Government CDS Question:

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Which one of the following is heavy water used in nuclear reactor?
(A) Water having molecular weight 18 amu
(B) Water having molecular weight 20 amu
(C) Water at 4°C but having molecular weight 19 amu
(D) Water below the ice in a frozen sea

Government CDS Interview Question
Government CDS Interview Question

Answer:

(B) Water having molecular weight 20 amu

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The rusting of iron nail—
(A) decreases its weight
(B) increases its weight
(C) does not affect weight but iron is oxidized
(D) does not affect weight but iron is reduced		Which one of the following pairs is not correctly matched?
Country — Currency
(A) Brazil — Reais
(B) China — Yuan
(C) Mexico — Pesos
(D) Thailand — Ringgit