The ratio of maximum adiabatic flame temperature in air to that in pure oxygen is always___________________?

Question: Calorific value of of blast furnace gas is around __________ KCal/Nm3.
[A].

850

[B].

1800

[C].

4200

[D].

6500

Answer: Option A

Explanation:

No answer description available for this question.

Question: Low temperature oxidation of stored coal results in the
[A].

decrease in its caking power & calorific value.

[B].

decrease in its carbon & hydrogen content.

[C].

increase in its oxygen content.

[D].

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

Answer: Option D

Explanation:

No answer description available for this question.

Question: Ash content in the coke produced from a coking coal having 20% ash may be around __________ percent.
[A].

6

[B].

12

[C].

18

[D].

24

Answer: Option D

Explanation:

No answer description available for this question.

Question: Coke oven gas is stripped of its H2S and mercaptans content by
[A].

absorption in wash oil.

[B].

adsorption on bog iron bed.

[C].

bubbling it through dilute sulphuric acid.

[D].

adsorption on silica gel.

Answer: Option B

Explanation:

No answer description available for this question.