Combustion And Fuel Test

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Combustion And Fuel Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is a fossil fuel?

A
Nuclear energy

B
Wind

C
Solar energy

D
Natural gas

Solution

Natural gas and petroleum are formed from the dead remains of marine plants and animals under geothermal conditions of high temperature and pressure.
Hence, it is a fossil fuel.
Question 2
1 / -0

What are the most suitable temperature and pressure conditions for the formation of petroleum?

A
High temperature and low pressure

B
High pressure and low temperature

C
High temperature and high pressure

D
Low temperature and low pressure

Solution

The most suitable temperature and pressure conditions for the formation of petroleum is high temperature and high pressure.
Question 3
1 / -0

Which of the following are used these days to make the head of a matchstick?

a. Antimony trisulphide
b. Potassium chlorate
c. Red phosphorus
d. White phosphorus

A
Only a and b

B
Only b and c

C
Only a and c

D
Only b and d

Solution

Antimony trisulphide and potassium chlorate are used these days to make the head of a matchstick.
Red phosphorus is coated on the rubbing surface that is on the side of a matchbox.
White phosphorus is not used these days because it may undergo spontaneous combustion and hence, its use is not safe.
Question 4
1 / -0

Which instrument is fitted in automobiles to reduce the harmful emissions from its exhaust?

A
Catalytic converter

B
Biogas plant

C
Electrostatic precipitator

D
Sedimentation

Solution

Catalytic converter is fitted in automobiles to reduce the harmful emissions from its exhaust.
This instrument has a catalyst, which can convert carbon monoxide into carbon dioxide and oxides of nitrogen into gaseous nitrogen. This is a pollution control measure.
Question 5
1 / -0

Which of the following, when buried under the earth for a long period, give(s) rise to petroleum?

A
Forests

B
Aquatic organisms

C
Wildlife

D
Microorganism

Solution

Petroleum is formed from the organisms living in the sea. When they die, their bodies settle at the bottom of the sea and get covered with layers of sand and clay. Over a period of time, they get converted into petroleum.
Question 6
1 / -0

Liquefied petroleum gas consists mainly of

A
methane

B
carbon monoxide

C
butane

D
nitrogen

Solution

This is the correct option. Liquefied petroleum gas consists mainly of butane.
Question 7
1 / -0

Which of the following is not a constituent of petroleum?

A
Coke

B
Diesel

C
Paraffin

D
Kerosene

Solution

Coke is formed by the destructive distillation of coal and is not a component of petroleum.
Question 8
1 / -0

Which among the following is the correct full form of CNG?

A
Compressed Natural Gas

B
Carbonised Natural Gas

C
Carbonated Natural Gas

D
None of the above

Solution

Compressed natural gas, commonly known as CNG, is an important automobile fuel which has methane as the main component.

Question 9

1 / -0

Observe the following Venn diagram and identify the correct option naming W, X, Y and Z:

	W	X	Y	Z
(1)	Paper	Paraffin wax	Methane	Kerosene
(2)	Natural gas	Paper	Hydrogen	Wood
(3)	Natural gas	Paraffin wax	Methane	Kerosene
(4)	Carbon dioxide	Paper	Hydrogen	Wood

(1)

(2)

(3)

(4)

Solution

W is natural gas, which is inflammable as well as an automobile fuel.
X is paper, which is combustible, but is neither a fuel nor inflammable.
Y is hydrogen, which is combustible, highly inflammable and a rocket fuel.
Z is wood, which is combustible and is used as a fuel, but it is not inflammable.

Question 10
1 / -0

Hydrogen can be used as a fuel in the form(s) of

A
coal gas

B
water gas

C
liquid hydrogen

D
All of the above

Solution

All of the above mentioned fuels contain hydrogen.
Coal gas is a mixture of gases (chiefly hydrogen, methane, and carbon monoxide) obtained by the destructive distillation of coal.
Water gas is a mixture of carbon monoxide and hydrogen.
Question 11
1 / -0

Why is the flame of an LPG stove blue in colour?

A
Due to incomplete combustion of LPG

B
Due to the presence of carbon particles

C
Due to the presence of dust particles

D
Due to complete combustion of LPG

Solution

The burners in LPG stoves are provided with holes in order to ensure a proper supply of air.
Hence, due to the availability of oxygen in sufficient amounts, complete combustion of the fuel takes place and a clean blue flame is formed.
Hence, option (4) is correct.
Question 12
1 / -0

Which of the following fuels is the best?

A
LPG

B
Kerosene oil

C
Petrol

D
Cow dung

Solution

LPG is the best fuel among the given options because:
It is a clean fuel.
It has a high calorific value.
It is easy to store and transport.
It is easily available and is affordable.
Question 13
1 / -0

Which of the following substances has the highest calorific value?

