Nuclear Fission, Reactors and Fuel Cycle

Consider the following statements : Statement-I :India, despite having uranium deposits, depends on coal for most of its electricity production. Statement-II :Uranium, enriched to the extent of at least 60%, is required for the production of electricity. Which one of the following is correct in respect of the above statements?

To meet its rapidly growing energy demand, some opine that India should pursue research and development on thorium as the future fuel of nuclear energy. In this context, what advantage does thorium hold over 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 more energy compared to natural uranium. 3. Thorium produces less harmful waste compared to uranium. Which of the statements given above is/are correct?

The function of heavy water in a nuclear reactor is to