An iron ball at 40°C is dropped in a mug containing water at 40°C. The heat will

1

(a)

flow from iron ball to water

(b)

not flow from iron ball to water or from water to iron ball

(c)

flow from water to iron ball

(d)

increase the temperature of both

A wooden spoon is dipped in a cup of icecream, then its other end

1

(a)

becomes cold by the process of conduction

(b)

becomes cold by the process of convection

(c)

becomes cold by the process of radiation

(d)

does not become cold

Stainless steel pans are usually provided with copper bottoms. The reason for this could be that

1

(a)

copper bottom makes the pan more durable

(b)

such pans appear colourful

(c)

copper is a better conductor of heat than the stainless steel

(d)

copper is easier to clean than the stainless steel

Heat is a form of:

1

(a)

Energy

(b)

Light

(c)

Electricity

(d)

Work

Cooking utensils are made of metals because they are:

1

(a)

Durable

(b)

Malleable

(c)

Good conductors of heat

(d)

Do not break on heating

Temperature is the measure of _____ of an object.

1

(a)

hotness

The thermometer used to measure human body temperature is called ______ thermometer.

1

(a)

clinical

__________ has highest specific heat.

1

(a)

water

Heat flows from a _________ surface to________surface.

1

(a)

hotter, colder

The three modes of heat transfer are radiation ________ and conduction.

1

(a)

convection

Our sense of touch about hotness or coldness is not always reliable

1

(a) False

(b) True

Normal temperature of human body is 98.6°C.

1

(a) True

(b) False

In all cases, heat flows from a hotter object to a colder object.

1

(a) False

(b) True

Water at higher temperature feels more hot.

1

(a) False

(b) True

Marking on clinical thermometer is from 0⁰C to 100⁰C.

1

(a) True

(b) False

What is clinical thermometer?

1

(a)

The thermometer which is used to measure our body temperature is called clinical thermometer.

Name another type of thermometer.

1

(a)

Celsius thermometer.

Which metal is used in the bulb of thermometer?

1

(a)

Mercury (Hg).

What is the SI unit of temperature.

1

(a)

Kelvin.

Name the three modes of transfer of heat.

1

(a)

Conduction, convection and radiation.