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Page 1 T i m e : 3 H r s M M : 8 0 G E N E R A L I N S T R U C T I O N S 1 . 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 . 2 . 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 . 3 . S e p a r a t e q u e s t i o n s a r e p r o v i d e d f o r v i s u a l l y c h a l l e n g e d s t u d e n t s a g a i n s t d i a g r a m b a s e d q u e s t i o n s . 4 . D r a w d i a g r a m s w h e r e v e r n e c e s s a r y 1 . F i l l i n t h e b l a n k s : - ( 1 5 = 5 ) a . A m o e b a d i g e s t s i t s f o o d i n t h e _ _ _ _ _ _ _ _ _ _ _ _ . b . C h a n g e s i n w h i c h n e w s u b s t a n c e s a r e f o r m e d a r e c a l l e d _ _ _ _ _ _ _ _ _ _ _ _ _ c h a n g e s . c . P r o d u c t i o n o f n e w i n d i v i d u a l s f r o m t h e v e g e t a t i v e p a r t o f p l a n t i s c a l l e d _ _ _ _ _ _ _ _ _ _ _ . d . T h e m a i n e x c r e t o r y p r o d u c t i n h u m a n b e i n g s i s _ _ _ _ _ _ _ _ _ _ _ _ _ _ e . T h e b u l b g l o w s i n a c i r c u i t o n l y w h e n t h e s w i t c h i s i n t h e _ _ _ _ _ _ _ _ _ _ _ _ _ _ p o s i t i o n . 2 . T r u e o r F a l s e : - ( 1 5 = 5 ) a . T h e g a l l b l a d d e r t e m p o r a r i l y s t o r e s b i l e . b . F o r m a t i o n o f m a n u r e f r o m l e a v e s i s a p h y s i c a l c h a n g e . c . A n t h e r s a n d f i l a m e n t s a r e t w o p a r t s o f p i s t i l . d . A n e l e c t r o m a g n e t d o e s n o t a t t r a c t a p i e c e o f i r o n . e . C h e m i c a l l i k e c h l o r i n e a n d o z o n e a r e u s e d t o d i s i n f e c t w a t e r . 3 . M a t c h t h e f o l l o w i n g : - ( 1 5 = 5 ) C a r b o h y d r a t e ( i ) a s a f e t y d e v i c e t o p r e v e n t s h o r t c i r c u i t . R o s e ( i i ) I c e a n d s n o w F u s e ( i i i ) B l o c k t h e p i p e S o l i d ( i v ) S u g a r C o o k i n g o i l o r f a t s ( v ) C u t t i n g s Page 2 T i m e : 3 H r s M M : 8 0 G E N E R A L I N S T R U C T I O N S 1 . 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 . 2 . 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 . 3 . S e p a r a t e q u e s t i o n s a r e p r o v i d e d f o r v i s u a l l y c h a l l e n g e d s t u d e n t s a g a i n s t d i a g r a m b a s e d q u e s t i o n s . 4 . D r a w d i a g r a m s w h e r e v e r n e c e s s a r y 1 . F i l l i n t h e b l a n k s : - ( 1 5 = 5 ) a . A m o e b a d i g e s t s i t s f o o d i n t h e _ _ _ _ _ _ _ _ _ _ _ _ . b . C h a n g e s i n w h i c h n e w s u b s t a n c e s a r e f o r m e d a r e c a l l e d _ _ _ _ _ _ _ _ _ _ _ _ _ c h a n g e s . c . P r o d u c t i o n o f n e w i n d i v i d u a l s f r o m t h e v e g e t a t i v e p a r t o f p l a n t i s c a l l e d _ _ _ _ _ _ _ _ _ _ _ . d . T h e m a i n e x c r e t o r y p r o d u c t i n h u m a n b e i n g s i s _ _ _ _ _ _ _ _ _ _ _ _ _ _ e . T h e b u l b g l o w s i n a c i r c u i t o n l y w h e n t h e s w i t c h i s i n t h e _ _ _ _ _ _ _ _ _ _ _ _ _ _ p o s i t i o n . 2 . T r u e o r F a l s e : - ( 1 5 = 5 ) a . T h e g a l l b l a d d e r t e m p o r a r i l y s t o r e s b i l e . b . F o r m a t i o n o f m a n u r e f r o m l e a v e s i s a p h y s i c a l c h a n g e . c . A n t h e r s a n d f i l a m e n t s a r e t w o p a r t s o f p i s t i l . d . A n e l e c t r o m a g n e t d o e s n o t a t t r a c t a p i e c e o f i r o n . e . C h e m i c a l l i k e c h l o r i n e a n d o z o n e a r e u s e d t o d i s i n f e c t w a t e r . 