Chemical Engineering MCQs

6108 MCQs  (Page 437 of 611)

Attempt Chemical Engineering Quiz
At a given temperature, the volume of a gas dissolved in a solvent _______________ with increase in pressure?
A. Increases
B. Decreases
C. Remains unchanged
D. May increase or decrease; depends on the gas
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____________ does not change during phase transformation processes like sublimation, melting & vaporisation?
A. Entropy
B. Gibbs free energy
C. Internal energy
D. All (a), b. & (c)
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At constant temperature and pressure, for one mole of a pure substance, the ratio of the free energy to the chemical potential is____________________?
A. Zero
B. One
C. Infinity
D. Negative
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Lenz’s law results from the law of conservation of___________________?
A. Mass
B. Momentum
C. Energy
D. None of these
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Which of the following units is not present in both the vapor compression refrigeration system and absorption refrigeration system ?
A. Expansion valve
B. Condenser
C. Refrigerator
D. Compressor
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One ton of refrigeration capacity is equivalent to the heat removal rate of____________________?
A. 50 kcal/hr
B. 200 btu/hr
C. 200 btu/minute
D. 200 btu/day
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Entropy, which is a measure of the disorder of a system, is__________________?
A. Independent of pressure
B. Independent of temperature
C. Zero at absolute zero temperature for a perfect crystalline substance
D. All a, b. & c
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A refrigerator works on the principle of _____________ law of thermodynamics?
A. Zeroth
B. First
C. Second
D. Third
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Gibbs free energy (G) is represented by, G = H – TS, whereas Helmholtz free energy, A. is given by, A = E – TS. Which of the following is the Gibbs-Helmholtz equation ?
A. [∂(g/t)/∂t] = – (h/t2)
B. [∂(a/t)/∂t]v = – e/t2
C. Both a. and b.
D. Neither a. nor b.
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Containers made of high silicon cast iron (14% Si) are not suitable for the storage of ____________________?
A. Acetic acid
B. Benzoic & boric acids
C. Phosphoric acid (95%) & sulphuric acid (95%)
D. Hydrochloric acid (concentrated)
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Word of the Day
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January
a preference or special liking for something; a bias in favour of something.
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