p o r t c o m p a n y i s c h a r g i n g a t t h e r a t e o f R s 1 2 p e r k m . T h e t o t a l c o s t o f r e f r e s h m e n t s w i l l b e R s 4 2 8 0 . F i n d o u t t h e f o l l o w i n g :-

( a ) T h e r a t i o o f t h e n u m b e r o f g i r l s t o t h e n u m b e r o f b o y s i n t h e c l a s s .

( b ) T h e c o s t p e r h e a d i f t w o t e a c h e r s a r e a l s o g o i n g w i t h t h e c l a s s .

( c ) I f t h e i r f i r s t s t o p i s a t a p l a c e 2 2 k m f r o m t h e s c h o o l , w h a t p e r c e n t o f t h e t o t a l d i s t a n c e o f 5 5 k m i s t h i s ? W h a t p e r c e n t o f d i s t a n c e i s l e f t t o b e c o v e r e d . .

( a ) ( b ) ( c ) ( d ) ( e )

O r d i n a r y B r e a d F r u i t B r e a d C a k e s a n d P a s t r i e s B i s c u i t s O t h e r

3 2 0 8 0

1 6 0 1 2 0

4 0

1 9

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Q . 4 4 T o t a l c o s t o f 5 m e t r e s o f a p a r t i c u l a r q u a l i t y o f c l o t h i s R s 2 1 0 . T a b u l a t e t h e c o s t o f 2 , 4 , 1 0 a n d 1 3 m e t r e s o f c l o t h o f s a m e t y p e u s i n g p r o p o r t i o n s .

Q . 4 5 O b s e r v e t h e h i s t o g r a m o n f i g u r e a n d a n s w e r t h e q u e s t i o n s g i v e n b e l o w :

( i ) W h a t i n f o r m a t i o n i s b e i n g g i v e n b y t h e h i s t o g r a m ? ( i i ) W h a t g r o u p c o n t a i n s m a x i m u m g i r l s . ( i i i ) H o w m a n y g i r l s h a v e a l e n g t h o f m o r e t h a n 1 4 5 c m ? ( i v ) I f w e d i v i d e t h e g i r l s i n t o t h e f o l l o w i n g c a t e g o r i e s , h o w m a n y w o u l d t h e r e b e i n e a c h ?

1 5 0 c m a n d m o r e - G r o u p A 1 4 0 t o l e s s t h a n 1 5 0 c m - G r o u p B L e s s t h a n 1 4 0 c m - G r o u p C

2 0

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Q . 4 6 ( a ) I s 2 3 5 2 a p e r f e c t s q u a r e ? I f n o t , f i n d t h e s m a l l e s t m u l t i p l e o f 2 3 5 2 w h i c h i s a p e r f e c t s q u a r e . F i n d t h e s q u a r e r o o t o f t h e n e w n u m b e r .

( b ) F i n d s m a l l e s t n u m b e r b y w h i c h 9 4 0 8 m u s t b e d i v i d e d s o t h a t t h e q u o t i e n t i s a p e r f e c t s q u a r e . F i n d t h e s q u a r e r o o t o f t h e q u o t i e n t .

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Q . 4 7 T h e r e c t a n g u l a r p a r k i n f i g u r e i s o f l e n g t h 3 0 m a n d w i d t h 2 0 m . H a v i n g u n d e r s t o o d t h e f i g u r e a n s w e r s t h e f o l l o w i n g q u e s t i o n s .

2 0 m

( a ) W h a t i s t h e t o t a l l e n g t h o f t h e f e n c e s u r r o u n d i n g i t ?

( b ) H o w m u c h l a n d i s o c c u p i e d b y t h e p a r k ?

( c ) T h e r e i s a p a t h o f o n e m e t r e w i d t h r u n n i n g i n s i d e a l o n g t h e p e r i m e t e r o f t h e p a r k

t f c a t h a s t o b e c e m e n t e d . I f 1 b a g c e m e n t i s r e q u i r e d t o c e m e n t 4 m 2 a r e a , h o w m a n y b a g s o f c e m e n t w i l l b e r e q u i r e d t o c o n s t r u c t t h e c e m e n t e d p a t h ?

