Chemical Engineering Basics MCQ Questions & Answers

1

Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than

A) 5 B) 10 C) 20 D) 35

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Answer & Solution

Answer: Option C

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2

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

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Answer & Solution

Answer: Option B

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3

Uniform ramming of sand in green sand moulding process leads to

A) Reduced chance of gas porosity B) Greater dimensional stability of the casting C) Uniform flow of molten metal into the mould cavity D) Less sand expansion type of casting defect

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Answer & Solution

Answer: Option B

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4

Pick out the wrong statement. Termination of polymerisation reaction occurs, if the

A) Catalyst supply is stopped B) Monomer supply is exhausted C) Impurities present in monomers interfere with the chemical reaction D) Two ends of a chain of molecules join

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Answer & Solution

Answer: Option A

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5

Statistical quality control was developed by __________ , an American scientist during world war II.

A) Water shewhart B) Fredric Taylor C) John Wright D) Woolmer

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Answer & Solution

Answer: Option A

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6

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

A) Formability B) Yield strength C) Toughness D) Resilience

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Answer & Solution

Answer: Option A

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7

The function of neutral flux used in the pyrometallurgy of metal extraction is to increase the __________ of the slag.

A) Fluidity B) Basicity C) Acidity D) Viscosity

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Answer & Solution

Answer: Option A

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8

In a titration involving weak acid and strong base, the preferred indicator is

A) Methyl orange B) Phenolphthalein C) Ethyl orange D) Fehling's solution

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Answer & Solution

Answer: Option B

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9

Projection welding & stud welding is categorised as the __________ welding.

A) Pressure B) Thermit C) Resistance D) Arc

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Answer & Solution

Answer: Option C

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10

Filler metal is not used in the __________ welding.

A) Seam B) Electric spot C) Projection D) All of the above

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Answer & Solution

Answer: Option D

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Chemical Engineering Basics MCQ Questions & Answers | Chemical Engineering