816.15
1632.3
-1632.3
-2448.45
✅ The correct answer is option C.
Chemical Engineering MCQs
One Newton is equal to __________ dynes.
10²
10³
10⁴
10⁵
✅ The correct answer is option D.
Equal masses of CH₄ and H₂ are mixed in an empty container. The partial pressure of hydrogen in this container expressed as the fraction of total pressure is
1-Sep
8-Sep
1-Feb
5-Sep
✅ The correct answer is option B.
Heat of transition is the heat evolved or absorbed, when a substance is converted from
Vapor to liquid
Vapor to solid
Solid to liquid
One allotropic form to another allotropic form
✅ The correct answer is option D.
The value of the gas-law constant ‘R’ is 1.987
Kcal/kg-mole.°C
Btu/lb-mole.°R
Kcal/kg-mole.°K
Both B & C
✅ The correct answer is option D.
A gas at 0°C was subjected to constant pressure cooling until its volume became half the original volume. The temperature of the gas at this stage will be
0°C
0°K
-136.5°C
-136.5°K
✅ The correct answer is option C.
At higher temperatures, molal heat capacities for most of the gases (at constant pressure) __________ with increase in temperature.
Varies linearly
Increases
Decreases
Does not vary
✅ The correct answer is option B.
The heat change for the reaction, C(s) + 2S(s) → CS₂(l), is 104.2 kJ. It represents the heat of
Formation
Solution
Combustion
Fusion
✅ The correct answer is option A.
One mole of methane undergoes complete combustion in a stoichiometric amount of air. The reaction proceeds as CH₄ + 2O₂ → CO₂ + 2H₂O. Both the reactants and products are in gas phase. ΔH°298 = – 730 kJ/mole of methane. Mole fraction of water vapour in the product gases is about
0.19
0.33
0.4
0.67
✅ The correct answer is option A.
2 litres of nitrogen at N.T.P. weighs __________ gms.
14
2.5
28
1.25
✅ The correct answer is option B.