( d ) T h e r e a r e t w o r e c t a n g u l a r f l o w e r b e d s o f s i z e 1 . 5 m x 2 m e a c h i n t h e p a r k a s s h o w n i n t h e d i a g r a m a n d t h e r e s t h a s g r a s s i n i t . F i n d t h e a r e a c o v e r e d b y g r a s s .

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Q . 4 8 T h e i n t e r n a l m e a s u r e s o f a c u b o i d a l r o o m a r e 1 2 m x 8 m x 4 m . F i n d t h e t o t a l c o s t o f w h i t e w a s h i n g a l l t h e f o u r w a l l s o f t h e r o o m , i f t h e c o s t o f w h i t e w a s h i n g i s R s 5 p e r m 2 . W h a t w i l l b e t h e c o s t o f w h i t e w a s h i n g i f t h e c e i l i n g o f t h e r o o m i s a l s o w h i t e w a s h e d .

Q . 4 9 ( a ) M a s s o f e a r t h i s 5 . 9 7 x 1 0 2 4 k g a n d m a s s o f m o o n i s 7 . 3 5 x 1 0 2 2 k g . W h a t i s t h e t o t a l m a s s ?

( b ) T h e d i s t a n c e b e t w e e n s u n e n d e a r t h i s 1 . 4 9 6 x 1 0 1 1 m a n d t h e d i s t a n c e b e t w e e n e a r t h a n d m o o n i s 3 . 8 4 x 1 0 8 m . D u r i n g s o l a r e c l i p s e m o o n c o m e s b e t w e e n e a r t h a n d s u n . A t t h a t t i m e w h a t i s t h e d i s t a n c e b e t w e e n m o o n a n d s u n ?

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Q . 5 0 D e f i n e t h e f o l l o w i n g :

( a ) A B a r G r a p h :

( b ) A p i e - c h a r t :

( c ) A H i s t o g r a m :

( d ) F r e q u e n c y :

( e ) A p i c t o g r a p h :

»

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P A R T - B : S C I E N C E

M a x M a r k s : 7 5

N o t e : P a r t B B e a r i n g 7 5 m a r k s , c o n t a i n s 3 7 q u e s t i o n s . Q u e s t i o n N o . 1 t o 1 5 c a r r y 1 m a r k e a c h . Q u e s t i o n N o . 1 6 t o 2 5 c a r r y 2 m a r k s e a c h . Q u e s t i o n N o . 2 6 t o 3 5 c a r r y 3 m a r k s e a c h . Q u e s t i o n N o . 3 6 & 3 7 c a r r y 5 m a r k s e a c h .

M a r k y o u r a n s w e r b y p u t t i n g a T i c k M a r k {S) o n t h e c o r r e c t o p t i o n . O v e r w r i t i n g i s N O T p e r m i t t e d .

Q . 1 P e n i c i l l i n i s a d r u g t h a t c a n : ( a ) I n t e r f e r e i n t h e b i o l o g i c a l p a t h w a y o f b a c t e r i a . ( b ) A n a n t i b i o t i c t h a t c a n k i l l b a c t e r i a ( c ) B o t h ( a ) & ( b ) ( d ) N o n e o f t h e a b o v e

Q . 2 T o h e a r a d i s t i n c t e c h o t h e t i m e i n t e r v a l b e t w e e n t h e o r i g i n a l s o u n d a n d t h e r e f l e c t e d s o u n d m u s t b e ;

S e l e c t t h e c o r r e c t a n s w e r ( 1 5 X 1 = 1 5 )

( a ) 0 . 2 S ( c ) 2 S

( b ) 1 S ( d ) 0 . 1 S

Q . 3 T h e N o n - m e t a l w h i c h i s h i g h l y r e a c t i v e a n d s t o r e d u n d e r w a t e r i s : ( a ) B r o m i n e ( b ) S u l p h u r ( c ) P h o s p h o r u s ( d ) I o d i n e

Q . 4 N i t r o g e n f i x a t i o n c a n b e d o n e b y : ( a ) I n d u s t r i e s ( b ) ( c ) L i g h t n i n g ( d )

