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Chemical Engineering - Chemical Engineering Basics

Exercise : Chemical Engineering Basics - Section 2
21.
Case hardening is not done by
nitriding
hot dipping
electroplating
both b & c
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
Satellites burn off during re-entry to earth's atmosphere, because of the
combustion with air.
gravitational pull by earth.
friction with earth's atmosphere.
loss in weight of the satellite.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
With increase in compression ratio, the volumetric efficiency of air compressor
increases.
decreases.
remains same.
may increase or decrease (depends on the suction pressure).
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
Neutrons are present in all atoms except that of
He
C
H
Ar
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
Biological shield in a nuclear reactor is generally provided to protect against the
α-rays
β-rays
gamma rays & neutrons
electrons
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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