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Photovoltaic cells are related to:
Comprehensive collection of questions from General Science asked in recent state service examinations. Each question is verified with official answer keys and step-by-step bilingual solutions.
Photovoltaic cells are related to:
In India, why are some nuclear reactors kept under 'IAEA Safeguards' while others are not?
Identify the mineral not related to atomic power:
The working principle of an atom bomb is nuclear fission of uranium, and the working principle of a hydrogen bomb is:
The inexhaustible source of energy in stars is due to:
With reference to solar water pumps, consider the following statements: 1. Solar power can be used for running surface pumps and not for submersible pumps. 2. Solar power can be used for running centrifugal pumps and not for piston pumps. Which of the statements given above is/are correct?
Which of the following is India's first nuclear power plant?
The final stable product of the radioactive decay series of uranium is:
The half-life of a radioactive element is 5 years. The fraction of the radioactive substance that remains after 20 years is:
Who was the director of BARC (at the time of the question)?
Consider the following statements: A self-sustained nuclear chain reaction is feasible in a nuclear reactor because: 1. More neutrons are released in each fission reaction than are consumed. 2. Neutrons immediately take part in fission processes. 3. Fast neutrons are moderated by graphite. 4. Every neutron released initiates further fission. Which of these statements are correct?
Stars derive their energy in which of the following ways?
An atomic reactor is:
In modern medical science, nuclear medicines are emerging as potent tools for diagnosis and therapy. These are actually:
A radioactive element of which large reserves are found in India is:
In the context of developing thorium as future nuclear fuel, how is thorium more advantageous than uranium? 1. Thorium is far more abundant in nature than uranium. 2. On the basis of per unit mass of mined mineral, thorium can generate much more energy than natural uranium. 3. Thorium produces less harmful nuclear waste compared to uranium. Which of the statements given above is/are correct?
Which of the following is not a nuclear fuel?
Which of the following cannot be used as a nuclear fuel?
Radioactive substances emit:
The source of energy produced by the Sun is:
The half-life of a radioactive substance is 4 months. The time required for three-fourths of this substance to decay will be:
The half-life of a radioactive substance is 10 days; this implies that:
Photovoltaic cells are:
Consider the following statements regarding nuclear fusion reactors: i. They work on the principle of fission of heavy nuclei. ii. They usually have a Tokamak design. iii. They operate at very high temperatures. Of these:
The difference between a nuclear reactor and an atomic bomb is that: