Question

20) Conduction is possible
A) when the bodies are apart from each other
B) when the bodies have same temperature and in thermal contact
C) when they have different temperatures maintaining distance between them
D) bodies should be in contact and should have different temperatures


21) Cups are not made of metals. The reason is
A) metals are good conductors B) metals are bad conductors C) metals are expensive
D) None of the above


22) Which of the following statement(s) is/are correct?
A) Temperature is a measure of total amount of heat contained in an object.
B) Temperature is a measure of degree of hotness or coldness of a body.
C) Both the above are correct
D) None of the above is correct


23) It is a reliable measure of degree of hotness of an object. It is
A) heat B) temperature C) Both of these D) None of these


24) The movement of cold air from sea towards land during daytime is called
A) air breeze B) sea breeze C) land breeze D) None of these


25) Why stainless steel pans are generally provided with copper bottoms?
A) Copper bottom makes the pan more durable
B) Copper bottom makes the pan appear beautiful
C) Copper is a better conductor of heat than steel
D) Copper can be cleaned more easily as compared to steel


26) In places of hot climate it is advised that the outer walls of houses be painted white.
A) White color is good reflector. So the heat falling on the wall gets reflected and wall is not heated
B) White makes the wall look beautiful
C) Other colors will be expensive
D) None of the above






27) What do you mean by heat?
A) Heat is a measure of temperature.
B) Heat is a form of potential.
C) It is form of energy which gets transferred from a hot to a cold body.
D) None of the above.


28) Which of the following pairs may give equal numerical values of the temperature of a body?
A) Fahrenheit and Celsius B) Celsius and Kelvin C) Kelvin and Platinum D) None of these


29) On which of the following scales of temperature, the temperature is never negative?
A) Celsius B) Fahrenheit C) Reamer D) Kelvin


30) The smallest and old unit of heat energy is:
A) Calorie B) kelvin C) Joule D) none of the above​

Answer 1

Conduction is possible

A) when the bodies are apart from each other

B) when the bodies have same temperature and in thermal contact

C) when they have different temperatures maintaining distance between them

D) bodies should be in contact and should have different temperatures

21) Cups are not made of metals. The reason is

A) metals are good conductors B) metals are bad conductors C) metals are expensive

D) None of the above

22) Which of the following statement(s) is/are correct?

A) Temperature is a measure of total amount of heat contained in an object.

B) Temperature is a measure of degree of hotness or coldness of a body.

C) Both the above are correct

D) None of the above is correct

23) It is a reliable measure of degree of hotness of an object. It is

A) heat B) temperature C) Both of these D) None of these