CHEMICAL ENGINEERING

Question: A boy weighing 110lb climbs up a 50 ft high vertical destination in 100 seconds. Horse power of the boy is __________ hp.
[A].

0.1

[B].

0.5

[C].

0.8

[D].

1

Answer: Option A

Explanation:

No answer description available for this question.

Question: Babbit lining is used on brass/bronze bearings to increase the
[A].

antifriction properties.

[B].

compressive strength.

[C].

bearing resistance.

[D].

wear resistance.

Answer: Option D

Explanation:

No answer description available for this question.

Question: In case of simple harmonic motion, displacement is proportional to the
[A].

velocity

[B].

acceleration

[C].

both (a) & (b)

[D].

neither (a) nor (b)

Answer: Option B

Explanation:

No answer description available for this question.

Question: Addition of silicon to cast iron
[A].

promotes graphite module formation.

[B].

improves its ductility.

[C].

does not promote graphite flakes formation.

[D].

increases the fluidity of molten metal.

Answer: Option D

Explanation:

No answer description available for this question.

Question: Magnesium addition to cast iron increases its
[A].

corrosion resistance.

[B].

creep strength.

[C].

ductility and strength in tension.

[D].

hardness.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Fahrenheit and Centigrade scales have the same readings at
[A].

-55°

[B].

-40°

[C].

-33°

[D].

-58°

Answer: Option B

Explanation:

No answer description available for this question.

Question: Which of the following parameters is actually measured during tensile testing of a specimen using Universal testing machine?
[A].

Load & elongation.

[B].

Engineering stress & strain.

[C].

True stress & strain.

[D].

Poisson’s ratio & Young’s modulus.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Brazing is the joining of metals
[A].

without melting the base metal.

[B].

with a non-ferrous filler.

[C].

both (a) & (b).

[D].

neither (a) nor (b).

Answer: Option C

Explanation:

No answer description available for this question.

Question: Fatigue strength of a metal is improved by
[A].

overstressing.

[B].

scratching the surface.

[C].

raising the temperature.

[D].

understressing.

Answer: Option D

Explanation:

No answer description available for this question.

Question: An atom bomb works on the principle of
[A].

nuclear fission

[B].

nuclear fusion

[C].

both the nuclear fission & fusion

[D].

ionisation

Answer: Option A

Explanation:

No answer description available for this question.