Multiple choice

Which of the following statements is true?

  1. The radiant energy of Sun is due to nuclear fission.

  2. Loss of α-particle is equivalent to loss of two protons.

  3. Gamma rays are high energy electrons.

  4. Artificial radioactivity was first discovered by H. Becquerel.

  5. Fission of 1 mole of U-235 release 20.41 x 109 KJ energy.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Fission of an atom of U-235 releases 211.5 MeV energy. Fission of 1 mole of U-235 releases 20.41 x 109 KJ energy. Fission of 1 g of U-235 releases 8.68 x 107 KJ energy.

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