Tag: solar energy and its applications

Questions Related to solar energy and its applications

Sun contains more than __________ of the total mass of the solar system.

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. $90$%

  2. $65$%

  3. $46$%

  4. $99.8$%

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Correct Option: D

Sun loses approximately a weight of ________ every second which is the amount of ${H} _{2}$ gas that the sun turns into energy.

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. $4$ lakh million tons

  2. $4$ million tons

  3. $4$ lakh tons

  4. $40$ lakh tons

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Correct Option: B

The correct order of spatial location of different layer of sun are

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. core-radiative zone-convective zone-photosphere-chromosphere-transition region

  2. core-convective zone-chromosphere-photosphere-radiative zone

  3. core-convective zone-photosphere-chromosphere-convective zone-radiative zone

  4. core-radiative zone-convective zone-chromosphere-convective zone-photosphere

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Correct Option: A


Most of the sources of energy we use represent stored solar energy. Which of the following is not ultimately derived from the Sun's energy?

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. Geothermal energy

  2. Wind Energy

  3. Nuclear energy

  4. BioMass

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Correct Option: C
Explanation:

Nuclear energy is not ultimately derived from the Sun's energy as uses radioactive substances to produce energy.

The sun radiates electromagnetic energy at the rate of $3.9 \times 10^{26}W$. Its radius is $6.96\times 10^8m$.The intensity of sun light at the solar surface will be $-(in \, W/m^2)$

evs solar energy water cycle earth's energy budget solar energy and its applications

  1. $1.4 \times 10^4$

  2. $2.8 \times 10^5$

  3. $4.2 \times 10^6$

  4. $5.6 \times 10^7$

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Correct Option: D
Explanation:

$I=\frac { P }{ { 4\pi { R^{ 2 } } } } =\frac { { 3.9\times { { 10 }^{ 26 } } } }{ { 4\times 3.14\times { { \left( { 6.96\times { { 10 }^{ 8 } } } \right)  }^{ 2 } } } } =5.6\times { 10^{ 7 } }w/{ m^{ 2 } }$

Which of the following is an example of fossil fuel?

evs solar energy fuels and fossil fuels solar energy and its applications electric energy generation and environment

  1. Oxygen gas

  2. Hydrogen Gas

  3. Natural gas

  4. Producer gas

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Correct Option: C
Explanation:

Fuel that is formed from the decay of the dead plants and animals millions of years ago is called fossil fuel. Examples include coal, petroleum, natural gas.

The vast amount of seaweeds present in ocean may provide an endless source of:

evs solar energy fuels and fossil fuels solar energy and its applications electric energy generation and environment

  1. Carbon monoxide

  2. Hydrogen sulphide

  3. Methane

  4. None of these

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Correct Option: C
Explanation:

Seaweed can be used for the production of biofuel. Methane can be produced via anaerobic digestion of seaweeds.

All of the following are the examples of fossil fuels except:

evs solar energy fuels and fossil fuels solar energy and its applications electric energy generation and environment

  1. petroleum

  2. coal

  3. natural gas

  4. charcoal

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Correct Option: D
Explanation:

Charcoal is not a fossil fuel since it is obtained by partially burning the wood.

Which is the main constituent of petroleum gas?

evs solar energy fuels and fossil fuels solar energy and its applications electric energy generation and environment

  1. Methane

  2. Ethane

  3. Butane

  4. Hexane

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Correct Option: C
Explanation:

Liquid petroleum or LPG contains main components as butane and propane with butane forming the major constituents. Sometimes butane is replaced by iso-butane.

Coke is more valuable when used:

evs solar energy fuels and fossil fuels solar energy and its applications electric energy generation and environment

  1. as a fuel for industrial boilers

  2. as an oxidising agent

  3. as a reducing agent

  4. as a fuel in domestic ovens

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Correct Option: C
Explanation:

Coke is majorly used in the extraction of the metals from their ores. It is used as a reducing agent. Hence, coke is more valuable in metal extraction industry, when used as a reducing agent.