142) The conditions of temperature and pressure at 0 Degree Centigrade (273K) and 760 mm of Hg pressure are termed as __________ temperature and pressure.

143) The value of c_p/c_v for air is

144) The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature, and dQ = Heat absorbed or rejected)

145) Which of the following gas has the highest calorific value?

146) The oxygen atom is __________ times heavier than the hydrogen atom.