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Chemistry Past Questions and Answers

Jamb Chemistry Questions

Question 1:
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
View Answer & Explanation
Question 2:
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
View Answer & Explanation
Question 3:
The alkanol obtained from the production of soap is
  • A Ethanol
  • B Glycerol
  • C Methanol
  • D Propanol
  • E Glycol
View Answer & Explanation
Question 4:
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
View Answer & Explanation
Question 5:
Consecutive members of an alkane homologous serires differ by
  • A CH
  • B CH2
  • C CH3
  • D CnHn
  • E CnH[sub][/sub]
View Answer & Explanation