Tag: generation of electricity

Questions Related to generation of electricity

The first nuclear explosion was conducted by U.S.A in

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. July 1945

  2. August 1945

  3. September 1944

  4. June 1944

Show answer
Correct Option: B

Problem associated with nuclear power plants is

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. Emmission of hazardous waste

  2. Disposal of radioactive waste

  3. Thermal pollution

  4. All of the above

Show answer
Correct Option: D
Explanation:

A nuclear power plant is a thermal power station in which the heat source is a nuclear reactor. The heat is used to generate steam that drives a steam turbine connected to a generator that produces electricity.  The high temperature produced during a nuclear reaction causes thermal pollution thereby affecting the life forms. Radiations are continuously released by radioactive waste produced by these power plants that affect mankind for generations making it hazardous. Thus the correct answer is option D. 

Atomic bomb was used during world war II in the year

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. 1939

  2. 1945

  3. 1941

  4. 1943

Show answer
Correct Option: B

Assertion: X and Y rays are emitted by disintegration of atomic nuclei of radioactive elements Reason: Nuclear fall out is shown by radioactive elements

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  3. If the assertion is true but the reason is false

  4. If both the assertion and reason are false

  5. If the assertion is false but reason is true

Show answer
Correct Option: B

A non-ecofriendly source of energy is

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. Tidal energy

  2. Wind energy

  3. Solar energy

  4. Nuclear energy

Show answer
Correct Option: D
Explanation:

Tidal energy, wind energy and solar energy are non-polluting sources of energy. They do not harm the environment. Nuclear energy is obtained by fission reaction carried out in nuclear reactors. Dumping of radioactive wastes generated during energy production using nuclear reaction causes serious environmental hazards making it non-ecofriendly. Thus the correct answer is option D.

The first disaster of nuclear reactor occurred at

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. Trombay

  2. Narora

  3. Chemobyl

  4. TMI-2

Show answer
Correct Option: D

Chernobyl tragedy occurred in

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. 26th May, 1966

  2. 26th April, 1986

  3. 6th August, 1947

  4. 9th May, 1945

Show answer
Correct Option: B
Explanation:

Chernobyl is located in Ukraine. In April 1986, power reactor in Chernobyl burst due to over heating causing leakage of radioactive substances and radiations.

Problem associated with nuclear power plant is 

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. Thermal pollution

  2. Emission of hazardous radio-nuclides

  3. Disposal of radioactive waste

  4. All of the above

Show answer
Correct Option: D
Explanation:

Some thermal power stations exchange 60 to 70% of their thermal energy by cycling with a body of water or by evaporating water through a cooling tower. 

This thermal efficiency creates more waste heat. Most commercial nuclear power plants release gaseous and liquid radiological effluents into the environment as a byproduct. 
The nuclear fission of uranium-235 produces large quantities of intermediate mass radioisotopes. The mass distribution of these radioisotopes peaks at about mass numbers 95 and 137 , and most of them are radioactive. The most dangerous for environmental release are cesium and strontium because of their intermediate half-lives and entry in the food chain.

The term "Nuclear winter" is associated with

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. Nuclear War

  2. Nuclear disarmament

  3. Nuclear weapon testing

  4. After effect of a nuclear explosion

Show answer
Correct Option: D

Which of the following is the correct sequence of disposal of high-level radioactive wastes?
1. They are kept in thick leak proof containers
2. The wastes are concentrated to reduce their bulk
3. They are stored in special protective shields during handling and transport
4. The wastes are then buried deep down in the earth or undersea bed

biology towards green energy solar power plant generation of electricity production of electricity from solar energy

  1. 2-1-3-4

  2. 3-2-1-4

  3. 3-1-2-4

  4. 2-3-1-4

Show answer
Correct Option: B
Explanation:

Before disposal of high level of radioactive waste which is very harmful for living organism, there is procedure to dispose it. 

Radioactive waste is stored in special protective shield before handling and transport. After that it is reduce to minimum amount and kept in leak proof containers before depose it, so that it cant harm environment around. Waste should be dispose into deep down earth or under sea bed for misuse.
So, the correct option is '3-2-1-4'.