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UTME Chemistry 2006 JAMB Past Questions and Answers, Jamb, Pre-degree, Nursing, Waec, Neco

UTME Chemistry 2006 JAMB Past Questions and Answers, Jamb, Pre-degree, Nursing, Waec, Neco

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UTME Chemistry 2006 JAMB Past Questions and Answers

1. When a crystal was added to the clear solution of its salt, the crystal did not dissolve and the solution remained unchange. This showed that the solution was

Options

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A) supersaturated

B) concentrated

C) unsaturated

D) saturated

The correct answer is D  

2. A particle that contains 11 protons, 12 neutrons and 10 electrons is probably a

Options

A) neutral non-metal

B) metallic ion

C) non-metallic ion

D) neutral metal

The correct answer is B.

3. A difference between chemical and physical change is that in a chemical change

Options

A) oxygen is consumed

B) heat is supplied

C) a reversible process oocurs

D) a new substance is formed

The correct answer is D.

4. The volume of 2.5 moles of oxygen at s.t.p is

[Molar volume of a gas at s.t.p = 22.4 dm3]

Options

A) 50.0 dm3

B) 84.0 dm3

C) 28.0 dm3

D) 56.0 dm3

The correct answer is D.

Explanation:

1 mole of gas at s.t.p = 22.4
2.5 moles → 2.5 * 22.4 = 56.00 dm3

5. Nuclear fission involves the splitting of a heavy element into two nuclei of

Options

A) nearly equal masses with a relaese of energy and radiaton

B) equal masses with a relaese of energy

C) equal masses with a release of energy and radiation

D) unequal masses without any relaese of energy

The correct answer is A.

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