In the laboratory preparation of ammonia, the flask is placed in a slanting position so as to

A. prevent condensed water from breaking the reaction flask

B. enable the proper mixing of the reactions in the flask

C. enhance the speed of the reaction

D. prevent formation of precipitate

Which of the gases is employed as an anaesthesia?

A. N ₂O

B. NO₂

C. NH₃

D. NO

Sulphur (IV)oxide is a strong reducing agent in the presence of water due to the formation of

A. hydroxide ion

B. sulpgur (Vl)oxide

C. hydrogen sulhide

D. trioxosulphate (IV) salt

A metal that forms soluble trioxosulphate (IV) ion is

A. barium

B. potassium

C. manganese

D. aluminium

Copper is displaced from the solution of its salts by most metals because it

A. is a transition element

B. is at the bottom of the activity series

C. is very reactive

D. has completely filled 3d-orbitals

The coloured nature of transition metal ions are associated with their partially filled

A. f- orbital

B. s- orbital

C. p-orbital

D. d-orbital

Aluminium containers are frequently used to transport trioxonitrate (V) acid because aluminium

A. has a silvery-white appearance

B. has a low density

C. does not react with the acid

D. does not corrode

2- methylpropan-2-ol is an example of a

A. dihydric alkanol

B. tertiary alkanol

C. secondary alkanol

D. primary alkanol

The reaction between ammonia and ethyl ethanoate produces

A. propanol and ethanamide

B. propanol and propanamide

C. ethanol and propanamide

D. ethanol and ethanamide

The decarboxylation of ethanoic acid will produce carbon (IV)oxide and

A. methane

B. ethane

C. propane

D. butane