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Chemistry Past Questions

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3291

Sieving is a technique used to separate mixtures containing solid particles of

  • A. small sizes
  • B. large sizes
  • C. different sizes
  • D. the same size
View Answer & Discuss JAMB 2018
3292

3H\(_{2(g)}\)+ N\(_{2(g)}\)⇔ 2NH\(_{3(g)}\) ; H= -ve
In the reaction above, lowering of temperature will

  • A. have no effect on the equilibrium position
  • B. increase the rate of both the forward and reverse reactions equally
  • C. favour the forward reaction
  • D. favour the reverse reaction
View Answer & Discuss JAMB 2018
3293

The situation obtained when a perfect gas expands into a vacuum is

  • A. ΔH is positive and TΔ S is zero
  • B. ΔH is positive and T Δ S is negative
  • C. ΔH is negative and TΔ S is zero
  • D. ΔH is zero and T Δ S is positive
View Answer & Discuss (1) JAMB 2018
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3294

The general formula of alkanones is

  • A. RCHO
  • B. R\(_2\)CO
  • C. RCOOH
  • D. RCOOR
View Answer & Discuss (3) JAMB 2018
3295

The alkanoic acid found in human sweat is

  • A. CH\(_3\)-COOH
  • B. CH\(_3\)—CH\(_2\)—COOH
  • C. H-COOH
  • D. CH\(_3\)
View Answer & Discuss (2) JAMB 2018
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