What happens to ice when it is placed in open air?
a) ice loss heat
b) ice gain heat
c) ice crystallize
d) all of these
When you put hand over water which is place on heater, your hands becoming watery? Which of the following process do you think is responsible for it?
a) sublimation
b) evaporation
c) melting
d) condensation
Have you ever noticed the fog on the mirror when take a hot shower in a bathroom? Which of the following process do you think is responsible for it?
a) sublimation
b) evaporation
c) melting
d) condensation
How much percentage of the water on earth is saline?
a) 3%
b) 71%
c) 2.5%
d) 97%
Which of the following water is also called saline water?
a) fresh water
b) ice water
c) salt water
d) polluted water
Which of the following process is used to obtain salt from saline water?
a) sublimation
b) evaporation
c) melting
d) condensation
