1997 - JAMB Chemistry Past Questions and Answers - page 4

The removal of rust from iron by treatment with tetraoxosulphate (IV) acid is based on the?

Which of the additives could improve the quality of steel?

Sodium hydroxide is prepared commercially from sodium chloride solution by?

A sample of a substance containing only C and H burns in excess O₂ to yield 4.4g of CO₂

and 2.7 g of H₂O. The empirical formula of a substance is?

(C = 12, O = 16, H = 1)

                    4.4          2.7<br />

             Carbon Hydrogen <br />

An undesirable paraffin in the petroleum industry which is particularly prone to knocking is?

The reaction of an alkanol with an alkanoic acid in the presence of concentrated H₂SO₄ will produce an?

The final product of the reaction of ethyne with hydrogen iodine is?

Synthetic rubber obtained by the polymerization of chlorobutadiene in the presence of sodium is called?

The synthetic detergents are preferred to soap for laundry using hard water because?

25 cm³ of 0.02 M KOH neutralized 0.03 g of a monobasic organic acid having the general formula C_nH_{2n + 1} COOH. The molecular formula of the acid is?

(C = 12, H = 1, O = 16)