Question

14) On a Fahrenheit scale
A) Boiling point of water is 212 F
B) The temperature will be equal to that on the Celsius scale at −40 C
C) The difference between the upper fixed point and the lower fixed point is divided into 180 equal parts
D) All of the above


15) Expansion of a substance on heating depends on
A) nature of the substance B) rise in temperature C) both A and B D) color of the substance


16) On a cold day, it is hard to open the lid of a tight container. But when you gently heat the neck you can easily open the lid. Why?
A) On heating glass expands and lid contracts
B) Lid expands more than the neck and thus slides easily
C) Neck becomes slippery on heating
D) Lids of the bottles cannot bear the

17) Process of change of state from gaseous state to liquid state is called
A) freezing B) sublimation C) boiling D) condensation


18) When two bodies at different temperatures are placed in thermal contact with each other, heat flows from the body at higher temperature to the body at lower temperature until them both acquire the same temperature. Assuming that there is no loss of heat to the surroundings, the heat
A) gained by the hotter body will be equal to the heat lost by the colder body
B) the heat gained by the hotter body will be less than the heat lost by the colder body
C) the heat gained by the hotter body will be greater than the heat lost by the colder body
D) the heat lost by the hotter body will be equal to the heat gained by the colder body.​

Answer 1

Answer:

14

option c

Explanation:

15 option b

16 options c

17 options c

18 options d