Non-stoichiometric hydrides are formed by _____________

(a)

palladium, vanadium

(b)

carbon, nickel

(c)

manganese, lithium

(d)

nitrogen, chlorine

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 hardness of water can be determined by volumetrically using the reagent _____________

(a)

sodium thio sulphate

(b)

potassium permanganate

(c)

hydrogen peroxide

(d)

EDTA

Zeolite used to soften hardness of water is hydrated _____________

(a)

Sodium aluminium silicate

(b)

Calcium aluminium silicate

(c)

Zinc aluminium borate

(d)

Lithium aluminium hydride

A commercial sample of hydrogen peroxide marked as 100 volume H₂O₂, it means that _____________

(a)

1 ml of H₂O₂ will give 100 ml O₂ at STP

(b)

1 L of H₂O₂ will give 100 ml O₂ at STP

(c)

1 L of H₂O₂ will give 22.4 L O₂

(d)

1 ml of H₂O₂  will give 1 mole of O₂ at STP

Intermolecular H-bonding is present in __________

(a)

HF

(b)

H₂O

(c)

C₂H₅OH

(d)

All of these

The intramolecular hydrogen bonding in molecules lead to _____________

(a)

high melting point

(b)

low boiling point

(c)

high boiling point

(d)

high solubility in water

Which one of the following bond is stronger?

(a)

Covalent

(b)

H-bond

(c)

Vanderwaal's force

(d)

All of these

Intramolecular H-bonding is present in _________

(a)

o-nitrophenol

(b)

salicylic acid

(c)

salicylaldlehyde

(d)

all of these

The element which does not contain a neutron is _____________

(a)

hydrogen

(b)

helium

(c)

chlorine

(d)

none of the above

Explain why hydrogen is not placed with the halogen in the periodic table.

An the cube at 0° C is placed in some liquid water at 0⁰C, the ice cube sinks - Why? What will happen to ice at 0⁰C placed in liquid water at 0⁰C? 

Discuss the three types of Covalent hydrides.

Predict which of the following hydrides is a gas on a solid
(a) BCI
(b) NaH 
Give your reason.

Write chemical equation for the following reactions.
i) reaction of hydrogen with tungsten (VI) oxide on heating.
(ii) hydrogen gas and chlorine gas.

Explain the laboratory preparation of dihyodrogen.

Why is water molecule polar?

Distinguish between (i) hard water and soft water 

Explain why HCl is a gas and HF is a liquid?

Give any two methods of preparation of H₂O₂.

Why hydrogen behaves both as a halogen and as an alkali metal?

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

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