Tag: electric energy generation and environment

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Questions Related to electric energy generation and environment

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

Coke is more valuable when used:

  1. as a fuel for industrial boilers

  2. as an oxidising agent

  3. as a reducing agent

  4. as a fuel in domestic ovens
Reveal answer Fill a bubble to check yourself
C Correct answer
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.

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

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

  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
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

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

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

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

  1. Petroleum

  2. Electricity

  3. Biogas

  4. Coal
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

A chemical, when burned, produces energy if :

  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.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A chemical reaction produces energy (exothermic) when the potential energy of the products is lower than that of the reactants, meaning the energy released by forming product bonds is greater than the energy absorbed to break reactant bonds.