Chemical Engineering Basics

Question: 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

Answer: Option B

Explanation:

No answer description available for this question.

Question: Methyl orange indicator turns
[A].

orange yellow in alkaline medium.

[B].

orange yellow in acidic medium.

[C].

colourless in acidic medium.

[D].

colourless in basic medium.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Dielectric
[A].

is an electrical insulating material.

[B].

of low resistivity is preferred.

[C].

should have high thermal conductivity.

[D].

need not defy the corrosive action of chemicals.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Old cycle handles are coated with nickel using
[A].

cementation.

[B].

spray coating.

[C].

galvanising process.

[D].

tinning process.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Evaporative cooling process employs a combination of cooling and humidification in which the
[A].

sensible heat is added.

[B].

sensible heat is removed and the latent heat is added.

[C].

latent heat is removed.

[D].

sensible heat is added and latent heat is removed.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Corrosion is
[A].

a physical phenomenon.

[B].

a chemical phenomenon.

[C].

same as erosion.

[D].

an uncontrollable phenomenon.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Area under the stress-strain curve upto the __________ is referred to as the modulus of resilience.
[A].

yield strength

[B].

elastic limit

[C].

proportional limit

[D].

maximum point

Answer: Option C

Explanation:

No answer description available for this question.

Question: Oxygen content below __________ percent in air contaminated with nitrogen does not support combustion and is unsafe for humane exposure.
[A].

18

[B].

16

[C].

14

[D].

12

Answer: Option B

Explanation:

No answer description available for this question.

Question: Aluminium is extracted from
[A].

chalcocite

[B].

bauxite

[C].

galena

[D].

none of these

Answer: Option B

Explanation:

No answer description available for this question.

Question: Chalcopyrite is an ore of
[A].

lead

[B].

aluminium

[C].

copper

[D].

zinc

Answer: Option C

Explanation:

No answer description available for this question.