Chemical Engineering - Chemical Engineering Basics

1. 

Diamagnetic materials

A. are magnetised by eddy currents only.
B. are non-magnetic and can not be magnetised.
C. are magnetised in direction opposite to the magnetic field.
D. can be magnetised in one direction only.

Answer: Option C

Explanation:

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2. 

In connection with corrosion of metals, passivation is the process that

A. intensifies deterioration.
B. changes the composition of the metal.
C. inhibits further deterioration.
D. none of these.

Answer: Option C

Explanation:

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3. 

With increase in impurities in metals, their corrosion resistances

A. increase
B. decrease
C. remain same
D. may increase or decrease ; depending on the type of metal

Answer: Option B

Explanation:

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4. 

Most important property of steels for use in automobile bodies is the

A. formability
B. yield strength
C. toughness
D. resilience

Answer: Option A

Explanation:

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5. 

Consideration of the creep is the most important in case of the

A. blades of gas turbine.
B. piston of an I. C. engine.
C. flywheel of steam engine.
D. cycle chain.

Answer: Option A

Explanation:

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