Water gas is _____.

(a)

H₂O_(g)

(b)

CO + H₂O

(c)

CO + H₂

(d)

CO + N₂

Ionic hydrides are formed by _____________

(a)

halogens

(b)

chalogens

(c)

inert gases

(d)

group one elements

Non-stoichiometric hydrides are formed by _____________

(a)

palladium, vanadium

(b)

carbon, nickel

(c)

manganese, lithium

(d)

nitrogen, chlorine

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