Class 7 Science: Sample Question Paper - 2 | Science Class 7 PDF Download

 Page 1


 
 
 
 
 
General Instructions : 
CLASS-VII 
 
SCIENCE 
 
 
1.  Marks for each q11estion are indicated against it. 
2.  Attempt all the questions in proper sequence. 
3.  Draw neat diagrams wherever required. 
 
 
 
 
1.  Answer the following  questions. 
 
(i)  What type  of  soil  is required for  growing Paddy? 
(lx10=10) 
 
(ii)  Name an organism  which  breathes through  its skin  as well as the  lungs. 
(iii)  What conclusion  can  be drawn from Newton's  Disc? 
(iv) Define  pollination. 
 
(v)  Draw the  symbol  for the following : 
(a) Switch  in 'ON' position 
(b) An electric  Bulb 
 
(vi) What  is the function  of contact  screw  in an electric  bell? 
(vii) Name  the  process of seeping  water  into the soil. 
(viii) Name any  two  water borne diseases. 
 
(ix) Name the instrument  used to amplify  the sound of  human heart. 
(x)  What will  happen  if there are no  platelets in our blood? 
 
2.  Explain what  would  happen  if a potted plant is over  watered?  (Yl+l Yr=2) 
 
3.  An electrician is carrying out some repairs in your house. He wants to replace a fuse by a 
piece of wire. Would you  agree? Give reasons for  your  response.  (Yl+1Y2=2) 
4.  What is the relationship  between  your  heart beat and  pulse rate?  (2) 
5.  Calculate the rate of percolation if it takes 45 min for 180
..
mI water to percolate through the 
given soil sample.  (I+1=2) 
6.  What is the use of pumping air into the clarified water in a waste water treatment plant? 
Why it is done?  (1+1-2) 
7.  Write any two  advantages  of vegetative  propagation in  plants.  (1+1=2) 
 
P.T.O. 
Page 2


 
 
 
 
 
General Instructions : 
CLASS-VII 
 
SCIENCE 
 
 
1.  Marks for each q11estion are indicated against it. 
2.  Attempt all the questions in proper sequence. 
3.  Draw neat diagrams wherever required. 
 
 
 
 
1.  Answer the following  questions. 
 
(i)  What type  of  soil  is required for  growing Paddy? 
(lx10=10) 
 
(ii)  Name an organism  which  breathes through  its skin  as well as the  lungs. 
(iii)  What conclusion  can  be drawn from Newton's  Disc? 
(iv) Define  pollination. 
 
(v)  Draw the  symbol  for the following : 
(a) Switch  in 'ON' position 
(b) An electric  Bulb 
 
(vi) What  is the function  of contact  screw  in an electric  bell? 
(vii) Name  the  process of seeping  water  into the soil. 
(viii) Name any  two  water borne diseases. 
 
(ix) Name the instrument  used to amplify  the sound of  human heart. 
(x)  What will  happen  if there are no  platelets in our blood? 
 
2.  Explain what  would  happen  if a potted plant is over  watered?  (Yl+l Yr=2) 
 
3.  An electrician is carrying out some repairs in your house. He wants to replace a fuse by a 
piece of wire. Would you  agree? Give reasons for  your  response.  (Yl+1Y2=2) 
4.  What is the relationship  between  your  heart beat and  pulse rate?  (2) 
5.  Calculate the rate of percolation if it takes 45 min for 180
..
mI water to percolate through the 
given soil sample.  (I+1=2) 
6.  What is the use of pumping air into the clarified water in a waste water treatment plant? 
Why it is done?  (1+1-2) 
7.  Write any two  advantages  of vegetative  propagation in  plants.  (1+1=2) 
 
P.T.O. 
8.  Name the mirror  which  is : 
 
(a)  Used  in  headlights  of a car 
 
(b)  Used  by dentists  to see enlarged  image  of  the tooth 
 
(c)  Used as  rear view  mirror  in vehicles 
 
d)  Used  in dressing  table  
( + + +'l-2=2) 
9.  Explain  as  to why  breathing  rate of a person  increases  while  doing  heavy  exercise? 
(2) 
 
10.  What  is drip  irrigation?  (2) 
11.  Name  the red  pigment  present  in our  blood.  \What is its function? (1+1  2) 
 
12.  Which layer of soil profile support the growth of plants? Mention any two characteristics of 
this layer.  (1+2=3) 
13.  \Vrite the word  equation  for  the following  : 
 
(a) Anaerobic  respiration  in human  muscle  cells 
 
(b)  Anaerobic  respiration  in Yeast  (1Yl+l3) 
14.  Name the vascular tissue which helps in transport of water and nutrients in plants. Explain 
how  water  reaches  to  leaves of tall  trees?                                                                (1+2=3) 
15.   How are the seeds of following plants dispersed? \Write the characteristic features of these 
seeds  which  help  in  their  dispersal  respectively.                                                 (i+l+1=3) 
(1) Madar                                     (2) Coconut                                  (3)  Xanthium 
16.  What are electromagnets? Give any two uses of electromagnets in our daily life.  (1+2=3) 
 
17.  (a) What kind of image is formed by a convex lens if an object is placed too close to it? 
 
(b) What kind of  image is formed  by a concave  lens?  (1Y2+1Yz:::;:3) 
18.  Name the method  of asexual  reproduction  in Yeast. Represent  it . with the help of a well 
labelled diagram.  (1+2=3) 
19.  (a) What are decomposers? 
(b)  Give examples  of  any  two  decomposers. 
(c)  \\-'hat role  do  they  play  in a forest? 
 
