State similarities and differences between the laboratory thermometer and the clinical thermometer.

3

(a)

Give two examples each of conductors and insulators of heat.

3

(a)

The handle of a pressure cooker is covered with the thick plastic. Explain why.

3

(a)

Differentiate between two modes of transfer of heat, i.e. convection and conduction.

3

(a)

The freezer is located at the top of the refrigerator. Explain why.

3

(a)

Instead of water explain the reason, why do the mercury is used in the thermometer?

3

(a)

Explain the reason for serving of tea in China clay cup and plates.

3

(a)

Describe briefly about the direction of the convection current during ventilation.

3

(a)

Explain the reason for wrapping of ice in gunny bags.

3

(a)

Describe the mode of heat transfer in water or gases.

3

(a)

Enumerate the precautions to be taken while reading a clinical thermometer.

3

(a)

Show that water is a bad conductor of heat.

3

(a)

Show that air transfers heat via convection.

3

(a)

Why is the handle of a metallic kettle covered with strips of cane?

3

(a)

What precautions are needed while reading a laboratory thermometer?

3

(a)