Which hydride is most acidic?

Platinised asbestos used as a catalyst in the manufacture of H₂SO₄ is an example of

The reaction in the Kipp's apparatus stops when the outlet is closed from the top because

Oxalic acid when heated with conc. H₂SO₄ gives

Bond angle in O₃ molecule is

Which metal sticks to a glass plate after treatment with ozone

Ozone reacts with

The geometry of H₂S and its dipole moment are

Large deposits of sulphur in nature are found in the form of

Which compound has bond angle nearly 90°?