An organic compound which reacts readily with bromine to form a compound with the formula CH₃CHBrCH₂Br is

A. ethene

B. propane

C. butane

D. propene

E. propyne

River contaminated by alkali waste will have a pH of about.

A. 1

B. 3

C. 5

D. 7

E. 9

In solution, aminoethanoic acid (glycine) can be represented as NH⁺₃ CH₂COO. This implies that it

A. is soluble in all inorganic liquids

B. can function as a weak acid or a weak base

C. does not form salt with mineral acids

D. is highly acidic

E. cannot form esters with alkanols

Hydrogen is used for the following except

A. manufacturing of ammonia

B. synthesis of hydrochloric acid

C. extinguishing fire

D. conversion of coal to petrol

E. manufacture of margarine

Which of the following is suitable for determining different isotopes present in an element which exhibits isotopy?

A. Sensitive weighing balance

B. Cathoda ray tube

C. Mass spectrometer

D. Geiger muller counter

E. Eudiometer