Heat Test - 2...

If half of a slab of ice is covered with a white cloth and the other half is covered with a black cloth, then which of the following will be observed?

Which of the following statements is false?

Which of the statements given below are true ?

(i) In non-metals, the process of heat transfer by means of conduction is slow.
(ii) In winters, we wear woollen clothes as they cause conduction of heat from the body to the surroundings.
(iii) Cooking utensils are made of metals, so that heat can easily be conducted through their base.
(iv) The liquid used in a thermometer must be a bad conductor of heat.

Metals are good conductors of heat because

Land and Sea breezes occur along coastal areas or areas with adjacent large water bodies. Water and land have different heating abilities. Water takes a bit more time to warm up and is able to retain the heat longer than land does. These breezes take place due to

Which of the following statements is/are false ?

a. Conduction starts once the two objects or the parts of the same object have attained the same temperature.
b. Cooling coils of air conditioners are made of copper as they readily conduct away heat.
c. Heat energy does flows through bad conductors, but at a very small rate as compared to good conductors.

Match the following:

The door of a running refrigerator inside a closed room was left open. Which of the following observations will be seen?