Level 2 & Achievers Sample Questions for Class 7
Question 1
Which of the following changes are physical and irreversible?
1) Breaking of glass pot.
2) Rolling of dough.
3) Baking of cake.
4) Shredding of paper
5) Melting of ice.
A. 1,2 and 4
B. 1,2,4 and 5
C. 1 and 4
D. Only 1
Question 2
Which of the following is correct statement?
A. Soaps and detergents are bases.
B. Fruits and vegetables have inorganic acid.
C. Bases are sour in taste.
D. Acids are incorrosive.
Question 3
Identify the process that takes place in following activities:
P : Hot tea poured in the saucer.
Q : Napthalean ball disappearing in few days.
R : Spreading of hard butter on warm toast.
A. P - Evaporation, Q - Sublimation , R - Melting
B. P - Boiling, Q - Vaporization, R - Melting
C. P - Vaporization, Q - Vaporization, R - Melting
D. P - Vaporization, Q - Sublimation, R - Melting
Question 4
Which of the following is wrong?
A. Periodic change - Sunset, Non periodic change - Volcanic Eruption
B. Periodic change - Heartbeat , Non periodic change - Rotation of moon
C. Periodic change- Occurence of new moon, Non periodic change - Volcanic Eruption
D. Periodic change - Sunrise, Non periodic change : Occurence of rainbow
Question 5
Study the diagram and pick INCORRECT statement.
A. To covert electrical energy into light energy you need to close switch P
B. To covert electrical energy into heat energy you need to close switches P,S and R
C. To convert electrical energy into sound energy you need to close switches P,S and Q
D. For any type of energy conversion all switches are to be closed