Question

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Multiple Choice Questions (MCQs)
56. An iron ball at 40°C is dropped in a mug containing water at 40°C. The heat will:
(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.
57. Some stainless steel frying pans are provided with copper bottoms. The reason for this could be that:
(a) copper bottom makes the pan more durable.
(b) such pans appear colourful.
(c) copper is a better conductor of heat than stainless steel.
(d) copper is easier to clean than stainless steel.
58. A wooden spoon is dipped in a cup of ice cream. Its other end :
(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.
59. The device used for measuring temperature is called :
(a) tachometer (b) odometer (c) thermometer (d) barometer
60. The expansion of one of the following liquids is used for measuring the temperature in ordinary
thermometers. This liquid is:
(a) alcohol
(b) water
(c) glycerol
(d) mercury
61. Which of the following features are that of a clinical thermometer ?
A. Short temperature range
B. Wide temperature range
C. Alcohol filled glass bulb
D. Constriction in glass tube
(a) A and B
(b) B and C
(c) A and D
(d) B and D
62. The normal temperature of a healthy person is thirty seven degrees on:
(a) Kelvin scale (b) Roemer scale (c) Fahrenheit scale (d) Celsius scale
63. Digital thermometers available these days for measuring temperature use:
(a) alcohol
(b) water
(c) mercury
(d) none of these
64. Which of the following is not a method of transfer of heat ?
(a) conduction (b) radiation (c) convention
(d) convection
65. Which of the following is not an insulator?
(d) cardboard
(a) brick
(c) brass
(b) bamboo
66. A liquid which is a good conductor of heat is :
(c) mercury
(d) alcohol
(a) water
67. The woollen clothes keep us warm during winter because :
A Wool is an insulator
B. Wool is a conductor
D. Wool has vacuum
C. Wool traps air
(c) C and D
(d) A and C
а) A and B
68. The objects made of steel, mica, wood and brass are lying in the same room during winter season. TI
objects which will feel warmer to touch are:
) steel and brass objects
(b) mica and brass objects
(c) wooden and steel objects
(d) mica and wooden objects
19. The transfer of heat by convection can take place in :
(a) solids and liquids
(b) solids and vacuum
gases and liquids
(d) vacuum and gases
ther
wearing
(b) milk
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plain
(b) B and C​

Answer 1

Answer:

56.b

57.c

58.b

59.c

60.d

61.a

62.d

63.d

64.c

65.c

66.a

67.d

68.a

19.a