Chemical Engineering Mcqs

During a phase change process like sublimation, vaporisation, melting etc., the specific ____________ does not change?

• (A)  Enthalpy
• (B)  Gibbs free energy
• (C)  Internal energy
• (D)  Entropy

Answer

Submitted By :Ali Uppal

Enthalpy of a vapor gas mixture may be increased by increasing the________________?

• (A)  Temperature at constant humidity
• (B)  Humidity at constant temperature
• (C)  Temperature and the humidity
• (D)  All

Answer

Submitted By :Ali Uppal

The vapor pressure of liquids (having similar chemical nature) at any specified temperature ______________ with increasing molecular weight?

• (A)  Increases
• (B)  Decreases
• (C)  Remains unchanged
• (D)  Increases linearly

Answer

Submitted By :Ali Uppal

Sometimes, in chemical processes, a part of the outlet stream is rejected as waste in order to keep the impurity level in the system within limits. This phenomenon is termed as the_________________?

• (A)  Recycling
• (B)  Purging
• (C)  Bypassing
• (D)  Recirculation

Answer

Submitted By :Ali Uppal

The average translational kinetic energy with which a gas molecule is endowed is dependent on its__________________?

• (A)  Nature
• (B)  Size
• (C)  Absolute temperature
• (D)  All

Answer

Submitted By :Ali Uppal

2 litres of nitrogen at N.T.P. weighs ______________ gms ?

• (A)  14
• (B)  2.5
• (C)  28
• (D)  1.25

Answer

Submitted By :Ali Uppal

If the absolute temperature of an ideal gas is tripled and simultaneously the pressure is reduced to one third; then the volume of gas will _______________?

• (A)  Remain unaltered
• (B)  Increase nine fold
• (C)  Increase three fold
• (D)  Decrease three fold

Answer

Submitted By :Ali Uppal

Simultaneous doubling of the absolute temperature of a gas and reduction of its pressure to half will result in _____________ in the volume of the gas?

• (A)  No change
• (B)  Doubling
• (C)  1/4th reduction
• (D)  Fourfold increase

Answer

Submitted By :Ali Uppal

The unit of Cp in S.I. units is___________________?

• (A)  W/m2.°K
• (B)  J/kg.°K
• (C)  W/m.°K
• (D)  J/m3. °K

Answer

Submitted By :Ali Uppal

In the reaction, represented by Na2CO3 + HC1 → NaHO3 + NaCl, the equivalent weight of Na2CO3 is________________?

• (A)  53
• (B)  5.3
• (C)  106
• (D)  10.6

Answer

Submitted By :Ali Uppal