Jamb Chemistry 1983 Past Questions and Answers

Question 1:

• JAMB 1983

X is a crystalline salt of sodium solution of X in water turns litmus red and produces a gas which turns lime water milky when added to sodium carbonate. With barium chloride solution, X gives hydrochloric acid. X is

A. Na ₂CO ₃
B. NaHCO ₃
C. NaHSO ₄
D. Na ₂SO ₄

Question 2:

• JAMB 1983

X is a crystalline salt of sodium solution of X in water turns litmus red and produces a gas which turns lime water milky when added to sodium carbonate. With barium chloride solution, X gives hydrochloric acid. X is

A. Na ₂CO ₃
B. NaHCO ₃
C. NaHSO ₄
D. Na ₂SO ₄

Question 3:

• JAMB 1983

The alkanol obtained from the production of soap is

A. Ethanol
B. Glycerol
C. Methanol
D. Propanol
E. Glycol

Question 4:

• JAMB 1983

The flame used by welders in cutting metals is

A. Butane gas flame
B. Acetylene flame
C. Kerosene flame
D. Oxy-acetylene flame
E. Oxygen flame

Question 5:

• JAMB 1983

Consecutive members of an alkane homologous serires differ by

A. CH
B. CH₂
C. CH₃
D. C_nH_n
E. C_nH[sub][/sub]