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Saturday, 04 April 2026
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Chemistry Past Questions and Answers

Jamb Chemistry Questions

Question 11:
The relative atomic mass of a naturally occurring lithium consisting of 90%\(\frac{7}{3}\)Li and 10%\(\frac{6}{3}\)Li is
  • A 6.2
  • B 6.8
  • C 7.1
  • D 6.9
View Answer & Explanation
Question 12:
The colour of litmus in an alkaline medium is
  • A Red
  • B Yellow
  • C Pink
  • D Blue
View Answer & Explanation
Question 13:
The compounds CH3CH2CHO and CH3COCH3 can be distinguished from each other using
  • A Dilute ammonia
  • B Benedict's solution
  • C Tollen's reagent
  • D Sodium hydroxide solution
View Answer & Explanation
Question 14:
Which of the following statements is true about 2-methylpropane and butane
  • A They have different number of carbon atoms
  • B They are members of same homologous series
  • C They have the same boiling points
  • D They have the same chemical properties
View Answer & Explanation
Question 15:
The process that requires the use of hardwater in its operation is
  • A Tanning
  • B Bottling
  • C Laundry
  • D Dyeing
View Answer & Explanation