Water gas is _____________

(a)

H₂O_(g)

(b)

CO + H₂O

(c)

CO + H₂

(d)

CO + N₂

If a body of a fish contains 1.2 g hydrogen in its total body mass, if all the hydrogen is replaced with deuterium then the increase in body weight of the fish will be ______________

(a)

1.2 g

(b)

2.4 g

(c)

3.6 g

(d)

\(\sqrt{4.8}\)g

The cause of permanent hardness of water is due to _____________

(a)

Ca(HCO₃)₂

(b)

Mg(HCO₃)₂

(c)

CaCl₂

(d)

MgCO₃

Deuterium consist of _____________

(a)

one electron, two proton, three neutron

(b)

one electron, one proton, one neutron

(c)

two electron, one proton, one neutron

(d)

three electron, two proton, one neutron

The radioactive isotope of hydrogen is __________

(a)

protium

(b)

deuterium

(c)

tritium

(d)

nascent hydrogen

Discuss the three types of Covalent hydrides.

NH₃ has exceptionally high melting point and boiling point as compared to those of the hydrides of the remaining element of group 15. Explain.

Why interstitial hydrides have a lower density than the parent metal.

How is tritium prepared?

How is deuterium prepared from heavy water?

Give the uses of heavy water?

Explain the exchange reactions of deuterium.

Mention the uses of deuterium.

Water is a useful solvent. Which properties make water as a good solvent?

List out the properties that allow water to play a key role in the biosphere.

Explain preparation of hydrogen using electrolysis.

Compare the structures of H₂O and H₂O₂ .

Conc. H₂SO₄ cannot be used for drying hydrogen gas. Why?

Write a note on application of hydrogen in cutting and welding purpose.