chemical engineering stoichiometry MCQs – Page 19

Practise multiple-choice questions from chemical engineering stoichiometry for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering stoichiometry Mcqs
365. An ideal gas can be liquefied, because ___________________?
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A. Its molecular size is very small

B. Forces operative between its molecules are negligible

C. It gets solidified directly without becoming liquid

D. Its critical temperature is more than 0C

369. _________________ chart is a graph related to Antoine equation ?
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A. Cox

B. Ostwald

C. Enthalpy-concentration

D. Molliers

370. The latent heat of vaporisation__________________?
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A. Decreases with increased temperature

B. All A., B. & C.

C. Decreases as pressure increases

D. Becomes zero at the critical point

371. Pick out the wrong statement?
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A. A supersaturated solution of a sparingly soluble solute, at a concentration of C, is being fed to a crystalliser at a volumetric flow rate of V. The solubility .of the solute is C1. The output rate of solids from an efficient crystalliser is (C + C1) V

B. 1.2 gm atoms of carbon and 1.5 gm moles of oxygen are reacted to give 1 gm mole of carbon dioxide. The limiting reactant is carbon. The percent excess reactant supplied is 25

C. To make 100 kg of a solution containing 40% salt by mixing solution A (containing 25% salt) and solution B (containing 50% salt), the amount of solution A required is 40 kg

D. A gas bubble at a pressure of Pg is passed through a solvent with a saturation vapour pressure of Ps. If the time of passage of the bubble is long and air is insoluble in the solvent, the mole fraction of solvent in the bubble will be equal to Ps/Pg

372. Which of the following has the smallest least effect on the solubility of a solute into the solvent ?
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A. Nature of the solute

B. Temperature

C. Pressure

D. Nature of the solvent

374. Size range of the colloids particles is __________________?
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A. 500 1000 microns

B. 5 200 milli-microns

C. 50 200 microns

D. 10 50 Angstrom

375. Isotopes are atoms having the same _____________________?
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A. Mass number

B. Atomic mass

C. None of these

D. Number of neutrons

378. Which of the following is not a colligative property ?
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A. None of these

B. Osmotic pressure

C. Depression of freezing point

D. Lowering of vapor pressure

380. Gases diffuse faster compared to liquids because of the reason that the liquid molecules_________________?
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A. Move faster

B. Are held together by stronger inter-molecular forces

C. Are heavier

D. Have no definite shape