Sources of Energy Test

Result

Sources of Energy Test - 39

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Weekly Quiz Competition

Question 1
1 / -0

Large eco-systems are destroyed when submerged under the water in dams. The submerged vegetation rots and give rise to a green house gas named ________.

A
Ethane

B
Methane

C
Propane

D
Butane

Solution

Large eco-systems are destroyed when submerged under the water in dams. The vegetation which is submerged rots under anaerobic conditions and gives rise to large amounts of methane which is also a green-house gas.
Question 2
1 / -0

Mirrors are used in solar cookers to

A
Achieve a higher temperature inside the cooker

B
Focus the sun rays into the cooker

C
Act as reflector of sunlight

D
All of the above

Solution

Mirrors used in solar cookers act as a reflector that focuses the sunlight into the cooker and thereby increases the temperature inside it.
Question 3
1 / -0

The above figure is the schematic diagram of a bio-gas plant.
The __________ is a sealed chamber in which there is no oxygen.

A
Gas tank

B
Gas Outlet

C
Slurry

D
Digester

Solution

The digester is a sealed chamber in which there is no oxygen. A slurry of cow-dung and water is made in the mixing tank from where it is fed into the digester.
Question 4
1 / -0

Solar cookers are more useful in cloudy weather. The statement given is -

A
True

B
False

C
Ambiguous

D
Insufficient data

Solution

The solar cooker cannot be used at night and during cloudy weather. It takes more time to cook food. The direction of the solar cooker is to be changed continuously towards the direction of the Sun.
Question 5
1 / -0

The function of the glass sheet in a solar cooker is

A
To absorb heat

B
To trap heat inside

C
Allow to escape heat

D
To reflect sunlight

Solution

The function of the glass sheet in a solar cooker is to trap heat inside and thus, help to raise the temperature inside the cooker to a sufficiently high degree to cook the food.
Question 6
1 / -0

__________ is popularly known as 'gobar-gas'.

A
Biomass

B
Bio-gas

C
Natural gas

D
Dry gas

Solution

Cow-dung, various plant materials like the residue after harvesting the crops, vegetable waste and sewage are decomposed in the absence of oxygen to give bio-gas. Since the starting material is mainly cow-dung, it is popularly known as gobar-gas.
Question 7
1 / -0

________________ do not require oxygen to decompose or break down complex compounds of the cow-dung slurry.

A
Aerobic micro-organisms

B
Anaerobic micro-organisms

C
Both

D
None

Solution

Anaerobic micro-organisms do not require oxygen to decompose or break down complex compounds of the cow-dung slurry.
In bio gas plant It takes a few days for the anaerobic decomposition process to be complete and generate gases like methane, carbon dioxide, hydrogen and hydrogen sulphide.Methane is used for energy purposes by combustion.
Question 8
1 / -0

The largest wind energy farm has been established near ___________ in Tamil Nadu and it generates __________ of electricity.

A
Chennai, $$380\ MW$$

B
Kanyakumari, $$380\ MW$$

C
Chennai, $$200\ MW$$

D
Kanyakumari, $$200\ MW$$

Solution

The largest wind energy farm has been established near Kanyakumari in Tamil Nadu and it generates 380 MW of electricity.
Question 9
1 / -0

Unequal heating of the landmass and water bodies by solar radiation generates air movement and causes __________.

A
Rain

B
Wind

C
Light

D
Sound

Solution

Unequal heating of the landmass and water bodies by solar radiation generates air movement and causes winds to blow.
Question 10
1 / -0

'Bio-gas plant is an efficient method of waste-disposal besides supplying energy and manure.' The statement is -

A
True

B
False

C
Ambiguous

D
Data Insufficient

Solution

The large-scale utilization of bio-waste and sewage material provides a safe and efficient method of waste-disposal besides supplying energy and manure.

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Re-Attempt Weekly Quiz Competition

Sources of Energy Test - 39

Result

Sources of Energy Test - 39

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SHARING IS CARING

Question 1

Ethane

Methane

Propane

Butane

Solution

Question 2

Achieve a higher temperature inside the cooker

Focus the sun rays into the cooker

Act as reflector of sunlight

All of the above

Solution

Question 3

Gas tank

Gas Outlet

Slurry

Digester

Solution

Question 4

True

False

Ambiguous

Insufficient data

Solution

Question 5

To absorb heat

To trap heat inside

Allow to escape heat

To reflect sunlight

Solution

Question 6

Biomass

Bio-gas

Natural gas

Dry gas

Solution

Question 7

Aerobic micro-organisms

Anaerobic micro-organisms

Both

None

Solution

Question 8

Chennai, $$380\ MW$$

Kanyakumari, $$380\ MW$$

Chennai, $$200\ MW$$

Kanyakumari, $$200\ MW$$

Solution

Question 9

Rain

Wind

Light

Sound

Solution

Question 10

True

False

Ambiguous

Data Insufficient

Solution

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