0.1013
1.013
10.13
101.3
✅ The correct answer is option B.
Statiometery MCQs
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.
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.
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.
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.
Number of gram equivalent of solute dissolved in one litre of solution is called its
Normally
Molarity
Molality
Formality
✅ The correct answer is option A.
Pick out the wrong unit conversion.
L kgf= 9.8 Newton
1 stoke = 1 m²/second
1 Pascal second = 10 poise
1 ppm = 1 ml/m³ = 1 mg/kg
✅ The correct answer is option B.
Enthalpy of a vapor gas mixture may be increased by increasing the
Temperature at constant humidity
Humidity at constant temperature
Temperature and the humidity
All of the above
✅ The correct answer is option D.
The depression in freezing point of a solution is
Inversely proportional to the mass of solvent
Directly proportional to the mole of solute
Both A & B
Neither A nor B
✅ The correct answer is option C.
Specific gravity on API scale is given by the relation(where, G = specific gravity at 15.5°C).
°API = 200(G – 1)
°API = (141.5/G) – 131.5
°API = (140/G) – 130
°API = 145 – (145/G)
✅ The correct answer is option B.