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Monday, 15 June 2026
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Chemistry Past Questions and Answers

Waec Chemistry Questions

Question 1361:
Which of the following salts when dissolved in water will form a solution that will change blue litmus to red?
  • A CH3COONa
  • B NH4Cl
  • C NaCl
  • D KCl
View Answer & Explanation
Question 1362:
Which of the following bonds are broken when ethanol is boiled?
I. Covalent bonds
II. Ionic bonds
III. Hydrogen bonds
  • A I only
  • B II only
  • C III only
  • D I, II, III
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Question 1363:
A compound with molecular formula CH2O2 is
  • A A Carbohydrate
  • B A Carboxylic acid
  • C An alkanol
  • D An ester
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Question 1364:
The quality of electricity required to discharge 1 mole of univalent ion is
  • A 9600C
  • B 48250C
  • C 96500C
  • D 193000C
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Question 1365:
Chlorine water is used as a bleaching agent because it is
  • A An acidic solution
  • B An alkaline solution
  • C An oxidizing agent
  • D A reducing agent
View Answer & Explanation