Which of the following hydrides has the lowest boiling point?

An inorganic salt $(A)$ is decomposed on heating to give two products $(B)$ and $(C)$. Compound $(C)$ is a liquid at room temperature and is neutral to litmus,while the compound $(B)$ is a colourless neutral gas. Compounds $(A)$,$(B)$ and $(C)$ are:

Which physical constant for $H_2O$ has a higher magnitude than $D_2O$?

The temporary hardness of a water sample is due to compound $X$. Boiling this sample converts $X$ to compound $Y$. $X$ and $Y$,respectively,are

Which of the following is heavy water?

The freezing point of heavy water at $1 \ atm$ pressure is: (in $^{\circ}C$)