With increase in molecular weight of the gas, the head developed by a centrifugal compressor will

Question: Non-ferrous alloys used for making cutting tools need not have high
[A].

abrasion resistance

[B].

toughness

[C].

red hardness

[D].

cutting speed

Answer: Option B

Explanation:

No answer description available for this question.

Question: 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

Answer: Option C

Explanation:

No answer description available for this question.

Question: Dialysis is the process of separating substances in the
[A].

colloidal state from those present in the true solutions.

[B].

colloidal state from those present in the suspensions.

[C].

suspension from those present in the solutions.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.