Tag: towards green energy

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Multiple choice physics towards green energy electricity from nuclear energy nuclear power nuclear energy

The fusion reactions occur at

  1. low pressures

  2. high temperature

  3. extremely high temperature

  4. high temperature and low presences
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is a duplicate of question 423192 testing the same concept. Nuclear fusion requires extremely high temperatures, approximately 100 million degrees Celsius, to overcome the electrostatic repulsion between positively charged nuclei. At such temperatures, matter exists as plasma and nuclei can fuse. The same principle applies here - fusion is a high-temperature process.

Multiple choice physics towards green energy electricity from nuclear energy nuclear power nuclear energy

Nuclear energy may become an important source of energy in the future.
Which one of the following statements about nuclear energy is NOT true?

  1. Large amounts of energy are produced by a small mass of fuel

  2. Nuclear energy has no harmful effects

  3. Nuclear energy produces heat on the sun

  4. Uranium is an important fuel for nuclear energy
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Nuclear fuels are non-renewable sources of energy and large amount of radioactive materials, which are toxic in nature, are released in the environment which are extremely hazardous to the health of living being for thousands of years. Thus nuclear energy also has some harmful effects.

Whereas the statements given in (A), (C) and (D) are true.

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

The ultimate environmental hazard to mankind is 

  1. Air pollution

  2. Water pollution

  3. Noise pollution

  4. Nuclear pollution
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In modern times the biggest environmental threat to mankind is nuclear pollution as the effects of radiation pollution cannot be repaired or reversed. 

Other forms of pollution can be controlled and ill effects reversed but radiations affect coming generations through genetic mutations. Harmful effects of radioactive pollution were first recorded in 1909 in uranium miners as skin burns, cancers and mutations. Many plants are killed even at low level of radioactivity. Young and recently divided cells are more easily damaged. Delayed effects of radioactive pollution include tumors, cancers, mutations, genetic deformities, and shorter life span. These effects are clearly visible only in subsequent generations.

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

Who was the Indian scientist who was primarily responsible for setting of nuclear reactors in India?

  1. H. J. Bhabha

  2. V. A. Sarabhai

  3. Dr. A. P. J. Abdul Kalam

  4. G. Madhavan Nair
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Dr. Homi Jhehangir Bhabha was the first Indian scientist who initiated to set nuclear reactors in India. He is also known as the ''Father of Nuclear Science".

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

Which of the following were released during accidental leakage in Chernobyl, the three-mile island?

  1. Low-level radiations

  2. Intermediate level radiation

  3. High level radiation

  4. No radiations were released
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Accidental leakage in Chernobyl nuclear power plant occur in April 26, 1986. Due to this high level radiation is get leaked out which cause long term health impact eg cancer and body deformation.

So, the correct option is 'High level radiation'.

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

Which of the following waste is present in coolant water from atomic reactors?

  1. Solid municipal waste

  2. Low-level radioactive waste

  3. High-level radioactive waste

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A nuclear reactor coolant is used to remove heat from the nuclear reactor core and transfer it to electrical generator which produce electricity. All the nuclear power plant use water as a coolant under high pressure. water is non radioactive material so there is low level of radioactive waste in coolant. 

So, the correct option is 'Low-level radioactive wastes'.

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

Which of the following reasons make nuclear waste an extremely potent pollutant?

  1. It causes mutations at a very high rate

  2. It is responsible for heating of Earths surface and atmosphere

  3. It is a very challenging task to provide safe disposal of radioactive wastes

  4. All of the above
Reveal answer Fill a bubble to check yourself
A,C Correct answer
Explanation

Nuclear waste is a very big problem in nuclear power plant due to the emission of harmful radiation which causes mutation in living organisms. Another problem facing in nuclear waste is the disposal of it because disposal is done in very deep in the oceans and there is the risk of leakage of radiation which is harmful to aquatic life also.

so correct options are 'it causes mutations at a very high rate ad it is a very chanllenging task to provide safe disposal of radioactive wastes'.

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

___________ was developed after World War II.

  1. Wind energy

  2. Solar energy

  3. Nuclear power

  4. Thermal power
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Nuclear power technology for electricity generation was developed and implemented in the post-World War II era, specifically in the 1950s. Wind, solar, and thermal power technologies have much older roots or were not the primary focus of post-war industrial development.