Combustion And Flame Test

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Combustion And Flame Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

Coal formation results from which of the following natural processes?

A
Anaerobic degradation of cellulose material of plants.

B
Degradation of cellulose material of animals.

C
Degradation of both plants and animals.

D
Aerobic degradation of cellulose material of plants.
Question 2
1 / -0

Which of the following options is a non combustible substance?

A
Paper

B
Wood

C
Iron

D
Wool
Question 3
1 / -0

Which of the following options correctly defines calorific value of a fuel?

A
Heat energy liberated by complete combustion of 1 g of fuel

B
Heat energy liberated by complete combustion of 1 kg of fuel

C
1 kJ of energy liberated by complete combustion of any amount of fuel

D
None of these

Solution

The amount of heat produced by the complete combustion of a material or a fuel is called its calorific value.
It is measured in units of energy per amount of material, e.g. kJ/kg.
Question 4
1 / -0

Which of the following options is not the characteristic of a good fuel?

A
It has a high calorific value

B
It has a high ignition temperature

C
It does not produce smoke

D
It does not leave behind excess ash
Question 5
1 / -0

Which of the following options is not a constituent of LPG used in gas cylinders meant for domestic usage?

A
Butane

B
Isobutane

C
Hydrogen

D
Ethyl mercaptan
Question 6
1 / -0

Which of the following sources of energy, after refining, is also used as a fuel for jet airplanes?

A
LPG

B
Petrol

C
Diesel

D
Kerosene

Solution

Kerosene is product of refining of petroleum. It is used as a fuel for jet airplanes.
Question 7
1 / -0

Which of the following substances is used for extraction of iron from its ore?

A
Coal gas

B
Coal tar

C
Coal

D
Coke

Solution

Coke is a pure form of carbon and is used for the reduction of iron oxide to extract crude metal.
Question 8
1 / -0

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

A
Sulphur dioxide

B
Hydrogen

C
Methane

D
Carbon monoxide
Question 9
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 form of coal which has the highest carbon content and hence, the highest calorific value.

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Re-Attempt Weekly Quiz Competition

Combustion And Flame Test - 3

Result

Combustion And Flame Test - 3

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SHARING IS CARING

Question 1

Anaerobic degradation of cellulose material of plants.

Degradation of cellulose material of animals.

Degradation of both plants and animals.

Aerobic degradation of cellulose material of plants.

Question 2

Paper

Wood

Iron

Wool

Question 3

Heat energy liberated by complete combustion of 1 g of fuel

Heat energy liberated by complete combustion of 1 kg of fuel

1 kJ of energy liberated by complete combustion of any amount of fuel

None of these

Solution

Question 4

It has a high calorific value

It has a high ignition temperature

It does not produce smoke

It does not leave behind excess ash

Question 5

Butane

Isobutane

Hydrogen

Ethyl mercaptan

Question 6

LPG

Petrol

Diesel

Kerosene

Solution

Question 7

Coal gas

Coal tar

Coal

Coke

Solution

Question 8

Sulphur dioxide

Hydrogen

Methane

Carbon monoxide

Question 9

Peat

Anthracite

Lignite

Bituminous coal

Solution

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