Question 556:

• JAMB 1988

What process would coal undergo to give coal gas, coal tar, ammoniacal liquor and coke?

A. Steam distillation
B. Destructive distillation
C. Liquefaction
D. Hydrolysis

Question 557:

• JAMB 1988

The formula of a compound formed in a reaction between a trivalent metal M and a tetravalent non-metal X is~?

A. MX
B. M₃X₄
C. M₄X₃
D. M₃X₂

Question 558:

• JAMB 1988

2.25g of a sample of an oxide of copper on reduction gave 2.0g of copper. 2.50g of another oxide of copper on reduction also gave 2.0g of copper. These results are in accordance with the law of?

A. Constant composition
B. Conservation of matter
C. Multiple proportions
D. Definite proportions

Question 559:

• JAMB 1988

One mole of propane is mixed with five moles of oxygen. The mixture is ignited and the propane burns completely. What is the volume of the products at s.t.p?
(G.M.V = 22.4 dm³ mol^-1)

A. 112.0 dm³
B. 67.2 dm³
C. 56.0 dm³
D. 44.8 dm³

Question 560:

• JAMB 1988

An increase in temperature causes an increase in the pressure of a gas because there is an increase in the?

A. Average velocity of the molecules
B. Number of collisions between the molecules
C. Density of the molecules
D. Free mean path between each molecules and other