Jamb Chemistry Past Questions and Answers

Question 1511:

• JAMB 2009

When sodium trioxocarbonate (IV) decahydrate loses its water of crystallization to the atmosphere, the process is

A. Deliquescence
B. Efflorescence
C. Hygroscopic
D. Effervesecence

Question 1512:

• JAMB 2009

Water can be obtained as the only product during the

A. Combustion of hydrocarbons
B. Neutraliization of an acid by base
C. Combustion of hydrogen
D. Electrolysis of brine

Question 1513:

• JAMB 2009

If 10.5g of lead (II) trioxonitrate (V) is dissolved in 20cm³ of distilled water at 18^oC, the solubility of the solute in mol dm^-3 is
[Pb = 207, N = 14, O = 16]

A. 1.60
B. 5.25
C. 16.00
D. 525.00

Question 1514:

• JAMB 2009

For a given solute, the concentration of its saturated solution in different solvents are

A. The same at the same temperature
B. Different at the same temperature
C. The same at different temperature
D. Constant

Question 1515:

• JAMB 2009

The major source of oxides of nitrogen is from the burning of

A. Coal
B. Wood
C. Fuel
D. Chlrofluorocarbons