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Chemistry JAMB Past Questions

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1186
When ethene gas reacts with chlorine gas to form 1, 2-dichloroethene, the reaction is called?
  • A. substitution
  • B. addition
  • C. polymerization
  • D. hydrolysis
  • E. reduction
View Answer & Discuss (9) JAMB 1980
1187

20 cm3 of 1 M H\(_2\)SO\(_4\) is mixed 20 cm\(^3\) of 1 M NaOH. The resulting solution is?

  • A. acidic with a molarity of 0.50 M H2SO4
  • B. acidic with a molarity of 0.25 H2SO4
  • C. neutral
  • D. alkaline with a molarity of 0.25 M NaOH
  • E. alkaline with a molarity of 0.50 M NaOH
View Answer & Discuss (31) JAMB 1980
1188

Which of the following is acceptable as the organic product of the reaction of ethanoic acid and ethanol with an acid catalyst?

  • A. Ethyl ethanoate
  • B. Methyl ethanoate
  • C. Ethyl methyl ketone
  • D. Butanol
  • E. None
View Answer & Discuss (4) JAMB 1980
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1189
Given the mean atomic mass of chlorine prepared in the laboratory to be 35.5 and assuming that chlorine contains two isotopes of mass number 35 nad 37, what is the percentage composition of the isotope of mass number 35?
  • A. 20
  • B. 25
  • C. 50
  • D. 75
  • E. 90
View Answer & Discuss (14) JAMB 1980
1190

When dilute hydrochloric acid is added to iron(ll)sulphide, the gas evolved will?

  • A. turn moist red litmus paper blue
  • B. turn lime water milky
  • C. blacken lead acetate paper
  • D. rekindle a glowing splint
  • E. burn a sqeakly pop
View Answer & Discuss (6) JAMB 1980
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