Tag: energy management

Questions Related to energy management

An atom bomb works on :

physics energy management electricity from nuclear energy nuclear power nuclear energy

  1. Electrical energy

  2. Heat energy

  3. Mechanical energy

  4. Atomic energy

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Correct Option: D
Explanation:

Atomic energy 

Atomic energy is the energy that is created by splitting apart the nuclei of atoms.  The atomic energy is released during the process of fission.  The basic principle of atom bomb is uncontrolled nuclear fission. 

The essential distinction between X-rays and $\gamma$-rays is that the $\gamma$-rays :

physics energy management electricity from nuclear energy nuclear power nuclear energy

  1. have greater ionizing power than X-rays

  2. emanate from nucleus, white X-rays emanate from outer part of the atom

  3. have smaller wave-length than X-rays

  4. none of the above 

Show answer
Correct Option: A
Explanation:

A 

Gamma-rays have the highest energy in the EMR spectrum and their waves have the shortest Wavelength. Gamma rays are lot more dangerous and hazardous to human health than X-rays. Moreover gamma rays are the highly penertating and highly energetic ionizing radiation. 

Principle of Hydrogen bomb is .................. reactions.

physics energy management electricity from nuclear energy nuclear power nuclear energy

  1. Uncontrolled fusion

  2. Fission

  3. Controlled fusion

  4. None of these

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Correct Option: A

In hydrogen bomb we use the process of

physics energy management electricity from nuclear energy nuclear power nuclear energy

  1. Fusion

  2. Fission

  3. Both (1) & (2)

  4. None of these

Show answer
Correct Option: A
Explanation:

In hydrogen bomb we use the process of fusion.

Hence,
option $A$ is correct answer.

Which bomb works on the principle of Nuclear fusion ?

physics energy management electricity from nuclear energy nuclear power nuclear energy

  1. Atom bomb

  2. Hydrogen bomb

  3. Neutron bomb

  4. Nuclear reactor

Show answer
Correct Option: B
Explanation:

Nuclear fusion is a nuclear reaction in which two or more atomic nuclei at a very high speed and join to form a new type of atomic nucleus. Fusion reactions are high energy reactions in which two lighter atomic  nuclei fuse to form a heavier nucleus. This fusion reaction is taking place in hydrogen bomb.

Heating value of coal is approximately -

biology energy management fuels and fossil fuels solar energy and its applications electric energy generation and environment

  1. 1000-2000 kcal/kg

  2. 2000-4000 kcal/kg

  3. 5000-6500 kcal/kg

  4. 9000-10,500 kcal/kg.

Show answer
Correct Option: C
Explanation:

Heating value of coal is approximately $5000-6500 $  $kcal/kg$

Kerosene burns more rapidly than coke because

biology energy management fuels and fossil fuels solar energy and its applications electric energy generation and environment

  1. It has got more oxygen in it than coke

  2. It is a liquid hydrocarbon

  3. It has a low ignition temperature

  4. None of these

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Correct Option: C

Destructive distillation of coal leads to the formation of

biology energy management fuels and fossil fuels solar energy and its applications electric energy generation and environment

  1. Wood

  2. Kerosene

  3. Amino acid liquor

  4. Charcoal

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Correct Option: C

Which of the following is not an example of spontaneous combustion?

biology energy management fuels and fossil fuels solar energy and its applications electric energy generation and environment

  1. Burning of liquified petroleum gas

  2. Fire caused in coal mines

  3. Dry white phosphorous liberates white fumes on exposure to air

  4. All of these

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Correct Option: A

Which of the following are formed under the earth by the decomposition of plant matter by anaerobic bacteria lying under water?

biology energy management fuels and fossil fuels solar energy and its applications electric energy generation and environment

  1. Coal gas

  2. Petroleum gas

  3. Natural gas

  4. Producer gas

Show answer
Correct Option: A,C
Explanation:

Coal gas and natural gas are formed under the earth by the decomposition of plant matter by anaerobic bacteria lying under the water.

The correct option is A and C.