Heat and Its Effects Test

Result

Heat and Its Effects Test - 1

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

Which of the following statements is incorrect regarding the effects of heat?

A
When heat is added to a substance, its temperature increases.

B
When heat is extracted from a substance, its temperature decreases.

C
When heat is added to a solid at its melting point, it is converted into a liquid.

D
When heat is extracted from a liquid at its boiling point, it is converted into a gas.

Solution

When heat is added to a substance, its temperature increases, whereas, on extracting heat, its temperature decreases. Heating a solid at its melting point converts it into a liquid, and heating a liquid at its boiling point, converts it into a gas. Thus, the statement in the option D is incorrect.
Question 2
1 / -0

A bimetallic strip is not used in

A
a refrigerator

B
an electrical fuse

C
an automatic fire alarm

D
a temperature control system

Solution

A bimetallic strip is not used in an electric fuse.
Question 3
1 / -0

Use the following information to answer the question.

A tight metal lid on a glass container seems difficult to open, but it opens easily if hot water is run over the lid.

Which is the correct reason for the given statement?

A
The metal lid expands more than the glass container on heating.

B
The glass container expands more than the metal lid on heating.

C
The metal lid and the glass container expand equally on heating.

D
The glass container contracts whereas the metal lid remains unaffected on heating.

Solution

A tight metal lid on a glass container seems difficult to open, but it opens easily if hot water is run over the lid, because the metal lid expands more than the glass container on heating.
Question 4
1 / -0

Use the following information to answer the next question.

After a hot day, Radha saw her mother sprinkle water in the evening on the roof and in the open area of her house. After sometime, Radha felt that the house was much cooler than before.

Radha’s observation can be explained using which process?

A
Evaporation

B
Condensation

C
Increase in humidity

D
Change in pressure

Solution

During summers, the roof of a house becomes very hot after noon. When water is sprinkled, it absorbs heat from the roof and gets converted into water vapours. The temperature of the roof decreases because of the loss of this heat. Thus, Radha’s observation can be explained through evaporation.
Question 5
1 / -0

Water is boiled at three different places, X, Y and Z, whose altitudes are 400 ft, 1200 ft and 3000 ft above sea level, respectively. Boiling point of the water is observed at all the three places. Which of the following shows the correct observation?

A
Boiling point of water is highest is at X.

B
Boiling point of water is highest is at Y.

C
Boiling point of water is highest is at Z.

D
Boiling point of water is highest is same at all the places.

Solution

Atmospheric pressure decreases with height. As boiling point of a liquid decreases with decrease in atmospheric pressure, thus the boiling point of water is highest at 400 ft and lowest at 3000 ft.