Volume of blast furnace slag is about _______________ times the volume of hot metal (pig iron) of the same weight ?

Question: For a fixed cross-sectional area, the most economical channel section has maximum
[A].

wetted perimeter.

[B].

fluid discharge rate.

[C].

fluid velocity.

[D].

depth of flowing fluid.

Answer: Option B

Explanation:

No answer description available for this question.

Question: α-rays are
[A].

negatively charged.

[B].

positively charged.

[C].

neutral.

[D].

same as X-rays.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Particle nature of cathode rays is proved due to the fact that they
[A].

travel in a straight line.

[B].

get deflected by magnetic electric field.

[C].

produce fluorescence.

[D].

heat the exposed material.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Neutrons are present in all atoms except that of
[A].

He

[B].

C

[C].

H

[D].

Ar

Answer: Option C

Explanation:

No answer description available for this question.