3 . M a t c h t h e f o l l o w i n g : - ( 1 5 = 5 ) C a r b o h y d r a t e ( i ) a s a f e t y d e v i c e t o p r e v e n t s h o r t c i r c u i t . R o s e ( i i ) I c e a n d s n o w F u s e ( i i i ) B l o c k t h e p i p e S o l i d ( i v ) S u g a r C o o k i n g o i l o r f a t s ( v ) C u t t i n g s V e r y S h o r t A n s w e r T y p e Q u e s t i o n ( 1 5 = 5 ) 4 . W r i t e t h e n a m e o f l a r g e s t g l a n d i n o u r b o d y . 5 . W h a t a r e t h e t w o p a r t s o f s t a m e n ? 6 . N a m e 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 d i s t a n c e . 7 . N a m e a n y t w o d e v i c e s i n w h i c h b a t t e r y i s u s e d . 8 . W h a t a r e t h e m a i n s o u r c e s o f w a t e r o n e a r t h ? S h o r t A n s w e r T y p e I ( 2 8 = 1 6 ) 9 . W h a t a r e r u m i n a n t a n i m a l s ? G i v e n a n e x a m p l e ? 1 0 . W h a t i s a c h e m i c a l c h a n g e ? G i v e a n e x a m p l e . 1 1 . 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 s e x u a l a n d s e x u a l m o d e o f r e p r o d u c t i o n w i t h e x a m p l e . 1 2 . T h e d i s t a n c e b e t w e e n t w o s t a t i o n s i s 2 4 0 K m . A t r a i n t a k e s 4 h o u r s t o c o v e r t h i s d i s t a n c e . C a l c u l a t e t h e s p e e d o f t h e t r a i n . 1 3 . N a m e a n y t w o e f f e c t s o f e l e c t r i c c u r r e n t . 1 4 . E x p l a i n , h o w g r o u n d w a t e r i s r e c h a r g e d ? 1 5 . W h a t a r e d e c o m p o s e r s ? N a m e a n y t w o o f t h e m . 1 6 . W r i t e t h e f u n c t i o n o f B a r S c r e e n i n a w a s t e w a t e r t r e a t m e n t p l a n t . S h o r t A n s w e r T y p e I I ( 3 8 = 2 4 ) 1 7 . W h e r e i s t h e b i l e p r o d u c e d a n d s t o r e d ? W h i c h c o m p o n e n t o f t h e f o o d d o e s i t h e l p t o d i g e s t ? 1 8 . W h e n b a k i n g s o d a i s m i x e d w i t h l e m o n j u i c e b u b b l e s a r e f o r m e d w i t h t h e e v o l u t i o n o f g a s . W h a t t y p e o f c h a n g e i t i s . E x p l a i n . 1 9 . W h y i s t r a n s p o r t o f m a t e r i a l n e c e s s a r y i n a p l a n t o r a n a n i m a l ? E x p l a i n . 2 0 . W h a t i s p o l l i n a t i o n ? E x p l a i n t w o t y p e s o f p o l l i n a t i o n s . 2 1 . 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 c o n d u c t o r a n d i n s u l a t o r . G i v e a n e x a m p l e o f e a c h . 2 2 . S t a t e t h e c h a r a c t e r i s t i c s o f t h e i m a g e f o r m e d b y a p l a n e m i r r o r . 2 3 . E x p l a i n t h e f a c t o r s r e s p o n s i b l e f o r d e p l e t i o n o f w a t e r t a b l e . 2 4 . W h a t i s s e w a g e ? E x p l a i n w h y i t i s h a r m f u l t o d i s c h a r g e u n t r e a t e d s e w a g e i n t o r i v e r . L o n g A n s w e r T y p e Q u e s t i o n ( 5 4 = 2 0 ) 2 5 . D r a w a d i a g r a m o f h u m a n e x c r e t o r y s y s t e m a n d l a b e l t h e v a r i o u s p a r t s . Page 3 T i m e : 3 H r s M M : 8 0 G E N E R A L I N S T R U C T I O N S 1 . 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 . 2 . 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 . 3 . S e p a r a t e q u e s t i o n s a r e p r o v i d e d f o r v i s u a l l y c h a l l e n g e d s t u d e n t s a g a i n s t d i a g r a m b a s e d q u e s t i o n s . 