Sources of Energy Test

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Sources of Energy Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

Ocean Thermal Energy can be utilised when the temperature difference between the water at the surface and water at depths up to 2 km is

A
10°C or more

B
15°C or more

C
20°C or more

D
None of these

Solution

Ocean Thermal Energy can be utilised when the temperature difference between the water at the surface and water at depths up to 2 km is 20^oC or more.
Question 2
1 / -0

What is the magnitude of Solar constant?

A
1400 J/m²sec

B
1700 J/m²sec

C
1500 J/m²sec

D
1600 J/m²sec

Solution

The magnitude of solar constant is approximately 1400 J/m² sec or 1.4 KJ/ m²sec or 1.4 kW/m².
Question 3
1 / -0

Which of the following options is one of the property of glass?

A
It allows all wavelengths of infrared radiations to pass through it.

B
Its allows only short wavelength infrared radiations to pass through it.

C
Its allows only longer wavelength infrared radiations to pass through it.

D
It does not allow infrared radiations of any wavelength to pass through it.

Solution

Glass allows only short wavelength infrared radiations to pass through it. It can be seen in greenhouse effect where heat builds up inside the car.
Question 4
1 / -0

Which of the following processes is involved in tidal energy?

A
The vapours of volatile liquid like ammonia are used to run the turbine of a generator.

B
Difference in sea levels gives us tidal energy.

C
The kinetic energy possessed by huge waves near the seashore can be trapped to generate electricity.

D
All of the above

Solution

The energy possessed by rising and falling tides, i.e. the difference in sea levels gives us tidal energy.
Question 5
1 / -0

___________ energy acts as the basic source of energy in thermal power plants.

A
Kinetic

B
Mechanical

C
Potential

D
Chemical

Solution

Chemical energy is the basic source of energy in thermal power plants. Chemical energy is produced by the burning of coal in thermal power plants and then converting it into electrical energy.
Question 6
1 / -0

Which of the following statements is wrong?

A
In a biogas plant, the slurry left behind is removed periodically and used as a manure.

B
The biogas is stored in the gas tank above the digester from which it is drawn through pipes for use.

C
Biogas burns without smoke and leaves no residue like ash in wood, charcoal and coal burning.

D
Anaerobic microorganisms, in the presence of oxygen, decompose or break down complex compounds of cow dung slurry.

Solution

Options (1), (2) and (3) are correct but (4) statement is incorrect as anaerobic microorganisms are those, which break down complex compounds of cow-dung slurry in the absence of O₂.
Question 7
1 / -0

The oxides of which of the following elements is not released during burning of fuels?

A
Carbon

B
Nitrogen

C
Phosphorus

D
Sulphur

Solution

Fuels are complex mixture of hydrocarbons and compounds of carbon with oxygen, nitrogen and sulphur. So, on burning of fuels, those compounds are released. Phosphorus is not released during burning of fuels.
Question 8
1 / -0

One mega electron volt (MeV) is equivalent to ____________.

A
10⁶eV

B
1.6 × 10^-13 J

C
1.6 × 10^-19 J

D
Both (1) and (2)

Solution

One mega electron volt, i.e. M_eV = 10⁶eV

Also, 1 eV = 10^-19 J

∴ 1 MeV = 1.6 × 10^-13 J

Since both options (1) and (2) are correct.
Question 9
1 / -0

Conditions under which nuclear fusion takes place ______________.

A
High temperature and low pressure

B
Low pressure and low temperature

C
Low temperature and low pressure

D
High pressure and high temperature

Solution

The condition under which nuclear fusion takes place is high pressure and high temperature. Temperature of the order of 10⁷ K is required to start nuclear fusion reaction. That is why it is known as thermonuclear reaction.

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Sources of Energy Test - 1

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Question 1

10°C or more

15°C or more

20°C or more

None of these

Solution

Question 2

1400 J/m2sec

1700 J/m2sec

1500 J/m2sec

1600 J/m2sec

Solution

Question 3

It allows all wavelengths of infrared radiations to pass through it.

Its allows only short wavelength infrared radiations to pass through it.

Its allows only longer wavelength infrared radiations to pass through it.

It does not allow infrared radiations of any wavelength to pass through it.

Solution

Question 4

The vapours of volatile liquid like ammonia are used to run the turbine of a generator.

Difference in sea levels gives us tidal energy.

The kinetic energy possessed by huge waves near the seashore can be trapped to generate electricity.

All of the above

Solution

Question 5

Kinetic

Mechanical

Potential

Chemical

Solution

Question 6

In a biogas plant, the slurry left behind is removed periodically and used as a manure.

The biogas is stored in the gas tank above the digester from which it is drawn through pipes for use.

Biogas burns without smoke and leaves no residue like ash in wood, charcoal and coal burning.

Anaerobic microorganisms, in the presence of oxygen, decompose or break down complex compounds of cow dung slurry.

Solution

Question 7

Carbon

Nitrogen

Phosphorus

Sulphur

Solution

Question 8

106 eV

1.6 × 10-13 J

1.6 × 10-19 J

Both (1) and (2)

Solution

Question 9

High temperature and low pressure

Low pressure and low temperature

Low temperature and low pressure

High pressure and high temperature

Solution

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1400 J/m²sec

1700 J/m²sec

1500 J/m²sec

1600 J/m²sec

10⁶eV

1.6 × 10^-13 J

1.6 × 10^-19 J