1982 JAMB UTME Chemistry Past Questions

1982

Water is poured over a white solid and a colourless neutral gas is evolved which burns with a sooty flame. The white solid is?

1982

An amphoteric oxide is an?

1982

Which of the following statements is correct during the electrolysis of a caustic soda solution using platinum electrodes?

1982

An acid is said to be weak if?

1982

Which of the following statements is incorrect?

1982

Sodium carbonate crystals on exposure to a dry atmosphere change to a white powder. This phenomenon is known as?

1982

The product formed at the the cathode during the electrolysis of sodium chloride solution with carbon electrodes is?

1982

Which of the following types of reactions takes place between C2H4 and the halogens?

1982

Cotton is almost pure?

1982

1.00 g of the oxide of metal X (atomic mass = 64) gave 0.80 g of the metal when reduced with hydrogen. The formula of the oxide is?

1982

In the chemical reaction A + B \(\to\) C + D, more of D is formed?

1982

In the reaction N2(g) + O(g) ↔ 2NO(g) produced an increase in the total pressure will?

1982

Which of the following CANNOT be obtained by fractional distillation of petroleum?

1982

In the reaction NH3 + H+ → NH4+, the bond formed results from?

1982

If the rate of diffusion of oxygen gas is taken as 1, what will be rated of diffusion of methane whose relative molar mass is 16?

1982

Which of the following equations represents an oxidizing action of sulphur dioxide?

1982

Which of the following represents ethyl ethanonate?

1982

The production of ammonia by the haber process may be represented by the equilibrium equation N2(g) + 3H2(g) ↔ 2NH3 ∆H = -22KJ. Therefore the production of ammonia will be favoured by?

1982

When a solution of silver (l) nitrate is saturated with hydrogen sulphide, a black precipitate forms which is?

1982

When air is passed through alkaline pyrogallol and then over quicklime, the only gases left are?

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