Heat Thermodynamics - WBCS Online Portal for Self Studies

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Heat, Temperature & Thermodynamics

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The instrument used to measure humidity is
A)anemometer
B)hygrometer
C)thermometer
D)None of these

B

One Joule is approximately equal to
A).28 cal
B).32 cal
C).24 cal
D)None of these

C

Temperature is a property which determines
A. How much heat a body contains
B. Whether a body will feel hot or cold to touch
C. In which direction heat will flow between two systems
D.How much total absolute energy a body has

C

We prefer mercury as a thermometric substance because
A.Over a wide range of temperature its expansion is uniform
B.It does not stick to thermometer glass
C.It opaque to light
D.All of above

D

. The scales of temperature are based on two fixed points which are
A.The temperature of melting ice and boiling water at atmospheric pressure
B.The temperatures of ice cold and boiling water
C.The temperatures of frozen and boiling mercury

A.The temperature of melting ice and boiling water at atmospheric pressure…….peyechi.

A

(c) radiation

C

(c) radiation

C

The latent heat of ice is-
80 calorie per gram / 85 calorie per gram / 65 calorie per gram /100cal per gram

. In a clinical thermometer the mercury in the capillary tube does not contract once removed from the patient because
A.Mercury takes a long time to contract
B.The amount of mercury use is very small
C.The capillary tube has a small constriction near the bulb
D.The capillary tube is very narrow

The hottest condition of black body is a good radiator of heat.
True / false

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