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UTME Chemistry 1984 JAMB Past Questions and Answers, Jamb, Pre-degree, Nursing, Waec, Neco

UTME Chemistry 1984 JAMB Past Questions and Answers

1. The function of conc. H2SO4 in the esterification of ethanoic acid with ethanol is to

Options

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A) serve as a dehydrating agent

B) serve as a solvent

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C) act as a catalyst

D) prevent any side reaction

E) serve as an oxidizing agent

The correct answer is C.

2. A piece of sea shell, when dropped into a dilute solution of hydrochloric acid, produces a colourless, odourless gas which turns clear limewater milky. The sea shell contains

Options

A) sodium chloride

B) ammonium nitrate

C) calcium carbonate

D) calcium chloride

E) magnesium chloride

The correct answer is C.

3. Which of the following electrodes is used in electrolysis of bauxite (Al2O3) in molten cryolite?

Options

A) Steel electrodes

B) Carbon electrodes

C) Mercury electrodes

D) Carbon anode and steel cathode

E) Carbon cathode and stell anode

The correct answer is B.

4. An aqueous solution of a metal salt, M, gives a white precipitate with NaOH which dissolves in excess NaOH. With aqueous ammonia, the solution of M also gives a white precipitate which dissolves in excess ammonia. Therefore cartion in M is

Options

A) Zn ++

B) Ca++

C) Ai+++

D) Pb++

E) Cu++

The correct answer is A.

5. At S. T. P how many litres of hydrogen can be obtained from the reaction of 500 cm3 of 0.5 M H 2SO 4 with excess zinc metal? (Gram molecular volume of H2 = 22. 4 dm 3)

Options

A) 22.4 dm 3

B) 11 . 2 dm 3

C) 6. 5 dm 3

D) 5. 6 dm 3

E) 0. 00 dm 3

The correct answer is D.

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