Coal and Petroleum Test

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Coal and Petroleum Test - 25

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Weekly Quiz Competition

Question 1
1 / -0

Coal tar has an _________ smell.

A
unpleasant

B
pleasant

C
Both (a) & (b)

D
None of these

Solution

Coal tars are complex and variable mixtures of phenols, polycyclic aromatic hydrocarbons (PAHs), and heterocyclic compounds. Hence have unpleasant smell.
Question 2
1 / -0

What happens during carbonisation?

A
Conversion of organic substance to carbon

B
Conversion to carbon dioxide

C
Conversion of carbon to diamond

D
Conversion of carbon to water

Solution

During carbonisation, organic substances (especially plants and vegetation) is converted into carbon (coal).
Question 3
1 / -0

The fuel used as aviation fuel in jet aircrafts is a special grade of _________ .

A
diesel

B
kerosene

C
petrol

D
none of these

Solution

One of the primary reasons why jets rely on kerosene is due to its low freezing point. Aviation kerosene has a freezing point of -47 °C
Planes fly at extremely high altitudes, which means they spend a lot of airtime in sub-zero temperatures. As a result, planes need to use fuel with a low freezing point – like kerosene - so the fuel functions properly without solidifying during the flight.
Question 4
1 / -0

Coal tar is used in manufacture of _________.

A
synthetic dyes

B
drugs

C
explosives

D
all of these

Solution

Coal tar is to make plastics, paints, dyes, naphthalene balls and explosives, Pharmaceutical Industry.
Question 5
1 / -0

Coal gas is mixture of:

A
$$C_4H_{10}+H_2+CO_2$$

B
$$CH_4+H_2+CO_2$$

C
$$CH_4+H_2+CO$$

D
$$C_2H_6 + H_2 + CO_2$$

Solution

The coal gas contains calorific gases like methane (35%), hydrogen (50%), and carbon-monoxide (10%), along with other volatile unsaturated hydrocarbons formed by the destructive distillation of coal.

Hence, option C is correct.
Question 6
1 / -0

Which of the following is not required for the formation of coal?

A
Dead organisms

B
Dead vegetation

C
Presence of oxygen

D
High pressure

Solution

Carbonization of dead plants and animals does not happen in the presence of oxygen. This is the procedure that takes place inside the earth's crust under high pressure and temperature.
It is believed that millions of years ago, the ground below the forests was split open by natural forces such as earthquakes and volcanoes.

The forests got buried under the surface of the earth. Thus, the plants had no contact with oxygen. Successive layers of sediments sealed the buried plants. Over millions of years, these deposits were subjected to tremendous pressure and heat which finally transformed them into coal.

Option $$C$$ is correct.
Question 7
1 / -0

Which is used in extraction of metals?

A
Coal gas

B
Coal tar

C
Coke

D
Petrol

Solution

Coke is used in manufacturing of steel and extraction of many metal.
Question 8
1 / -0

Which derivative of coal is more viscous in nature?

A
Coke

B
Coal tar

C
Coal gas

D
Graphite

Solution

Coal tar is basically seen as a very thick liquid used in making roads. It is more viscous in nature than coal.
Option $$B$$ is correct.
Question 9
1 / -0

Coal gas is the by-product of which process?

A
Coal processing to get coke

B
Carbonisation

C
Combustion of carbon dioxide

D
Burning of petroleum

Solution

Coal gas is obtained when coal is processed to get coke. Carbonisation is a different process. In this process, coal is formed from dead vegetation. The other two options (combustion of carbon dioxide, burning of petroleum) do not give coal gas.
Question 10
1 / -0

Among the following, which is not the component of coal gas?

A
Methane

B
Hydrogen

C
Oxygen

D
Carbon dioxide

Solution

Coal gas contains calorific gases like hydrogen, methane, carbon monoxide, and many hydrocarbons and non-calorific gases like nitrogen and carbon dioxide.
The composition of coal gas varied according to the type of coal and the temperature of carbonization. Typical figures were:
hydrogen 50%
methane 35%
carbon monoxide 10%
ethylene 5%

Hence, the correct option is $$\text{C}$$

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Re-Attempt Weekly Quiz Competition

Coal and Petroleum Test - 25

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Coal and Petroleum Test - 25

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SHARING IS CARING

Question 1

unpleasant

pleasant

Both (a) & (b)

None of these

Solution

Question 2

Conversion of organic substance to carbon

Conversion to carbon dioxide

Conversion of carbon to diamond

Conversion of carbon to water

Solution

Question 3

diesel

kerosene

petrol

none of these

Solution

Question 4

synthetic dyes

drugs

explosives

all of these

Solution

Question 5

$$C_4H_{10}+H_2+CO_2$$

$$CH_4+H_2+CO_2$$

$$CH_4+H_2+CO$$

$$C_2H_6 + H_2 + CO_2$$

Solution

Question 6

Dead organisms

Dead vegetation

Presence of oxygen

High pressure

Solution

Question 7

Coal gas

Coal tar

Coke

Petrol

Solution

Question 8

Coke

Coal tar

Coal gas

Graphite

Solution

Question 9

Coal processing to get coke

Carbonisation

Combustion of carbon dioxide

Burning of petroleum

Solution

Question 10

Methane

Hydrogen

Oxygen

Carbon dioxide

Solution

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