WAEC Past Questions and Answers - Page 1738

8,686.

A solution of pH 7 is

A.

acidic

B.

neutral

C.

concentrated

D.

dilute

E.

saturated

Correct answer is B

No explanation has been provided for this answer.

8,688.

''Equal volumes of all gases at the same temperature and pressure contain the same number of molecules'' is an expression of

A.

Charles Law

B.

Boyle's Law

C.

Avogadro's Law

D.

Graham's Law

E.

Gay Lussac's Law

Correct answer is C

No explanation has been provided for this answer.

8,689.

What is the likely formula of compound formed between element M in group two and element X in group seven?

A.

M7X2

B.

M2X

C.

M2X7

D.

MX2

E.

MX6

Correct answer is D

No explanation has been provided for this answer.

8,690.

The alkali metals exhibit similar chemical properties because

A.

they occur in the combined state

B.

they have the same number of vallence electrons

C.

they form crystalline salts

D.

their salts are soluble in water

E.

they are highly reactive

Correct answer is B

No explanation has been provided for this answer.