Magnetic permeability of iron is increased by its_____________________?

Question: Catalyst used in the hydrogenation of oil is
[A].

nickel

[B].

platinum

[C].

iron

[D].

alumina

Answer: Option A

Explanation:

No answer description available for this question.

Question: Low temperature carbonisation of coal takes place at __________ °C.
[A].

300

[B].

1100

[C].

700

[D].

900

Answer: Option C

Explanation:

No answer description available for this question.

Question: DDT stands for
[A].

diethyl-diphenyl-trichloromethane.

[B].

dichloro-diphenyl-trichloromethane.

[C].

diphenyl-dichloro-trichloromethane.

[D].

dichloro-diphenyl-trichloroethane.

Answer: Option D

Explanation:

No answer description available for this question.