Hydrogen and It's Compounds

Which of the following is added to remove permanent hardness of water?

Which of the following acts as interstitial hydride?

ortho and para form of hydrogen have

Which one of the following is correct order of given isotopes?
I. T2 > D2 > P2 (order of boiling point)
II. T2 > D2 > P2 (order of bond energy)
III. T2 = D2 = P2 (order of bond length)
IV. T2 < D2 < P2 (order of reactivity with Cl2)

Some statements about heavy water are given below
1. Heavy water is used as a moderator in nuclear reactors.
2. Heavy water is more associated than ordinary water.
3. Heavy water is more effective solvent than ordinary water.
Which of the a...