Tag: solar energy

Questions Related to solar energy

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.

In chulhas, gaps are left between the logs are there to :

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

  1. to decrease the ignition temperature of the fuel

  2. to allow the air to enter and facilitate fuel burning

  3. to cut off the supply of air

  4. all of these

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Correct Option: B
Explanation:

In chulhas, gaps are left between the logs are there to to decrease the ignition temperature of the fuel

Fire is a form of combustion

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

  1. True

  2. False

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Correct Option: A

_________ is formed by the transformation of trees buried inside the earth millions of years ago.

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

  1. Biogas

  2. Coal

  3. Diesel

  4. Iron

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Correct Option: B

The fuel formed by the marine animal and plant remnants is :

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

  1. Petroleum

  2. Electricity

  3. Biogas

  4. Coal

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Correct Option: A
Explanation:

A) Petroleum

Petroleum products include transportation fuels; fuel oils for heating and electricity generation; asphalt and road oil; and feedstocks for making the chemicals, plastics, and synthetic materials that are in nearly everything we use.

A chemical, when burned, produces energy if :

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

  1. The energy absorbed by product is more than the energy released by reactant.

  2. The energy absorbed by product is less than the energy released by reactant.

  3. The energy released by reactant is equal to energy absorbed by product.

  4. It reacts with carbon dioxide.

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Correct Option: B

The energy possessed by coal, petroleum and natural gas is called

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

  1. kinetic energy

  2. potential energy

  3. chemical energy

  4. hydro energy

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Correct Option: C
Explanation:

The energy possessed by fossil fuels such as coal, petroleum and natural gas is called the chemical energy or fuel energy. These fuels contain chemical energy stored in them.