Blast furnace gas burns with a bluish flame, because of the presence of____________________?

Question: Coalification means the
[A].

process of conversion of lignite into anthracite.

[B].

underground gasification of coal.

[C].

complete combustion of coal.

[D].

direct hydrogenation of coal.

Answer: Option A

Explanation:

No answer description available for this question.

Question: A sample of natural gas containing 80% methane (CH4) and rest nitrogen (N2) is burnt with 20% excess air. With 80% of the combustibles producing CO2 and the reminder going to CO, the Orsat analysis in volume percent is
[A].

CO2 : 6.26, CO : 1.56, O2 : 3.91, H2O :15.66, N2 : 72.60

[B].

CO2 : 7.42, CO : 1.86, O2 : 4.64, N2:86.02

[C].

CO2 : 6.39, CO : 1.60, O2 : 3.99, H2O:25.96, N2:72.06

[D].

CO2 : 7.60, CO : 1.90, O2 : 4.75, N2 : 85.74

Answer: Option B

Explanation:

No answer description available for this question.

Question: Bulk density of pulverised coal may be about __________ kg/m3.
[A].

100

[B].

500

[C].

1000

[D].

1500

Answer: Option B

Explanation:

No answer description available for this question.