Chemical Engineering MCQs

6108 MCQs (Page 546 of 611)

Attempt Chemical Engineering Quiz

1 gm mole of methane (CH4) contains_________________?

A. 6.02 × 1023 atoms of hydrogen
B. 4 gm atoms of hydrogen
C. 3.01 × 1023 molecules of methane
D. 3 gms of carbon

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If pH value of an acidic solution is decreased from 5 to 2, then the increase in its hydrogen ion concentration is _____________ times?

A. 10
B. 100
C. 1000
D. 10000

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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

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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

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Solutions which distil without change in composition are called________________?

A. Ideal
B. Saturated
C. Supersaturated
D. Azeotropic

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

A. Molality
B. Mole fraction
C. Weight percent
D. Molarity

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Cp is expressed in S.I. unit as_______________?

A. J/kg.°k
B. 0°k
C. W/m2.°c
D. W/m.°k

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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

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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

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Gases diffuse faster compared to liquids because of the reason that the liquid molecules_________________?

A. Are held together by stronger inter-molecular forces
B. Move faster
C. Have no definite shape
D. Are heavier

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