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Chemistry 1978 JAMB Past Questions

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1

Zinc Oxide is a?

  • A. Basic Oxide
  • B. Acidic Oxide
  • C. Amphoteric Oxide
  • D. Neutral Oxide
  • E. Reactive Oxide
View Answer & Discuss (285) JAMB 1978
2

When sodium chloride and metallic sodium are each dissolved in water

  • A. both processes are exothermic
  • B. both processes are endothermic
  • C. the dissolution of metallic sodium is endothermic
  • D. the dissolution of metallic sodium is exothermic
  • E. the dissolution of sodium chloride is explosive
View Answer & Discuss (139) JAMB 1978
3

The periodic classification of elements is an arrangement of the elements in order of their

  • A. Atomic Weights
  • B. Isotopic Weights
  • C. Molecular Weights
  • D. Atomic Numbers
  • E. Atomic Masses
View Answer & Discuss (118) JAMB 1978
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4

In the reaction between sodium hydroxide and sulphuric acid solutions, what volume of 0.5M sodium hydroxide would exactly neutralise 10cm\(^3\) of 1.25M sulphuric acid?

  • A. 5cm3
  • B. 10cm3
  • C. 20cm3
  • D. 25cm3
  • E. 50cm3
View Answer & Discuss (188) JAMB 1978
5

A small quantity of solid ammonium chloride (NH4Cl) was heated gently in a test tube, the solid gradually disappears to produce two gases. Later, a white cloudy deposit was observed on the cooler part of the test tube. The ammonium chloride is said to have undergone?

  • A. distillation
  • B. sublimation
  • C. precipitation
  • D. evaporation
  • E. decomposition
View Answer & Discuss (155) JAMB 1978
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