1.

The equivalent of 161 K in degree celcius is

2.

In the vacuum flask, the vacuum between the polished walls minimizes heat transfer by

I. conduction.
II. radiation.
III. convection.

Which of the statements above are correct?

3.

The vacuum flask minimizes heat loss by

I. having a vacuum between the two surfaces.
II. polishing the two surfaces.
III. using a cork stopper.

Which of the statements above are correct?

4.

The equivalent of 161 K in degree celcius is

5.

In the vacuum flask, the vacuum between the polished walls minimizes heat transfer by

I. conduction.
II. radiation.
III. convection.

Which of the statements above are correct?

6.

The vacuum flask minimizes heat loss by

I. having a vacuum between the two surfaces.
II. polishing the two surfaces.
III. using a cork stopper.

Which of the statements above are correct?

7.

In which of the following applications is cooling by evaporation used?

I. Temperature regulation in humans
II. Cooling of water in an alcohol clay pot
III. Cooling by an air conditioner

8.

Water is not suitable as a thermometric liquid because it

I. is opaque.
II. wets glass.
III. expands abnormally.