(1+1+1=3) 
20.  Give  three differences  between  sandy  and  clayey  soil.  (1.+1+1=3) 
21.  Give  reason as  to  why  water  does  not stagnate  in forests  after  a heavy  rainfall?  (3) 
22.   (a)  What  is the  importance  of  the  presence  of  tough  protective  coat  in : (2+1+2=5) 
 
(1) Spores 
 
(2)  Pollen  Grains  
•
 
(b) Give two-examples of organisms  which  reproduce  by spore  formation. 
(c) Draw a well labelled diagram to show the female reproducti ve part of a flower. 
 
 
  
Page 3


 
 
 
 
 
General Instructions : 
CLASS-VII 
 
SCIENCE 
 
 
1.  Marks for each q11estion are indicated against it. 
2.  Attempt all the questions in proper sequence. 
3.  Draw neat diagrams wherever required. 
 
 
 
 
1.  Answer the following  questions. 
 
(i)  What type  of  soil  is required for  growing Paddy? 
(lx10=10) 
 
(ii)  Name an organism  which  breathes through  its skin  as well as the  lungs. 
(iii)  What conclusion  can  be drawn from Newton's  Disc? 
(iv) Define  pollination. 
 
(v)  Draw the  symbol  for the following : 
(a) Switch  in 'ON' position 
(b) An electric  Bulb 
 
(vi) What  is the function  of contact  screw  in an electric  bell? 
(vii) Name  the  process of seeping  water  into the soil. 
(viii) Name any  two  water borne diseases. 
 
(ix) Name the instrument  used to amplify  the sound of  human heart. 
(x)  What will  happen  if there are no  platelets in our blood? 
 
2.  Explain what  would  happen  if a potted plant is over  watered?  (Yl+l Yr=2) 
 
3.  An electrician is carrying out some repairs in your house. He wants to replace a fuse by a 
piece of wire. Would you  agree? Give reasons for  your  response.  (Yl+1Y2=2) 
4.  What is the relationship  between  your  heart beat and  pulse rate?  (2) 
5.  Calculate the rate of percolation if it takes 45 min for 180
..
mI water to percolate through the 
given soil sample.  (I+1=2) 
6.  What is the use of pumping air into the clarified water in a waste water treatment plant? 
Why it is done?  (1+1-2) 
7.  Write any two  advantages  of vegetative  propagation in  plants.  (1+1=2) 
 
P.T.O. 
8.  Name the mirror  which  is : 
 
(a)  Used  in  headlights  of a car 
 
(b)  Used  by dentists  to see enlarged  image  of  the tooth 
 
(c)  Used as  rear view  mirror  in vehicles 
 
d)  Used  in dressing  table  
( + + +'l-2=2) 
9.  Explain  as  to why  breathing  rate of a person  increases  while  doing  heavy  exercise? 
(2) 
 
10.  What  is drip  irrigation?  (2) 
11.  Name  the red  pigment  present  in our  blood.  \What is its function? (1+1  2) 
 
12.  Which layer of soil profile support the growth of plants? Mention any two characteristics of 
this layer.  (1+2=3) 
13.  \Vrite the word  equation  for  the following  : 
 
(a) Anaerobic  respiration  in human  muscle  cells 
 
(b)  Anaerobic  respiration  in Yeast  (1Yl+l3) 
14.  Name the vascular tissue which helps in transport of water and nutrients in plants. Explain 
how  water  reaches  to  leaves of tall  trees?                                                                (1+2=3) 
15.   How are the seeds of following plants dispersed? \Write the characteristic features of these 
seeds  which  help  in  their  dispersal  respectively.                                                 (i+l+1=3) 
(1) Madar                                     (2) Coconut                                  (3)  Xanthium 
16.  What are electromagnets? Give any two uses of electromagnets in our daily life.  (1+2=3) 
 
17.  (a) What kind of image is formed by a convex lens if an object is placed too close to it? 
 
(b) What kind of  image is formed  by a concave  lens?  (1Y2+1Yz:::;:3) 
18.  Name the method  of asexual  reproduction  in Yeast. Represent  it . with the help of a well 
labelled diagram.  (1+2=3) 
19.  (a) What are decomposers? 
(b)  Give examples  of  any  two  decomposers. 
(c)  \\-'hat role  do  they  play  in a forest? 
 
(1+1+1=3) 
20.  Give  three differences  between  sandy  and  clayey  soil.  (1.+1+1=3) 
21.  Give  reason as  to  why  water  does  not stagnate  in forests  after  a heavy  rainfall?  (3) 
22.   (a)  What  is the  importance  of  the  presence  of  tough  protective  coat  in : (2+1+2=5) 
 
(1) Spores 
 
(2)  Pollen  Grains  
•
 
(b) Give two-examples of organisms  which  reproduce  by spore  formation. 
(c) Draw a well labelled diagram to show the female reproducti ve part of a flower. 
 
 
  
23.  (a) What is a Diaphragm?  (1+2+2=5) 
(b) What is the position of ribs and diaphragm during  inhalation? 
(c) Define Exhalation.  What happens  to the size of chest  cavity  during  exhalation? 
 
24.  (a) Observe the diagram given below. Name the various parts labelled as A, B, C and D. 
·    (Do not  draw  the diagram) 
(2+2+1=5) 
 
 
 
 
(b)  What is the function  of the  parts  labelled as A and  D respectively. 
(c) Give the  location of  human heart. 
25.  Explain how the increased demand for construction of houses, shops, offices, roads and 
pavements affects the water  table.  (S)