231. Cp equals Cv at
0°C
0°K
0°F
0°R
✅ The correct answer is option B.
Statiometery MCQs
232. N₂ content in a urea sample was found to be only 42%. What is the actual urea content of the sample ? (molecular weight of urea = 60)
80%
90%
95%
98%
✅ The correct answer is option B.
233. 1 Kcal/kg. °C is equivalent to __________ BTU/lb. °F.
1
2.42
4.97
None of these
✅ The correct answer is option A.
234. Assuming applicability of ideal gas law, the pure component volume of the vapor in a saturated gas can be calculated from theoretical relationship. The volumetric composition of a vapor saturated gas is independent of the
Nature of the liquid
Nature of the gas
Temperature of the liquid
Total pressure
✅ The correct answer is option B.
236. Vapor pressure of water at 100°C is about __________ bar.
0.1013
1.013
10.13
101.3
✅ The correct answer is option B.
237. The value of Trouton’s ratio (λb/Tb) for a number of substances is 21 (where, λb = molal that of vaporisation of a substance at its normal boiling point, KCal/kg. mole and Tb = normal boiling point, °K). The Kis-tyakowsky equation is used for calculation of Trouton’s ratio of __________ liquids.
Polar
Non-polar
Both A & B
Neither A nor B
✅ The correct answer is option C.
238. If the pressure of a gas is reduced to half & its absolute temperature is doubled, then the volume of the gas will
Be reduced to l/4th
Increase four times
Increase two times
None of these
✅ The correct answer is option B.
239. During a phase change process like sublimation, vaporisation, melting etc., the specific __________ does not change.
Enthalpy
Gibbs free energy
Internal energy
Entropy
✅ The correct answer is option B.
240. Volume percent for gases is equal to the
Weight percent
Mole percent
Weight percent only for ideal gases
Mole percent only for ideal gases
✅ The correct answer is option D.