Which of the following statement s is are correct about pressurized heavy water reactor PHWR 1 ...........

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Which of the following statement(s) is/are correct about pressurized heavy water reactor (PHWR)?

1. Unenriched natural uranium is used as its fuel.

2. Heavy water is used as its coolant and moderator.

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

1 only

2 only

Both

None

Explanation:

About pressurized heavy water reactor (PHWR)
A pressurized heavy water reactor (PHWR) is a nuclear power reactor, commonly using unenriched natural uranium as its fuel, that uses heavy water (deuterium oxide D2O) as its coolant and moderator.
The heavy water coolant is kept under pressure, allowing it to be heated to higher temperatures without boiling, much as in a typical pressurized water reactor.