Thermal Propert...

A vessel containing 1 mole of O₂ gas (molar mass 32) at a temperature T. The pressure of the gas is P. An identical vessel containing one mole of He gas (molar mass 4) at temperature 2 T has a pressure of

The mean distance between the atoms of iron is 3 × 10^–10 m and interatomic force constant for iron is 7 N/m. The Young’s modulus of elasticity for iron is

8 g of O₂, 14 g of N₂ and 22g of CO₂ is mixed in a container of 10 litre capacity at 27^oC. The pressure exerted by the mixture in terms of atmospheric pressure is (R = 0.082 litre atm. K^–1 mol^–1)

A spherical ball is dropped in a long column of viscous liquid. Which of the following graphs represent the variation of
(i) gravitational force with time
(ii) viscous force with time
(iii) net force acting on the ball with time

On the Celsius scale the absolute zero of temperature is at

Oxygen boils at –183^oC. This temperature is approximately

The temperature of the sun is measured with

Thermoelectric thermometer is based on

Maximum density of H₂O is at the temperature

The study of physical phenomenon at low temperature (below liquid nitrogen temperature) is called