1986 JAMB UTME Chemistry Past Questions

1986

Which of the following salts when dissolved in water will NOT give the corresponding pH value?

1986

20 cm3 of 1.0 molar NH4OH solution when neutralized with 20.05cm3 of 0.1 molar HCl liberated -102 joules of heat. Calculate the heat of neutralization of NH4OH?

1986

Which of these represents a redox reaction?

1986

How many coulombs of electricity are passed through a solution in which 6.5 amperes are allowed to run for 1.0 hour?

1986

Which of the following solutions will conduct the least amount of electricity?

1986

Which of the following is an acidic salt?

1986

The exhaust fumes from a garage in a place that uses petrol of high sulphur content are bound to contain?

1986

When steam is passed through red hot carbon, which of the following are produced?

1986

The reaction Mg + H2O → MgO + H2 takes place only in the presence of?

1986

The approximate volume of air containing 10cm3 of oxygen is?

1986

What is the consequences of increasing pressure on the equilibrium reaction ZnO(s) + H2(g) Zn(s) + H2O(I)?

1986

Which of the following sulphides is insoluble in dilute HCl?

1986

Which of the following metals does NOT form a stable trioxocarbonate (IV)?

1986

In the course of an experiment, two gases X and Y were produced. X turned wet lead ethanoate to black and Y bleached moist litmus paper. What are the element(s) in each of the gases X and Y respectively?

1986

Which of the following will react further with oxygen to form higher oxide?

1986

Oxygen-demanding waste are considered to be a water pollutant because they?

1986

The iron (III) oxide impurity in bauxite can be removed by?

1986

What are the values of x, y and z respectively in the equation: xCu + yHNO3 → xCu(NO3)2 + 4H2O + zNO?

1986

Ammonia gas is normally dried with?

1986

A substance Z reacts with NaOH to give salt and water only. When Z is treated with dilute HCl, a gas is evolved which gives a yellow suspension on passing into concentrated H2SO4. Substance Z is?

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