Q.1)-Therm is the unit of
- Power
- Heat
- Light
- Distance
Q.2)-Ice is packed in sawdst because
- Saw dust does not stick to the ice
- Saw dust will not get melt easily
- Saw dust is a good conductor of heat
- Saw dust is a poor conductor of heat
Q.3)-Water is used in hot water bags because
- It is easily available
- It is cheap and not harmful
- Its specific heat is more
- Water can be heated easily
Q.4)-Which of the following metal has the maximum thermal conductivity?
- Iron
- Aluminium
- Copper
- Silver
Q.5)-A body absorbs maximum amount of heat when it is
- Black and rough
- Black and smooth
- White and rough
- White and smooth
Q.6)-Heat of a reaction does not depend upon
- Temperature of reaction
- Path by which final product is obtained
- Physical state of product and reactant
- Reaction takes place at constant pressure or constant volume
Q.7)-In winter season water coming out of hand pumps is hot because
- In winter our body temperature remains low, so water makes us feel hot.
- Inside the earth temperature is more than the atmosphere temperature
- Due to pumping function is produced which causes heat and makes water hot
- Water comes out from the earth and gains the heat from surroundings
Q.8)-Which of the following causes more burn?
- Boiling water
- Hot water
- Steam
- None of these
Q.9)-The direction of flow of heat between any two system depends on
- Their specific heat
- Their latent heat
- Their individual temperature
- Amount of heat they contain individually
Q.10)-Due to the horizontal motion of air, transfer of heat is known as
- Advection
- Convection
- Conduction
- Radiation