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Chemistry JAMB Past Questions

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1381
Which of the following represents the balanced equation for the reaction of copper with concentrated trioxonitrate (V) acid?
  • A. Cu (s) + 2HNO 3(aq) → Cu (NO 3) 2(aq) + H 2(g)
  • B. Cu (s) + 4HNO 3(aq) → Cu (NO 3) 2(aq) + 2H 2O (1) + 2NO 2(g)
  • C. 3Cu (s) + 8HNO3(aq) → 3Cu (NO3)2(aq) + 4H2O(1) + 2NO(g)
  • D. 3Cu(s) + 4HNO3(aq) → 3Cu(NO 3) 2(aq) + 2H 2O (1) + 2NO (g)
View Answer & Discuss (9) JAMB 1989
1382
The catalyst used in the contact process for the manufacture of tetraoxosulphate (VI) acid is
  • A. manganes (IV) oxide
  • B. manganese (ll) tetraoxosulphate (VI)
  • C. vanadium (V) oxide
  • D. iron metal
View Answer & Discuss (1) JAMB 1989
1383

Some products of destructive distillation of coal are?

  • A. carbon (IV) oxide and ethanoic acid
  • B. trioxocarbonate (IV) acid and methanoic acid
  • C. producer gas and water gas
  • D. coke and ammoniacal liquor
View Answer & Discuss (7) JAMB 1989
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1384
Gunpower is made from charcoal, sulphur and potassium trioxonitrate (V) The salt in the mixture performs the function of
  • A. an oxidant
  • B. a reductant
  • C. a solvent
  • D. a catalyst
View Answer & Discuss (5) JAMB 1989
1385

Which of the following reactions is (are) feasible?
I Br (l) + 2CI\(_2\)(aq) → 2Br(aq) + CI\(_2\)(g)
ll 2 I (aq) + Br\(_2\)(L) → 2Br (aq) + I\(_2\)(s)
lll 2F (aq) + CI\(_2\)(g) → 2CI (aq) + F\(_2\)(g)

IV 2F(aq) + Br\(_2\)(l) → 2Br (aq) + F\(_2\)(g)

  • A. l
  • B. ll
  • C. l and lll
  • D. lll and lV
View Answer & Discuss (12) JAMB 1989
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