2001 JAMB UTME Chemistry Past Questions

2001

What is the decrease in volume of air when pyrogallol is shaken with 30.00cm3 of air ?

2001

Ethanoic acid is

2001

What current in amperes will deposit 2.7g of aluminium in 2 hours?[Al = 27, F = 96 500 C mol-1]

2001

Which of the following best explains the increase in the rate of a chemical reaction as the temperature rises?

2001

A metal M displaces zinc from zinc chloride solution. This shows that

2001

P(g) + Q(g) ↔ 3R(s) + S(g) ΔH is negative Which of the following will increase the yield of R?

2001

As the concentration of an electrolyte reduces, the conductivity

2001

When ΔH is negative, a reaction is said to be

2001

3Cu(s) + 8HNO3(aq) 3Cu(NO3)2(aq) + 4H2O(l) + 2NO(g)In the equation above, copper is

2001

2SO2(g) + O2(g) ↔ 2SO3(g)ΔH = -189 kJ mol-1The equilibrium constant for the reaction above is increased by

2001

C(s) + 2S(g) → CS2(g)ΔH = +89 kJ mol-1The chemical equation above implies that

2001

The main impurity in iron ore during the extraction of iron is

2001

The general formula for the alkanals is

2001

Fermentation is the

2001

NH3(g) + HCl(g) → NH4Cl(s)The entropy change in the system above is

2001

In which of the following reactions has the oxidation number of nitrogen increased?

2001

Proteins in acid solution undergo

2001

When chlorine Is passed into water and the resulting solution exposed to sunlight, the product formed are

2001

A trihydric alkanol is

2001

Catalytic hydrogenation of benzene produces

1 2 3