Which element is used as moderator in nuclear reactor? by A. Light water B. Dense water C. Freshwater D. Heavy water Related MCQs:Which metallic element is liquid at room temperature?Nuclear radiation is emitted by those elements whose:Which element does not occur in nature but can be produced artificially?Nuclear Physics MCQsWhich is the common element in universe?Which element is required for solar energy conversion ______?Which is the most common element in atmosphere?