4 . D r a w d i a g r a m s w h e r e v e r n e c e s s a r y 1 . F i l l i n t h e b l a n k s : - ( 1 5 = 5 ) a . A m o e b a d i g e s t s i t s f o o d i n t h e _ _ _ _ _ _ _ _ _ _ _ _ . b . C h a n g e s i n w h i c h n e w s u b s t a n c e s a r e f o r m e d a r e c a l l e d _ _ _ _ _ _ _ _ _ _ _ _ _ c h a n g e s . c . P r o d u c t i o n o f n e w i n d i v i d u a l s f r o m t h e v e g e t a t i v e p a r t o f p l a n t i s c a l l e d _ _ _ _ _ _ _ _ _ _ _ . d . T h e m a i n e x c r e t o r y p r o d u c t i n h u m a n b e i n g s i s _ _ _ _ _ _ _ _ _ _ _ _ _ _ e . T h e b u l b g l o w s i n a c i r c u i t o n l y w h e n t h e s w i t c h i s i n t h e _ _ _ _ _ _ _ _ _ _ _ _ _ _ p o s i t i o n . 2 . T r u e o r F a l s e : - ( 1 5 = 5 ) a . T h e g a l l b l a d d e r t e m p o r a r i l y s t o r e s b i l e . b . F o r m a t i o n o f m a n u r e f r o m l e a v e s i s a p h y s i c a l c h a n g e . c . A n t h e r s a n d f i l a m e n t s a r e t w o p a r t s o f p i s t i l . d . A n e l e c t r o m a g n e t d o e s n o t a t t r a c t a p i e c e o f i r o n . e . C h e m i c a l l i k e c h l o r i n e a n d o z o n e a r e u s e d t o d i s i n f e c t w a t e r . 3 . M a t c h t h e f o l l o w i n g : - ( 1 5 = 5 ) C a r b o h y d r a t e ( i ) a s a f e t y d e v i c e t o p r e v e n t s h o r t c i r c u i t . R o s e ( i i ) I c e a n d s n o w F u s e ( i i i ) B l o c k t h e p i p e S o l i d ( i v ) S u g a r C o o k i n g o i l o r f a t s ( v ) C u t t i n g s V e r y S h o r t A n s w e r T y p e Q u e s t i o n ( 1 5 = 5 ) 4 . W r i t e t h e n a m e o f l a r g e s t g l a n d i n o u r b o d y . 5 . W h a t a r e t h e t w o p a r t s o f s t a m e n ? 6 . N a m e 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 d i s t a n c e . 7 . N a m e a n y t w o d e v i c e s i n w h i c h b a t t e r y i s u s e d . 8 . W h a t a r e t h e m a i n s o u r c e s o f w a t e r o n e a r t h ? S h o r t A n s w e r T y p e I ( 2 8 = 1 6 ) 9 . W h a t a r e r u m i n a n t a n i m a l s ? G i v e n a n e x a m p l e ? 1 0 . W h a t i s a c h e m i c a l c h a n g e ? G i v e a n e x a m p l e . 1 1 . 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 s e x u a l a n d s e x u a l m o d e o f r e p r o d u c t i o n w i t h e x a m p l e . 1 2 . T h e d i s t a n c e b e t w e e n t w o s t a t i o n s i s 2 4 0 K m . A t r a i n t a k e s 4 h o u r s t o c o v e r t h i s d i s t a n c e . C a l c u l a t e t h e s p e e d o f t h e t r a i n . 1 3 . N a m e a n y t w o e f f e c t s o f e l e c t r i c c u r r e n t . 1 4 . E x p l a i n , h o w g r o u n d w a t e r i s r e c h a r g e d ? 1 5 . W h a t a r e d e c o m p o s e r s ? N a m e a n y t w o o f t h e m . 1 6 . W r i t e t h e f u n c t i o n o f B a r S c r e e n i n a w a s t e w a t e r t r e a t m e n t p l a n t . S h o r t A n s w e r T y p e I I ( 3 8 = 2 4 ) 1 7 . W h e r e i s t h e b i l e p r o d u c e d a n d s t o r e d ? W h i c h c o m p o n e n t o f t h e f o o d d o e s i t h e l p t o d i g e s t ? 1 8 . W h e n b a k i n g s o d a i s m i x e d w i t h l e m o n j u i c e b u b b l e s a r e f o r m e d w i t h t h e e v o l u t i o n o f g a s . W h a t t y p e o f c h a n g e i t i s . E x p l a i n . 1 9 . W h y i s t r a n s p o r t o f m a t e r i a l n e c e s s a r y i n a p l a n t o r a n a n i m a l ? E x p l a i n . 