Its molecular size is very small
Its critical temperature is more than 0°C
Forces operative between its molecules are negligible
It gets solidified directly without becoming liquid
✅ The correct answer is option C.
Chemical Engineering MCQs
Heat of reaction is a function of the
Pressure
Temperature
Both(a)&(b)
Neither (a) nor (b)
✅ The correct answer is option C.
Solution made by dissolving equimolar amounts of different solutes in the same amount of a given solvent will have the
Same elevation in boiling point
Different elevation in boiling point
Elevation in boiling point in the ratio of their molecular weights
None of these
✅ The correct answer is option A.
Assuming that CO₂ obeys perfect gas law, calculate the density of CO₂ (in kg/m³) at 263°C and 2 atm.
1
2
3
4
✅ The correct answer is option B.
With increase in temperature, the surface tension of water
Increases
Decreases
Remains constant
Increases linearly
✅ The correct answer is option B.
40 gms each of the methane and oxygen are mixed in an empty container maintained at 40°C. The fraction of the total pressure exerted by oxygen is
1-Feb
1-Mar
1-Apr
2-Mar
✅ The correct answer is option B.
The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. If, at a total pressure of one standard atm. exerted by the vapours of water and toluene, the mole fraction of water Xw in the vapour phase satisfies
0 < Xw < 0.5
Xw = 0.5
0.5 < Xw < 1.0
Xw = 1.0
✅ The correct answer is option C.
Ideal solution is formed, when its components have zero
Heat of mixing
Volume change
Both A & B
Neither A nor B
✅ The correct answer is option C.
The heat capacity of a solid compound is calculated from the atomic heat capacities of its constituent elements with the help of the
Trouton’s rule
Kopp’s rule
Antonie equation
Kistyakowsky equation
✅ The correct answer is option B.
The vapour pressure of water is given by, in Psat = A – (5000/T), where A is a constant, Psat is the vapour pressure in atm. and T is the temperature in K.The vapor pressure of water in atm. at 50°C is approximately
0.07
0.09
0.11
0.13
✅ The correct answer is option D.