Oxygen cylinders used for autogenous (cutting/welding) purposes are ___________________?

Question: Eutectic reaction for iron-carbon system occurs at a temperature of __________ °C.
[A].

723

[B].

959

[C].

1147

[D].

1493

Answer: Option A

Explanation:

No answer description available for this question.

Question: Free oxygen is removed from boiler feed water, because it
[A].

reduces heat transfer co-efficient.

[B].

is corrosive.

[C].

causes explosion.

[D].

none of these.

Answer: Option B

Explanation:

No answer description available for this question.

Question: X-rays do not exhibit the property of
[A].

reflection

[B].

scattering

[C].

diffraction

[D].

dispersion

Answer: Option B

Explanation:

No answer description available for this question.