## JAMB 1988 : Chemistry

1Which of the following statements is NOT correct

• A. The average kinetic energy of a gas is directly proportional to its temperature
• B. At constant tempearture, the volume of a gas increases as the pressure increases
• C. The pressure of a gas is inversely proportional to its volume
• D. The temperature of a gas is directly proportional to its volume

2The ion that may be assumed to have negligible concentration in a sample of water that lathers readily with soap is

• A. Mg+
• B. K+
• C. CO22-
• D. HCO3

3A substance S is isomorphous with another substance R. When a tiny crystals of S is added into a supersaturated solution of R

• A. S dissolves in the solution
• B. crystals of R are precipitated
• C. there is no observable change
• D. R and S react to generate heat

4Which of the following dilute solutions has the lowest pH value

• A. Calcium trioxocarbonate (IV)
• B. Sodium trioxocarbonate (IV)
• C. Hydrochloric acid
• D. Ethanoic acid

5Which of the following in aqueous solution is neutral to litmus

• A. NH4CI
• B. NaCO3
• C. FeCl3
• D. NaCl

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