1997 WAEC SSCE Chemistry Past Questions

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1997

The mass number of an element is the sum of its

1997

The phenomenon observed when dust particles collide randomly in a beam of sunlight is known as

1997

A given volume of methane diffuses in 20 seconds. How long will it take the same volume of sulphur (IV) oxide to diffuse under the same conditions? [CH4 = 16; SO2 = 64]

1997

An increase in the pressure of a gas results in a decrease in its

1997

If the atomic number of an element X is 11 and that of nitrogen is 7, the most likely formula of the nitride of X is

1997

A sodium atom and a sodium ion have the same

1997

In linear molecules, the bond angle is

1997

Which of the following ions will migrate to the cathode during electrolysis?

1997

The loss of molecules of water of crystallization to the atmosphere by some crystalline salts is known as

1997

Which of the following is a general method of preparing acids?

1997

An acid is a substance which in the presence of water produces

1997

If the value of ∆H for a reaction is negative, it means that the reaction is

1997

What is the value of x in the following equation? MnO- 4 + 4H+ + xe- → MnO 2 + 2H2O

1997

From the following equations, what is the order of decreasing reactivity of X, Y and Z? Y (s) + X2+(aq) → Y2+(aq) + X(s) X(s) + Z2+(aq) → X2+(aq) + Z(s)

1997

The common feature of reactions at the anode is that

1997

What quantity of electrons (in mole) is lost when one mole of iron (ll) ions is oxidized to iron (lll) ions?

1997

The reaction between alkanoic acids and alkanols in the presence of a mineral acid is known as

1997

Ethene undergoes mainly addition reactions because it is

1997

1997 WAEC SSCE Chemistry Past Questions

The mass number of an element is the sum of its

The phenomenon observed when dust particles collide randomly in a beam of sunlight is known as

A given volume of methane diffuses in 20 seconds. How long will it take the same volume of sulphur (IV) oxide to diffuse under the same conditions? [CH4 = 16; SO2 = 64]

An increase in the pressure of a gas results in a decrease in its

If the atomic number of an element X is 11 and that of nitrogen is 7, the most likely formula of the nitride of X is

A sodium atom and a sodium ion have the same

In linear molecules, the bond angle is

Which of the following ions will migrate to the cathode during electrolysis?

The loss of molecules of water of crystallization to the atmosphere by some crystalline salts is known as

Which of the following is a general method of preparing acids?

An acid is a substance which in the presence of water produces

If the value of ∆H for a reaction is negative, it means that the reaction is

What is the value of x in the following equation? MnO- 4 + 4H+ + xe- → MnO 2 + 2H2O

From the following equations, what is the order of decreasing reactivity of X, Y and Z? Y (s) + X2+(aq) → Y2+(aq) + X(s) X(s) + Z2+(aq) → X2+(aq) + Z(s)

The common feature of reactions at the anode is that

What quantity of electrons (in mole) is lost when one mole of iron (ll) ions is oxidized to iron (lll) ions?

The reaction between alkanoic acids and alkanols in the presence of a mineral acid is known as

Ethene undergoes mainly addition reactions because it is

Separation of mixture of solids by physical methods can be based on differences in the following except

The position of equilibrium in a reversible reaction is affected by