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Chemistry 1994 JAMB Past Questions

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26
Which of the following is TRUE of Le Chatelier's Principle for an exothermic reaction?
  • A. Increase in temperature will cause an increase in the equilibrium constant
  • B. Increase in temperature will cause a decrease in the equilibrium constant
  • C. Addition of a catalyst will cause an increase in the equilibrium constant
  • D. Addition of a catalyst will cause a decrease in the equilibrium constant
View Answer & Discuss (5) JAMB 1994
27
Which of the following are produced when ammonium trioxonitrate (V) crystals are cautiously heated in a hard glass round bottomed flask?
  • A. N2O and steam
  • B. NO2 and ammonia
  • C. N2O2 and NO2
  • D. NO and NO2
View Answer & Discuss (8) JAMB 1994
28
Which of these metals CANNOT replace hydrogen from alkaline solutions?
  • A. Alulinium
  • B. Zinc
  • C. Tin
  • D. Iron
View Answer & Discuss (5) JAMB 1994
NECO offline past questions - All questions, answers & explanations in one app 25712
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29
Clothes should be properly rinsed with water after bleaching because?
  • A. the bleach decolourizes the cothes
  • B. chlorine reacts with fabrics during bleaching
  • C. the clothes are sterilized during bleaching
  • D. hydrogen chloride solution is produced during bleaching
View Answer & Discuss (1) JAMB 1994
30

Which of these solutions will give a white precipitate with a solution of barium chloride acidified with hydrochloric acid?

  • A. Sodium trioxocarbonate (IV)
  • B. Sodium tetraoxosulphate (IV)
  • C. Sodium trioxosulphate (IV)
  • D. Sodium sulphide
View Answer & Discuss (5) JAMB 1994
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