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.
Which of the following substances is a heavy chemical?
Ammonia
Barim Hydroxide
Hydrochloric acid
Tetraoxosulphate(VI)acid
Correct answer is D
No explanation has been provided for this answer.
Which of the following compounds is a secondary alkanol?
Ethanol
2-methylbutan-2-ol
3-methylpentan-2-ol
Propan-1-ol
Correct answer is C
A secondary alkanol has two alkyl groups attached to the carbon atom carrying the hydroxyl group. drawing the structures of the alkanol listed above option C is the correct answer.
Starch could be converted to glucose by the process of
Condensation
Dehydration
Fermentation
Hydrolysis
Correct answer is D
No explanation has been provided for this answer.
Esterification
Neutralization
Polymerization
Saponification
Correct answer is D
No explanation has been provided for this answer.
A compound has an empirical formular CH2O and molecular mass of 90.
[H = 1.00, C = 12.0, O = 16.0]
C4H10O2
C3H10O2
C3H6O3
C2H2O4
Correct answer is C
(CH2O)n = 90; (12 + (1 x 2) + 16)n = 90
(12 + 2 + 16)n = 90; 30n = 90; n = \(\frac{90}{30}\); n = 3
(CH2O)3 = Molecular formula ; = C3H6O3