1979 JAMB UTME Chemistry Past Questions

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1979

60cm3 of hydrogen are sparked with 20cm3 of oxygen at 100°C and 1 atmosphere. The total volume of the residual gases is?

1979

The reaction of zinc with copper (ll) ions in aqueous solution can be represented as follows: Cu 2+(aq) +Zn (s) → Cu(s) + Zn 2+(aq).Which of the following is the most complete description of this reaction?

1979

Which of the following substances are all made by the process of polymerization?

1979

Which are the correct IUPAC names for H-CO2CH3 and CH = CH

1979

An organic compound X has the following properties:I. It is not miscible with water. ll. It has boiling point of 77oC. lll. It has a sweet odour. IV. lt is insoluble in sodium hydrogen carbonate solution. V lt does not d…

1979

Which of the following statements is true? When the potassium atom forms its ion

1979

Which of the following statements applies during the electroysis of sodium hydroxide sodium hydroxide solution using platinum electrodes?

1979

Methanoic acid mixes with water in all proportions and has about the same boiling point as water which of the following methods would you adopt to obtain pure water from a mixture of stand, water and methanoic acid?

1979

When carbondioxide is bubbled into limewater a white precipitate is formed. If the passage of the gas is continued, the precipitate disappears. The reason for this is

1979

The oxidation state of manganese in potassium permanganate is

1979

When ammonium, potassium and calcium carbonates are each separately heated

1979

How many grams of HBr would exactly be required to react with 2 g of propyne? (C =12, H=1, Br = 80)

1979

Helium atoms are chemically unreactive because

1979

Which of the following contains two amphoteric oxides?

1979

When a piece of charcoal enclosed in a cylinder containing air is ignited

1979

The empirical formula of an oxide of nitrogen containing 30.4 per cent of nitrogen is (N=14.0,O=16.0)

1979

In the electrolysis of dilute sulphuric acid using platinum electrodes, the products obtained at the anode and cathode are:Anode Cathode

1979

12 g of solid protassium chlorate (KCIO) were added to 40 g of water and heated to dissolve all the solid. As the solution cools, crystals of potassium chlorate at 66 oC. The solubility of potassium chlorate at 66 oC is…

1979

1979 JAMB UTME Chemistry Past Questions

60cm3 of hydrogen are sparked with 20cm3 of oxygen at 100°C and 1 atmosphere. The total volume of the residual gases is?

The reaction of zinc with copper (ll) ions in aqueous solution can be represented as follows: Cu 2+(aq) +Zn (s) → Cu(s) + Zn 2+(aq).Which of the following is the most complete description of this reaction?

Which of the following substances are all made by the process of polymerization?

Which are the correct IUPAC names for H-CO2CH3 and CH = CH

An organic compound X has the following properties:I. It is not miscible with water. ll. It has boiling point of 77oC. lll. It has a sweet odour. IV. lt is insoluble in sodium hydrogen carbonate solution. V lt does not d…

Which of the following statements is true? When the potassium atom forms its ion

Which of the following statements applies during the electroysis of sodium hydroxide sodium hydroxide solution using platinum electrodes?

Methanoic acid mixes with water in all proportions and has about the same boiling point as water which of the following methods would you adopt to obtain pure water from a mixture of stand, water and methanoic acid?

When carbondioxide is bubbled into limewater a white precipitate is formed. If the passage of the gas is continued, the precipitate disappears. The reason for this is

The oxidation state of manganese in potassium permanganate is

When ammonium, potassium and calcium carbonates are each separately heated

How many grams of HBr would exactly be required to react with 2 g of propyne? (C =12, H=1, Br = 80)

Helium atoms are chemically unreactive because

Which of the following contains two amphoteric oxides?

When a piece of charcoal enclosed in a cylinder containing air is ignited

The empirical formula of an oxide of nitrogen containing 30.4 per cent of nitrogen is (N=14.0,O=16.0)

In the electrolysis of dilute sulphuric acid using platinum electrodes, the products obtained at the anode and cathode are:Anode Cathode

12 g of solid protassium chlorate (KCIO) were added to 40 g of water and heated to dissolve all the solid. As the solution cools, crystals of potassium chlorate at 66 oC. The solubility of potassium chlorate at 66 oC is…

If chlorine gas is bubbled into water and then this yellowish-green coloured solution is exposed to bright sunlight for a while

In the redox reaction 2Fe2+ + CI2 → 2Fe 3 + + 2Cl