91. The heat of adsorption of a gas caused by Van der Walls forces of attraction and capillarity is equal to the heat of
Normal condensation
Wetting
Sum of A and B
Difference of A and B
✅ The correct answer is option C.
Statiometery MCQs
93. S.T.P. corresponds to
1 atm. absolute pressure & 15.5°C
760 mm Hg gauge pressure & 15.5°C
760 torr & 0°C
101.325 kPa gauge pressure & 15.5°C
✅ The correct answer is option A.
95. For the gaseous phase reaction, N₂ + O₂ ⇋ 2NO, ΔH = + 80 kJ/kg. mole; the decomposition of NO is favoured by
Increasing the concentration of N₂
Decrease in temperature
Increase in pressure
Decrease in pressure
✅ The correct answer is option B.
96. The pH value of a solution is 5.9. If the hydrogen ion concentration is decreased hundred times, the solution will be
Basic
More acidic
Neutral
Of the same acidity
✅ The correct answer is option A.
97. 1 kg/cm² is equal to
760 torr
1KPa
10 metres of water column
1 metre of water column
✅ The correct answer is option C.
98. Except for monoatomic gases, the molal heat capacity at constant volume for all gases is __________ Kcal/Kg mole.° K.
3
> 3
< 3
< 1
✅ The correct answer is option B.
99. CaCO₃ contains __________ percent of Ca by weight.
40
48
96
12
✅ The correct answer is option A.
100. The hydroxyl ion (OH?) concentration in a solution having pH value 3 will be
Answer: Option A
null
null
null
✅ The correct answer is option A.