Chemical Engineering Mcqs

The equilibria relations in a multi-component and multiphase system cannot be calculated with the help of the_______________?

• (A)  Phase rule
• (B)  Experimental data
• (C)  Empirical equations
• (D)  Theoretical equations

Answer

Submitted By :Ali Uppal

Solutions which distil without change in composition are called________________?

• (A)  Ideal
• (B)  Saturated
• (C)  Supersaturated
• (D)  Azeotropic

Answer

Submitted By :Ali Uppal

In osmosis through a semi-permeable membrane, diffusion of the___________________?

• (A)  Solvent is from low concentration to high concentration region
• (B)  Solvent is from high concentration to low concentration region
• (C)  Solute takes place
• (D)  None of these

Answer

Submitted By :Ali Uppal

Cp is expressed in S.I. unit as_______________?

• (A)  J/kg.°K
• (B)  0°K
• (C)  W/m2.°C
• (D)  W/m.°K

Answer

Submitted By :Ali Uppal

Increasing the temperature of an aqueous solution will cause decrease in its________________?

• (A)  Molality
• (B)  Mole fraction
• (C)  Weight percent
• (D)  Molarity

Answer

Submitted By :Ali Uppal

A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is__________________?

• (A)  13728 J
• (B)  19206 J
• (C)  4576 J
• (D)  12712 J

Answer

Submitted By :Ali Uppal

Enthalpy of formation of NH3 is – 46 kJ/kg mole. The enthalpy change for the gaseous reaction, 2NH3 → N2 + 3H2, is equal to _____________ kJ/kg. mole?

• (A)  46
• (B)  92
• (C)  -23
• (D)  -92

Answer

Submitted By :Ali Uppal

1 Pascal (unit of pressure) is equal to _______________ N/m2 ?

• (A)  10
• (B)  1
• (C)  0.1
• (D)  1000

Answer

Submitted By :Ali Uppal

Pick out the wrong unit conversion of mass transfer co-efficient?

• (A)  1 lb/hr.ft3.atm. = 4.8182 kg/hr.m2.bar
• (B)  1 kg/hr.m2.atm= 0.98687 kg/hr. m .bar
• (C)  1 lb/hr.ft2 = 4.8823 kg/hr.m2
• (D)  1 kg/hr.m2 = 4.8823 lb/hr.ft2

Answer

Submitted By :Ali Uppal

Heat of solution in a system in which both solute and solvent are liquids is termed as_________________?

• (A)  Heat of solvation
• (B)  Heat of hydration
• (C)  Standard integral heat of solution
• (D)  Heat of mixing

Answer

Submitted By :Ali Uppal