Fusion of limestone and __________ produces high alumina cement.

Question: ‘Wind loss’ resulting from unscientific storage of coal may be the order of about __________ percent.
[A].

2.5

[B].

7.5

[C].

10.5

[D].

14.5

Answer: Option A

Explanation:

No answer description available for this question.

Question: A coal gasifier opearating at 20 atm. (e.g. Lugri gasifier) as compared to one operating at atmospheric pressure (e.g. Kopper-Totzek or Winkler gasifier) will produce a gas having
[A].

higher methane content and thus higher calorific value.

[B].

higher carbon monoxide content.

[C].

lower carbon dioxide content.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Question: Artificial draught produced by a fan can be controlled by the
[A].

speed of the fan.

[B].

damper.

[C].

variation in the pitch of the fan blades.

[D].

all (a), (b)and(c).

Answer: Option D

Explanation:

No answer description available for this question.