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Thursday, 02 April 2026
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Chemistry Past Questions and Answers

Jamb Chemistry Questions

Question 36:
Which of the following compounds is the best possible anti-knock agent for petrol?
  • A (CH3)2CH - CH(CH3)CH2CH3
  • B CH3CH2(CH3)CHCH2CH2CH3
  • C CH3CH2(CH3)CHCH2CH2CH3
  • D (CH3)3C - CH2CH2CH3
View Answer & Explanation
Question 37:
The hydrocarbon used in the production of styrene is
  • A Ethyne
  • B Propyne
  • C Ethane
  • D Ethene
View Answer & Explanation
Question 38:
How many structural isomers of chlorobutane are possible?
  • A 4
  • B 3
  • C 2
  • D 1
View Answer & Explanation
Question 39:
The conversion of open chain alkanes into cycloalkanes and aromatic compounds is called
  • A Cracking
  • B Reforming
  • C Isomerization
  • D Polymerization
View Answer & Explanation
Question 40:
Which of the following alkanes has the highest boiling point?
  • A Pentane
  • B Ethane
  • C Propane
  • D Methane
View Answer & Explanation