1992 JAMB UTME Chemistry Past Questions

1992

A sample of orange juice is found to have a pH of 3.80. What is he concentration of the hydroxide ion in the juice?

1992

In what way is equilibrium constant for the forward reaction related to that of the reversed reaction?

1992

In which of the following is the entropy change positive?

1992

MnO2 + 2CI- + 4H+ → MnO2+ + CI2 + 2H2O. The changes is oxidation numbers when the manganese, chloride and hydrogen ions react according to the above equation are respectively?

1992

S2O2-3 + I2 → S2O62- + 2I-. In reaction above, the oxidizing agent is?

1992

Calculate the mass, in kilograms, of magnesium produced by the electrolysis of magnesium (II) chloride in a cell operating for 24 hours at 500 amperes.

1992

Which of the following oxides of nitrogen is unstable in air?

1992

Which of the following combination of gases is used for metal welding? i. Oxygen and ethyne, ii. Hydrogen and ethyne, iii. Hydrogen and oxygen, iv. Ethyne, hydrogen and oxygen.

1992

Which of these statements is TRUE about carbon (IV) oxide?

1992

For a general equation of the nature xP + yQ ≈ mR + nS, the expression for the equilibrium constant is?

1992

Which of the following equilibria shows little or no net reaction when the volume of the system is decreased?

1992

Sodium hydroxide solution can be conveniently stored in a container made of?

1992

Addition of an aqueous solution of a salt gives a white precipitate. The salt is likely to be a?

1992

Safety matches contain sulphur and?

1992

The gas formed when ammonium trioxonitrate (V) is heated with sodium hydroxide is?

1992

Which of the following compounds reacts with sodium metal as well as silver and copper salts ?

1992

The carbon atoms in ethene are?

1992

CaOs + H2O(l) → Ca(OH)2(s) ΔH -65 kj. The process represented by the above equation is known as?

1992

Duralumin consists of aluminium, copper, ?

1992

Which of the following is NOT used as a raw material in the Solvay process?

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