Fuels and Combustion - Section 1 (6)

Directions to Solve

Fuels and Combustion - Section 1

Fuels and Combustion is a field and there are problems available to
solve in this category. You will find the MCQs and can solve them easily.

41.

Which of the following is not a product of tar distillation ?

A.	Phenol & naphthalene
B.	Benzol & pitch
C.	Anthracene & creosote
D.	None of these

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

42.

The internal energy of the combustion products is __________ compared to that of reactants.

A.	more
B.	less
C.	equal
D.	more or less ; (depends on the state of fuel.)

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

43.

Presence of __________ in a dry gaseous fuel does not contribute to its calorific value.

A.	sulphur
B.	oxygen
C.	hydrogen
D.	carbon

Answer: Option B

Explanation:

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44.

Size of blast furnace grade coke is __________ mm.

A.	25-80
B.	0-15
C.	15-25
D.	>100

Answer: Option A

Explanation:

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45.

Which of the following is not used as a binder in coal briquetting ?

A.	Tar
B.	Molasses
C.	Pitch
D.	Line

Answer: Option D

Explanation:

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46.

Low temperature carbonisation

A.	is mainly for producing the smokeless domestic coke.
B.	is meant for the production of 'metallurgical coke'.
C.	produces higher quantity of gas than high temperature carbonisation.
D.	produces less quantity of tar than high temperature carbonisation.

Answer: Option A

Explanation:

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47.

Gross and net calorific value of a fuel will be the same

A.	if its ash content is zero.
B.	ifits carbon content is very low.
C.	if its hydrogen/hydrogen compound content is zero.
D.	under no circumstances.

Answer: Option C

Explanation:

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48.

During combustion of gaseous fuels, deficiency of air

A.	lengthens the flame.
B.	tends to shorten the flame.
C.	does not affect the flame length.
D.	increases the flame temperature.

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

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