Home PYQs UPPSC UPPSC MCQs Prelims 2009 (GS Paper I)

Question

The inexhaustible source of energy of the star due to:

  1. Conversion of Hydrogen to Helium
  2. Conversion of Helium to Hydrogen
  3. Decay of radioactive elements
  4. Excess of oxygen that helps burning and release of energy

Answer:

Option A: Conversion of Hydrogen to Helium

Detailed Solution:

The correct answer is “ Conversion of Hydrogen to Helium”.

The inexhaustible source of energy in stars is due to the conversion of hydrogen to helium. Stars act like nuclear reactors, where hydrogen atoms combine to form helium atoms through a process called fusion.