2 0 . W h a t i s p o l l i n a t i o n ? E x p l a i n t w o t y p e s o f p o l l i n a t i o n s . 2 1 . 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 c o n d u c t o r a n d i n s u l a t o r . G i v e a n e x a m p l e o f e a c h . 2 2 . S t a t e t h e c h a r a c t e r i s t i c s o f t h e i m a g e f o r m e d b y a p l a n e m i r r o r . 2 3 . E x p l a i n t h e f a c t o r s r e s p o n s i b l e f o r d e p l e t i o n o f w a t e r t a b l e . 2 4 . W h a t i s s e w a g e ? E x p l a i n w h y i t i s h a r m f u l t o d i s c h a r g e u n t r e a t e d s e w a g e i n t o r i v e r . L o n g A n s w e r T y p e Q u e s t i o n ( 5 4 = 2 0 ) 2 5 . D r a w a d i a g r a m o f h u m a n e x c r e t o r y s y s t e m a n d l a b e l t h e v a r i o u s p a r t s . F o r b l i n d s t u d e n t s ( i n p l a c e o f d i a g r a m q u e s t i o n ) a . W r i t e d i f f e r e n t p a r t s o f e x c r e t o r y s y s t e m . b . W r i t e t h e f u n c t i o n o f a n y t h r e e p a r t s . 2 6 . a . D e f i n e a s t r a i g h t l i n e , c i r c u l a r a n d p e r i o d i c m o t i o n . b . G i v e a n y t w o e x a m p l e s o f p e r i o d i c m o t i o n . 2 7 . a . S t a t e d i f f e r e n c e s b e t w e e n a r e a l a n d v i r t u a l i m a g e . b . W h i c h l e n s i s u s e d a s r e a d i n g g l a s s e s ? c . G i v e o n e u s e e a c h o f c o n c a v e a n d c o n v e x m i r r o r . 2 8 . E x p l a i n t h e r o l e o f f o r e s t i n m a i n t a i n i n g t h e b a l a n c e b e t w e e n o x y g e n a n d c a r b o n d i o x i d e i n t h e a t m o s p h e r e .Read More
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FAQs on Class 7 Science: CBSE Past Year Paper - 2 - Science Class 7
| 1. What is CBSE Class 7 Science Past Year Paper-2? |  |
Ans. CBSE Class 7 Science Past Year Paper-2 is a question paper that was given to students as a part of their Science exam. It contains a set of questions related to various topics that are covered in the CBSE Class 7 Science syllabus.
| 2. What is the importance of solving past year papers? | |
Ans. Solving past year papers is considered an important step in exam preparation as it helps students to understand the exam pattern, marking scheme, and the type of questions that are generally asked in the exam. It also helps students to identify their strengths and weaknesses and work on them accordingly.
| 3. What are the topics covered in CBSE Class 7 Science syllabus? | |
Ans. The CBSE Class 7 Science syllabus covers various topics such as Nutrition in Plants and Animals, Heat, Motion and Time, Physical and Chemical Changes, Electricity and Circuits, Reproduction in Plants and Animals, etc.
| 4. How can students prepare for the CBSE Class 7 Science exam? | |
Ans. Students can prepare for the CBSE Class 7 Science exam by following the NCERT textbook, solving past year papers, taking mock tests, and practicing sample papers. They should also focus on understanding the concepts and theories thoroughly.
| 5. What is the marking scheme for CBSE Class 7 Science exam? | |
Ans. The CBSE Class 7 Science exam is of 80 marks, out of which 20 marks are for Internal Assessment. The theory paper is of 60 marks, and the practical exam is of 20 marks. The theory paper consists of objective type questions, short answer questions, and long answer questions.
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