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.
Allotropes of an element differ in their
physical properties
chemical properties
mass numbers
electronic configuration
Correct answer is A
No explanation has been provided for this answer.
A plastic which cannot be softened by heat is described as
thermosetting
non-biodegradable
thermoplastic
malleable
Correct answer is A
No explanation has been provided for this answer.
Biotechnology is applied in the following except
baking industry
wine production
production of antibiotics
manufacture of soap
Correct answer is D
No explanation has been provided for this answer.
20 mol dm-3
0.40 mol dm-3
2.00 mol dm-3
5.00 mol dm -3
Correct answer is B
From M1V1 = M 2
V2; m 1 = 0.50 mol dm-3; m2 = ?; v1 = 80cm 3 = 100cm3
:. m2 = m1v2/v2 = 0.50 x 80/100 = 0.40 mol dm-3
Which of the following on burning in air contributes to acid rain?
Sulphur
Magnesium
Aluminium
Zinc
Correct answer is A
No explanation has been provided for this answer.