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Thursday, 06 August 2026
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Chemistry Past Questions and Answers

Post Utme Chemistry Questions

Question 256:
The \(pH\) of a solution containing \(0.5 \times 10^{-6} M H _{2} SO _{4}\) is ____________
  • A \(6.3\)
  • B \(6.5\)
  • C \(6.0\)
  • D \(5.0\)
View Answer & Explanation
Question 257:
Which of the following oxides will NOT dissolve in both dilute hydrochloric acid and \(2 M\) sodium hydroxide solution?
  • A Lead (II) oxide
  • B Aluminum oxide
  • C Zinc (II) oxide
  • D Calcium oxide
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Question 258:
The I.U.P . A . C . name for the compound [image] is ____________
  • A Pent \(-3\) - enoic acid
  • B Pent \(-4\) - enoic acid
  • C Pent 2 - enoic acid
  • D Pent \(-3\) - ene \(-1-\) oic acid
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Question 259:
Metal salt of long chain fatty acids are known as ____________
  • A Detergent
  • B Double salts
  • C Soaps
  • D Grease
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Question 260:
The compound<br/>[image]<br/>when refluxed with dilute \(HCl\), is hydrolysed to give ____________
  • A \(CH _{3} COOH\) and \(CH _{3} CH _{2} CH _{2} OH\)
  • B \(CH _{3} COOH\) and \(CH -\) \({ }_{3} CH _{2} CH _{3} \)
  • C \(CH _{3} COOH\) and \(CH _{3} CH _{2} OH\)
  • D \(CH _{3} COOH\)
View Answer & Explanation