R h i z o b i u m A l l o f t h e a b o v e

Q . 5 T h e d e v i c e u s e d t o m e a s u r e t h e P u r i t y o f m i l k i s : ( a ) H y d r o m e t e r ( b ) L a c t o m e t e r ( c ) H y g o m e t e r ( d ) M a l t o m e t e r

Q . 6 T h e C r o p s w h i c h a r e g r o w n i n t h e r a i n y s e a s o n a r e c a l l e d : ( a ) R a b i C r o p s ( b ) K h a r i f C r o p s ( c ) R a i n y C r o p s ( d ) N o n e o f t h e s e

Q . 7 T h e n u m b e r o f n u c l e i P r e s e n t i n a Z y g o t e i s : ( a ) o n e ( b ) t w o ( c ) f o u r . ( d ) N o n e

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Q . 8 R a y o n i s d i f f e r e n t f r o m s y n t h e t i c f i b r e s b e c a u s e : ( a ) I t h a s a s i l k l i k e a p p e a r a n c e ( b ) I t i s o b t a i n e d f r o m w o o d P u l p ( c ) I t s f i b r e s c a n a l s o b e w o v e n l i k e o f n a t u r a l f i b r e s ( d ) N o n e o f t h e s e

Q . 9 C h o o s e t h e c o r r e c t a r r a n g e m e n t o f t h e f o r c e s d u e t o r o l l i n g , s t a t i c a n d s l i d i n g f r i c t i o n i n a d e c r e a s i n g o r d e r : ( a ) r o l l i n g , s t a t i c , s l i d i n g ( b ) r o l l i n g , s l i d i n g , s t a t i c ( c ) s t a t i c , s l i d i n g , r o l l i n g ( d ) s l i d i n g , s t a t i c r o l l i n g

Q . 1 0 T h e p r o c e s s o f t r a n s f e r r i n g o f c h a r g e f r o m a c h a r g e d b o d y t o e a r t h i s c a l l e d :

( a ) . D i s c h a r g i n g ( b ) C h a r g i n g ( c ) E a r t h i n g ( d ) N o n e o f t h e s e

Q . 1 1 T h a t p a r t o f t h e e y e w h i c h g i v e s a d i s t i n c t c o l o u r t o t h e e y e i s : ( a ) I r i s ( b ) P u p i l ( c ) C o r n e a ( d ) L e n s

Q . 1 2 G r e e n h o u s e g a s e s a r e : ( a ) C 0 2 ( b ) C H 4

( c ) C F C ( d ) A l l o f t h e a b o v e

Q . 1 3 H o t t e s t p a r t o f t h e c a n d l e f l a m e i s : ( a ) I n n e r m o s t ( b ) O u t e r m o s t ( c ) M i d d l e Z o n e ( d ) L u m i n o u s

Q . 1 4 T h o s e s p e c i e s o f p l a n t s w h i c h a r e f o u n d i n a p a r t i c u l a r a r e a a r e c a l l e d : ( a ) S p e c i e s ( b ) E n d e m i c s p e c i e s ( c ) E n d a n g e r e d s p e c i e s ( d ) N o n e o f t h e s e

Q . 1 5 A t a d p o l e d e v e l o p s i n t o a n a d u l t b y t h e p r o c e s s o f : ( a ) F e r t i l i z a t i o n ( b ) M e t a m o r p h o s i s ( c ) E m b e d d i n g ( d ) B u d d i n g

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W r i t e a n s w e r s w i t h i n t h e s p a c e p r o v i d e d u n d e r t h e q u e s t i o n s : ( 1 0 X 2 = 2 0 )

Q . 1 6 W h a t i s a c o n s t e l l a t i o n ? N a m e a n y t w o c o n s t e l l a t i o n s .

Q . 1 7 W h a t i s l a t e r a l i n v e r s i o n ? N a m e t h e m i r r o r i n w h i c h i m a g e f o r m e d u n d e r g o e s l a t e r a l I n v e r s i o n .

Q . 1 8 W h a t a r e c h e m i c a l e f f e c t s o f e l e c t r i c c u r r e n t , g i v e o n e u s e o f s u c h e f f e c t ?

