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Chemistry Past Questions and Answers

Chemistry Questions

Question 716:
JAMB 1991
A certain liquid has a high boiling point. It is viscous, non-toxic, miscible with water being very hygroscopic. This liquid is most likely to be?
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  • A CH<sub style='font-size: smaller;'>3</sub>CH<sub style='font-size: smaller;'>2</sub>CH<sub style='font-size: smaller;'>2</sub>HO
  • B CH<sub style='font-size: smaller;'>3</sub>CHOHCH<sub style='font-size: smaller;'>3</sub>
  • C CH<sub style='font-size: smaller;'>3</sub>CH<sub style='font-size: smaller;'>2</sub>CHOHCH<sub style='font-size: smaller;'>3</sub>
  • D CH<sub style='font-size: smaller;'>2</sub>OHCHOHCH<sub style='font-size: smaller;'>2</sub>OH
View Answer & Explanation
Question 717:
JAMB 1991
CH<sub style='font-size: smaller;'>3</sub>-CH-CH<sub style='font-size: smaller;'>3</sub><br/>CH<sub style='font-size: smaller;'>2</sub>CI <br/>Is known as?
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  • A 1-chloro-2-methylbutane
  • B 1-chloro-2-methylpropane
  • C 2-chloromethylpropane
  • D 1-chloro-2, 2-dimethylethane
View Answer & Explanation
Question 718:
JAMB 1991
Which of the following statements is TRUE of the complete hydrolysis of a glycerine by sodium hygroxide?
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  • A 3 moles ofNaOH are required for each mole of glyceride
  • B 3 moles of glycerol are produced
  • C Only one mole of soap is formed
  • D Concentrated H<sub style='font-size: smaller;'>2</sub>SO<sub style='font-size: smaller;'>4</sub> is essential for the completion of the reaction
View Answer & Explanation
Question 719:
JAMB 1991
Which of the following are the products of the reaction between CH<sub style='font-size: smaller;'>3</sub>COOH and CI<sub style='font-size: smaller;'>2</sub> in sunlight?
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  • A CICH<sub style='font-size: smaller;'>2</sub>COOH + HCI
  • B CH<sub style='font-size: smaller;'>3</sub>COCI + HOCI
  • C CH<sub style='font-size: smaller;'>3</sub>COOCI + HCI
  • D CH<sub style='font-size: smaller;'>3</sub>COCI + HO<sub style='font-size: smaller;'>2</sub>
View Answer & Explanation
Question 720:
JAMB 1991
Which of these is an acid salt?
SchoolNGR Classroom
  • A K<sub style='font-size: smaller;'>2</sub>SO<sub style='font-size: smaller;'>4-</sub>.AI<sub style='font-size: smaller;'>2</sub>(SO<sub style='font-size: smaller;'>4</sub>)<sub style='font-size: smaller;'>3</sub>.24H<sub style='font-size: smaller;'>2</sub>O
  • B CuCO<sub style='font-size: smaller;'>3</sub>.Cu(OH)<sub style='font-size: smaller;'>2</sub>
  • C NaHS
  • D CaOCI<sub style='font-size: smaller;'>2-</sub>
View Answer & Explanation

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