48) The lowest thermal diffusivity is of

Iron

Lead

Aluminium

Rubber

Answer is:

Rubber

ISRO Technician-B MRAC Question Paper - 2016 (Set -1) with Answer Key

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49) Barometer is used for measuring

Atmospheric pressure

Dew point temperature

Latent heat of vaporization

Relative humidity

Answer is:

Atmospheric pressure

Explanation:

Atmospheric pressure: The atmospheric air exerts a normal pressure upon all surfaces with which it is in contact and it is known as atmospheric pressure. Atmospheric pressure is also known as barometric pressure. Barometer is used to measure atmospheric pressure.