Q . 1 9 W r i t e t h e d i f f e r e n c e b e t w e e n a u d i b l e a n d i n a u d i b l e s o u n d ?

Q . 2 0 W h y o b j e c t s m o v i n g i n f l u i d s m u s t h a v e s p e c i a l s h a p e s ?

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Q . 2 1 N a m e o f t h e t y p e o f f o r c e a c t i n g :

( i ) A s t r a w r u b b e d w i t h p a p e r a t t r a c t s a n o t h e r s t r a w

( i i ) A b a l l r o l l i n g a l o n g t h e g r o u n d

Q . 2 2 W h a t i s i n s u l i n , w h e r e i s i t p r o d u c e d i n t h e b o d y ?

Q . 2 3 P e t r o l e u m i s c a l l e d b l a c k g o l d , W h y ?

Q . 2 4 W h a t d o y o u m e a n b y p o l y m e r , g i v e o n e e x a m p l e o f n a t u r a l p o l y m e r ?

Q . 2 5 W h a t i s t h e r e l a t i o n b e t w e e n l o u d n e s s a n d a m p l i t u d e . I n w h i c h u n i t i s l o u d n e s s e x p r e s s e d . I f t h e a m p l i t u d e o f t h e w a v e b e c o m e s t h r i c e , w h a t c h a n g e w i l l y o u o b s e r v e i n l o u d n e s s ?

2 8

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W r i t e a n s w e r s w i t h i n t h e s p a c e p r o v i d e d u n d e r t h e q u e s t i o n s : ( 1 0 x 3 = 3 0 )

Q . 2 6 W h a t a r e a n t i b i o t i c s ? G i v e t w o e x a m p l e s .

Q . 2 7 W h a t a r e w e e d s , h o w d o t h e y a f f e c t t h e g r o w t h o f p l a n t s ?

Q . 2 8 W h a t i s p o t a b l e w a t e r a n d h o w i s w a t e r p u r i f i e d ?

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Q . 2 9 W h a t i s c l o n i n g ? W h o p e r f o r m e d i t f o r t h e f i r s t t i m e . W r i t e t h e n a m e o f f i r s t m a m m a l t h a t w a s c l o n e d ?

Q . 3 0 W h a t i s d e f o r e s t a t i o n ? W r i t e i t s c a u s e s .

Q . 3 1 L P G i s b e t t e r d o m e s t i c f u e l t h a n w o o d , w h y ?

3 0

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Q . 3 2 W h a t i s r e f i n i n g . W r i t e t h e f r a c t i o n s o f p e t r o l e u m r e f i n i n g ?

Q . 3 3 E x p l a i n t h e d i f f e r e n c e b e t w e e n t h e r m o s e t t i n g p l a s t i c s a n d t h e r m o p l a s t i c s G i v e t w o e x a m p l e s o f e a c h .

Q . 3 4 W r i t e t h r e e c o m m e r c i a l u s e s o f m i c r o - o r g a n i s m s ?

Q . 3 5 D i f f e r e n t i a t e b e t w e e n p r o k a r y o t e s a n d e u k a r y o t e s w i t h o n e e x a m p l e e a c h

3 1

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W r i t e a n s w e r s w i t h i n t h e s p a c e p r o v i d e d u n d e r t h e q u e s t i o n s .

Q . 3 6 D r a w a d i a g r a m f o r a n i m a l c e l l a n d L a b e l t h e f o l l o w i n g :-( a ) C e l l m e m b r a n e ( b ) V a c u o l e ( c ) N u c l e u s ( d ) C y t o p l a s m

( 2 x 5 = 1 0 )

Q . 3 7 ( a ) D e f i n e f o r c e , g i v e t w o e x a m p l e s o f s i t u a t i o n s i n w h i c h a p p l i e d f o r c e c a u s e s a c h a n g e i n t h e s h a p e o f a n o b j e c t ?

( b ) I n a n e x p e r i m e n t 4 . 5 k g o f f u e l w a s c o m p l e t e l y b u r n t , t h e h e a t p r o d u c e d w a s m e a s u r e d t o b e 9 0 0 0 0 K J , c a l c u l a t e t h e c a l o r i f i c v a l u e o f f u e l ?

3 2


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