Engineering Thermodynamics (3131905) MCQs

MCQs of Combustion

Showing 1 to 10 out of 25 Questions
1 2 3
1.

The principal constituents of a fuel are

(a)

Carbon and hydrogen
(b)

Oxygen and hydrogen
(c)

Sulphur and oxygen
(d)

Sulphur and hydrogen
Answer:

Option (a)

2.

Incomplete combustion of fuel in the furnace is judged by high __________ of the flue gases.

(a)

CO content
(b)

Dew point
(c)

CO₂ content
(d)

O₂ content
Answer:

Option (a)

3.

A fuel is substantce which release ______on combustion.

(a)

mechanical energy
(b)

magnetic energy
(c)

heat energy
(d)

chemical energy
Answer:

Option (c)

4.

A fuel is always react with_________during combustion and produced heat.

(a)

oxygen
(b)

water
(c)

nitrogen
(d)

carbon
Answer:

Option (a)

5.

During combustion__________always remains inert.

(a)

oxygen
(b)

hydrogen
(c)

nitrogen
(d)

carbon
Answer:

Option (c)

6.

Atmoshpheric air contains  oxygen_________by mass and___________by volume.

(a)

24%,22%
(b)

23.2%,21%
(c)

21.3%,23%
(d)

23%,21.3%
Answer:

Option (b)

7.

The molecular mass of oxygen is.......

(a)

12
(b)

14
(c)

16
(d)

32
Answer:

Option (d)

8.

The molecular mass of nitrogen is________.

(a)

24
(b)

23
(c)

27
(d)

28
Answer:

Option (d)

9.

The stochiometric air required for complte combustion of 1 kg of hydrogen is___________.

(a)

34.5
(b)

32.6
(c)

35.2
(d)

36.3
Answer:

Option (a)

10.

If 1 m3 of H2 combines with 2.38 m3 of air, it will give__________.

(a)

3.38 m3 of H2O
(b)

1 m3 of H2O
(c)

2.38 m3 of H2O
(d)

1.88 m3 of H2O
Answer:

Option (b)

Showing 1 to 10 out of 25 Questions
1 2 3