Jamb Chemistry Past Questions and Answers

Question 1446:

• JAMB 2007

A supersaturated solution is said to contain

A. More solute than it can dissolve at that temperature in the presence of undissolved solute
B. As much solute as it can dissolve at that temperature in the presence of undissolved solute
C. As much solute as it can dissolve at that temperature
D. More solute than it can dissolve at that temperature

Question 1447:

• JAMB 2007

The presence of nitrogen in air is to slow down

A. Respiration and combustion
B. Combustion and corrosion
C. Corrosion and respiration
D. Respiration and transpiration

Question 1448:

• JAMB 2007

A good drying agent should be

A. Deliquescent
B. Effervescent
C. Hygroscopic
D. Efflorescent

Question 1449:

• JAMB 2007

Smog usually occurs over cities which

A. Burn a lot of fossil fuels
B. Have very few plants
C. Are surrounded by water
D. Are overpopulated

Question 1450:

• JAMB 2008

Chlorophyll obtained from given leaves of plant can be shown to be composed of more than one coloured component by the technique of

A. Crystallization
B. Hydrolysis
C. Chromatography
D. Sublimation