Heat Test

Result

Heat Test - 33

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Weekly Quiz Competition

Question 1
1 / -0

Mark correct option or options :

A
Sun temperature is measured by radiation pyrometer

B
Insect temperature is measured by thermocouple thermometer

C
Moon's temperature is measured by thermometer

D
Both A and B

Solution
Question 2
1 / -0

Figure (a, b, c, d) shows a student reading a doctor's thermometer. Which of the figure indicates the correct method of reading temperature?

A

B

C

D

Solution

The correct way of reading the thermometer is to keep is horizontal direct infront of the eyes and observe the temperature reading. The correct option for reading the thermometer is shown in option A.
Question 3
1 / -0

All bodies radiate heat at all temperature except at

A
$$0^0C$$

B
$$100^0C$$

C
$$0K$$

D
Absolute temperature

Solution
Question 4
1 / -0

A beggar wrapped himself with a few layers of newspaper on a cold winter night. This helped him to keep himself warm because

A
Friction between the layers of newspaper produces heat.

B
Air trapped between the layers of newspaper is a bad conductor of heat.

C
Newspaper is a conductor of heat.

D
Newspaper is at a higher temperature than the temperature of the surrounding.

Solution

The correct answer is option (b) Air trapped among the layers of newspaper is a poor conductor of heat. So. this helps him to keep himself warm.
Question 5
1 / -0

The standard fixed point for temperature measurement is used these days is :

A
melting point of ice at S.T.P.

B
that temperature at which ice, water and water vapour coexist

C
that temperature at which pure ice and pure water coexist

D
none of the above

Solution

(B)The triple point of a substance is unique, i.e. it occurs at one particular set of values of pressure and temperature. The melting point of ice and boiling point of water are not unique. They change with change in value of pressure or due to the presence of impurities in water.
Question 6
1 / -0

Four arrangements to measure temperature of ice in beaker with laboratory thermometer are shown in Figure (a. b. c and d).
Which one of them shows the correct arrangement for accurate measurement of temperature?

A

B

C

D

Solution

We know that the clinical thermometer should be held straight without any bend and should be kept inside that substance completely so that bulb can take the right measurements so this criterion is satisfied by the fig (a) and (b).

But the clinical thermometer should not touch the surface but we see that in fig (b), thermometer touches the bottom surface which is not correct as it leads to faulty measurement value so fig a is the correct choice.
Question 7
1 / -0

Select the correct alternative
The symbol of degree Celsius is

A
$$^\circ C$$

B
$$^\circ F$$

C
$$K$$

D
$$^\circ K$$

Solution

The symbol of degree Celsius is

$$^\circ C$$
Option A.
Question 8
1 / -0

Figure (a, b, c, d) shows the readings on four different thermometers. Indicate which of the reading shows the normal human body temperature?

A

B

C

D

Solution

The correct answer is option (c). The normal human body temperature is $$37^{o}C$$.
Question 9
1 / -0

A thermometer is graduated in:

A
Kelvin

B
$$^\circ C$$

C
$$g$$

D
$$cm$$

Solution

The thermometer is a device that measures temperature. Its graduation is done in $$^{\circ}C$$ or Fahrenheits.
Question 10
1 / -0

Choose the correct alternative:
In the process of convection, heat travels

A
sideways

B
downwards

C
upwards

D
in all direction

Solution

In the process of convection, heat travels upwards.