Jamb 2002 Chemistry Past Questions And Answers
1
Which of these pairs are synthetic and natural macromolecules respectively?
- A. Haemoglobin and nylon, creatine and polyethylene
- B. Nylon and polyethlene, creatine and Haemoglobin
- C. Nylon and creatine, polyethylene and haemoglobin
- D. Creatine and Polyethylene, nylon and haemoglobin
2
The boiling of fat and aqueous caustic soda is referred to as
- A. hydrolysis
- B. esterification
- C. acidification
- D. saponification
3
Which of the following statement is true of a proton?
- A. The mass of a proton is 1840 times the mass of electron
- B. the total mass of the protons in a particular nucleus is always half the nuclear size
- C. The mass of a proton is one - twelfth the molar mass of carbon
- D. The mass of a proton is 1.0008g
4
What amount of mercury would be liberated if the same quantity of electricity that liberates 0.65g of zinc is applied?
- A. 2.01g
- B. 1.00g
- C. 4.02g
- D. 8.04g
5
The most important use of hydrogen is in the
- A. manufacture of ammonia
- B. manufacture of methyl alcohol
- C. manufacture of ethyl alcohol
- D. hydrogenation of oils
6
The formula CH2 for ethanoic acid is regarded as its
- A. Molecular formula
- B. General formula
- C. Empirical formula
- D. Structural formula
7
Hydrogen is readily released when dilute hydrochloric acid reacts with
- A. Cu
- B. Na
- C. Au
- D. Ag
8
Ethanol can easily be produced by
- A. fermentation of starch
- B. distillation of starch solution
- C. catalytic oxidation of methane
- D. destructive distillation of wood
9
The product of the electrolysis of dilute sodium hydroxide using platinum electrodes are
- A. Hydrogen and oxygen gases
- B. Water and hydrogen gas
- C. Water and sodium metal
- D. Sodium metal and oxygen gas
10
which of the following polymers is suitable for packaging and electrical insulation?
- A. polyamide
- B. polyethene
- C. polycarbonate
- D. polystyrene