Chemistry questions and answers

Chemistry Questions and Answers

Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.

2,871.

A compound that will NOT produce oxygen on heating is?

A.

potasium dioxonitrate (III)

B.

lead (IV) oxide

C.

potassium trioxochlorate (V)

D.

potassium trioxonitrate (V)

Correct answer is A

No explanation has been provided for this answer.

2,872.

mE + nF → pG + qH. In the equation above, the equilibrium constant is given by?

A.

(E)m(F)n/ (G)n(H)q

B.

(E)(F) / (G)(H)

C.

(G)p(H)q / (E)m(F)n

D.

(G)(H) / (E)(F)

Correct answer is C

No explanation has been provided for this answer.

2,873.

Oxidation of concentrated hydrochloric acid with manganese (IV) oxide liberates a gas used in the?

A.

manufacture of tooth pastes

B.

treatment of simple golitre

C.

vulcanization of rubber

D.

sterilization of water

Correct answer is D

No explanation has been provided for this answer.

2,874.

One method of driving the position of equilibrium of an endothermic reaction forward is to?

A.

increase temperature at constant pressure

B.

dcrease pressure at constant temperature

C.

cool down the apparatus with water

D.

decreases temperature at constant pressure

Correct answer is A

No explanation has been provided for this answer.

2,875.

If the rate law obtained for a given reaction is rate = k(X)n (Y)m, what is the overall order of the reaction?

A.

nm

B.

n/m

C.

n + m

D.

n - m

Correct answer is C

No explanation has been provided for this answer.