Chemical Engineering MCQs

6108 MCQs  (Page 544 of 611)

Attempt Chemical Engineering Quiz
Size range of the colloids particles is __________________?
A. 5 – 200 milli-microns
B. 50 – 200 microns
C. 500 – 1000 microns
D. 10 – 50 angstrom
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Heat capacity of air can be approximately expressed as, Cp = 26.693 + 7.365 x10-3 T, where, Cp is in J/mole.K and T is in K. The heat given off by 1 mole of air when cooled at atmospheric pressure from 500°C to – 100°C is ____________________?
A. 10.73 kj
B. 16.15 kj
C. 18.11 kj
D. 18.33 kj
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1 kg of calcium carbide (CaC2) produces about 0.41 kg of acetylene gas on treatment with water. How many hours of service can be derived from 1 kg of calcium carbide in an acetylene lamp burning 35 litres of gas at NTP per hour ?
A. 5
B. 10
C. 15
D. 20
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Addition of a non-volatile solute to a solvent produces a ______________ in its solvent?
A. Freezing point elevation
B. Boiling point depression
C. Vapor pressure lowering
D. All a., b. & c.
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With increase in the temperature of pure (distilled) water, its____________________?
A. Poh decreases and ph increases
B. Poh and ph both decreases
C. Ph and poh both increases
D. Ph decreases and poh increases
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6 gms of magnesium (atomic weight = 24), reacts with excess of an acid, the amount of H2 produced will be ______________ gm?
A. 0.5
B. 1
C. 3
D. 5
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Boiling point of a solution as compared to that of the corresponding solvent is _________________?
A. Less
B. More
C. Same
D. Either more or less; depends upon the solvent
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Number of gm moles of solute dissolved in 1 kg of solvent is called its___________________?
A. Normality
B. Molarity
C. Molality
D. Formality
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1 Pascal (unit of pressure) is equal to _______________ N/m2 ?
A. 10
B. 1
C. 0.1
D. 1000
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Assuming that CO2 obeys perfect gas law, calculate the density of CO2 (in kg/m3) at 263°C and 2 atm ?
A. 1
B. 2
C. 3
D. 4
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Word of the Day
24 Jul
Untenable
(especially of a position or view) not able to be maintained or defended against attack or objection.
ناقابل مدافعت، غیر مستحکم، جو دلیل سے ثابت نہ ہو سکے

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