Which of the following statement(s) is/are correct?

1. Nuclear fusion involves the usage of uranium and plutonium neutrons to slam into a larger atom and split them into multiple smaller atoms.

2. Nuclear fission involves slamming two atoms of hydrogen and helium together to form a heavier atom.

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Which of the following is/are incorrectly matched?

1. BHUVAN - Geo-portal developed by ISRO

2. VEDAS - Data repository of all meteorological missions of ISRO

3. MOSDAC - Online geo-processing platform meant for academia, research and problem solving

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Which of the following statement(s) is/are correct about the ‘Sela Tunnel’?

1. The tunnel is being constructed at Arunachal Pradesh.

2. It is the longest bi-lane road tunnel in the world at an altitude of 13,800 feet.

3. It will provide all weather connectivity to Tawang.

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Which of the following statement(s) is/are correct?

1. A comet derives the light from the heat generated by the Earth’s atmosphere.

2. An asteroid orbits the sun and is made of rock or metal and is larger than a meteoroid.

3. A meteorite is a meteor that reaches the surface of the Earth.

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Which of the following statement(s) is/are correct?

1. Grey hydrogen is derived from the fossil fuels with carbon capture and storage options.

2. Green hydrogen is generated entirely from renewable power sources in which the electricity is generated using renewable energy to split water into hydrogen and oxygen.

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