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Chemistry Past Questions and Answers

Neco Chemistry Questions

Question 161:
Which of the following compounds will undergo thermal dissociation?
  • A AgCl
  • B CaCO3
  • C K2S04
  • D NaOH
  • E NH4CI
View Answer & Explanation
Question 162:
Which of the following gases will bleach moist litmus paper?
  • A Cl2
  • B CO2
  • C HCl
  • D N2O
  • E SO3
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Question 163:
What kind of bond exist between carbon and oxygen in C03 2-?
  • A Co- ordinate Covalent
  • B Covalent
  • C Electrovalent
  • D Metallic
  • E Van der Waal forces
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Question 164:
Which of these compounds has the greatest ionic character?
  • A AlF3
  • B BF2
  • C CF4
  • D CsF
  • E NaF
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Question 165:
\( ^{235}_{92}U + ^1_0n → ^{145}_{56}Ba + ^{88}_{36}Kr + 3^1_0n + Energy \)

The equation above represent a/an ____________
  • A Alpha particle emission
  • B Endothermic reaction
  • C Nuclear fission
  • D Nuclear fusion
  • E Thermal dissociation
View Answer & Explanation