A
Peat

B
Anthracite

C
Lignite

D
Bituminous coal

Solution

Anthracite is the variety of coal with the highest carbon content and hence, the highest calorific value.
Question 14
1 / -0

Which among the following is an important application of coal?

A
Generation of electricity

B
Writing

C
As a fighting tool by ancestors

D
Making buildings

Solution

In the thermal power plants, coal is used as a fuel to boil the water and produce steam to run the turbine in order to generate electricity.
Question 15
1 / -0

Which of the following statements is/are true regarding the process of carbonisation?

A
Slow conversion of dead vegetation into coal

B
Fast conversion of dead vegetation into coal

C
Burning of carbon compounds to give CO₂

D
Both 2 and 3

Solution

The dead vegetation under the earth slowly gets converted to coal under geothermal conditions.
Since coal is essentially an elemental form of carbon, the process is called carbonisation.
Question 16
1 / -0

Which among the following is not a constituent of coal gas?

A
Sulphur dioxide

B
Hydrogen

C
Methane

D
Carbon monoxide

Solution

Coal gas is a mixture of hydrogen, methane, and carbon monoxide.
Sulphur dioxide is not a component of coal gas.
Question 17
1 / -0

Which of the following forms of carbon has the lowest percentage of carbon?

A
Lignite

B
Anthracite

C
Peat

D
Bituminous

Solution

The percentage of carbon is the lowest in peat and the highest in anthracite.

Question 18

1 / -0

Match the fuels given in the left column with their uses given in the right column.

Fuels	Uses
1. Liquefied Petroleum Gas (LPG)	(a) It is used for generation of electricity.
2. Natural Gas	(b) It is used as a fuel when dried.
3. Coal	(c) It is replacing petrol as a fuel in India.
4. Wood	(d) It is required in gas stoves used at homes.

1 - (d), 2 - (c), 3 - (a), 4 - (b)

1 - (a), 2 - (b), 3 - (c), 4 - (d)

1 - (a), 2 - (d), 3 - (c), 4 - (b)

1 - (a), 2 - (b), 3 - (d), 4 - (c)

Solution

Correct Answer: 1 - (d), 2 - (c), 3 - (a), 4 - (b)
Liquefied Petroleum Gas (LPG) is the chief domestic fuel.
Natural gas is replacing petrol as an automobile fuel in India.
Coal is used in thermal power plants for generating electricity.
Dry wood is used as a fuel.

Question 19
1 / -0

What does the word 'petroleum' mean?

A
Rock oil

B
An ancient sea creature

C
A sea

D
Swamp gas

Solution

'Petra' is a generic word used for rock, and 'oleum' is a dense, corrosive liquid consisting of concentrated sulphuric acid, containing excess sulphur trioxide in solution.
Petroleum is named so because it is a dense corrosive liquid which is derived from the rocks beneath the earth.
Question 20
1 / -0

Which of the following statements regarding fractional distillation of petroleum is/are true?

I. The lower boiling fraction is collected in the upper parts of the fractional column.
II. Natural gas is collected in the uppermost part of the chamber,
III. The temperature is higher in the upper parts of the chamber.

A
I and II only

B
II and III only

C
III only

D
II only

Solution

The lower boiling fractions are collected in the upper parts of the fractional column. Hence, statement I is correct.
Since natural gas has the lowest boiling point amongst all the fractions, it is collected in the uppermost part of the fractional column. Hence, statement II is correct.
The temperature is lower in the upper parts of the chamber. Hence, statement III is incorrect.

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Combustion And Fuel Test - 4

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Combustion And Fuel Test - 4

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SHARING IS CARING

Question 1

Nuclear energy

Wind

Solar energy

Natural gas

Solution

Question 2

High temperature and low pressure

High pressure and low temperature

High temperature and high pressure

Low temperature and low pressure

Solution

Question 3

Only a and b

Only b and c

Only a and c

Only b and d

Solution

Question 4

Catalytic converter

Biogas plant

Electrostatic precipitator

Sedimentation

Solution

Question 5

Forests

Aquatic organisms

Wildlife

Microorganism

Solution

Question 6

methane

carbon monoxide

butane

nitrogen

Solution

Question 7

Coke

Diesel

Paraffin

Kerosene

Solution

Question 8

Compressed Natural Gas

Carbonised Natural Gas

Carbonated Natural Gas

None of the above

Solution

Question 9

(1)

(2)

(3)

(4)

Solution

Question 10

coal gas

water gas

liquid hydrogen

All of the above

Solution

Question 11

Due to incomplete combustion of LPG

Due to the presence of carbon particles

Due to the presence of dust particles

Due to complete combustion of LPG

Solution

Question 12

LPG

Kerosene oil

Petrol

Cow dung

Solution

Burning of carbon compounds to give CO₂