Page 1 - 4. HOME ASSIGNMENT- EFFECT OF PRESSURE ON STATES OF MATTER

SAI International School
Class-IX
Subject-Chemistry
Topic-Matter in our surroundings
Sub topic- Effect of pressure on states of matter
OBJECTIVE QUESTIONS
Q.1 Gases can be easily liquefied by applying
a) high temperature and low pressure.
b) high pressure and low temperature.
c) high temperature keeping pressure constant.
d) high pressure keeping temperature constant.
Q.2 . What happens to a liquid on applying pressure?
a) It changes into gas
b) it changes into a solid
c) its state remains same
d) None of the above
Q.3 On applying pressure the inter molecular space:
a) decreases
b) increases
c) sometimes increases sometimes decreases
d) pressure has no effect on inter molecular space.
Q.4 On applying pressure the inter molecular forces:
a) increase
b) decrease
c) sometimes increase some times decrease
d) none of the above.
Q.5 Gases exert pressure on the walls of the container in which they are stored
due to:
a) constant collision of its molecules on the walls of the container
b) constant collision of its molecules with each other.
c) Both (a) and (b) are correct.
d) both (a) and (b) are false.
Q.6 Dry ice can be prepared from Carbon dioxide by:
a) Increasing the pressure
b) decreasing the pressure
c) increasing the pressure and decreasing the temperature.
d) increasing the temperature and decreasing the pressure.
Q.7 When air is taken in an injection syringe and compressed the
a) inter molecular space decreases
b) inter molecular space increases
c) Inter molecular forces decrease.
d) none of the above
Q.8 Solid CO2 is used in theaters to

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