OAU Chemistry 2010/2011 Past Questions

Stainless steel is an alloy of

A gas that can behave as a reducing agent towards chlorine and as an oxidizing agent towards

An element that can exist in two or more different structure forms which posses the same chemical properties is said to exhibit

Which of the following is NOT the correct product formed when the parent metal is heated in air?

Which of the following roles does sodium chloride play in soap preparation? It

The flame used by welders in cutting metals is

The function of sulphur during the vulcanization of rubber is to

Which of the following compounds is NOT formed by the action of chlorine on methane?

Starch can be converted to ethyl alcohol by

How many isomers can be formed from organic compounds with formula C₅H₈O

When platinum electrodes are used during the electrolysis of cooper (II) tetraoxoxulphate (V) Solution, the solution gets progressively

An element with atomic number twelve is likely to be

What volume of 0.50 M H₂SO₄ will exactly neutralize 20cm₃ of 0.1M NaOH solution?

Which of these has the lowest pH value?

Consecutive members of an alkane homogenous series differ by

Which of these will dilute in HCl? Mg, Fe, Pb and Cu

Which of the following is used in fire extinguishers?

Metals is NOT used for under water construction because

The hybridization of the carbon atom in ethyne is

In the Haber process for the manufacturer of ammonia, finely divided iron is used as

Nitrogen can best be obtained from a mixture of oxygen and nitrogen by passing the mixture over

At STP, how many litres of hydrogen can be obtained from the reaction of 500cm³ of 0.5M H₂SO₄ excess zinc metal

Tetraoxosulphate(VI) ions are final test using

Which of the following is an acid salt?

Which of the following physical properties decreases across the period table