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.
An example of a polysaccharides is?
dextrose
mannose
glucose
starch
Correct answer is D
No explanation has been provided for this answer.
Alkanals can be differentiated from alkanones by reaction with?
2,4-dinitrophenylhydrazine
hydrogen cyanide
sodium hydrogen sulphite
Tollen's reagent
Correct answer is D
No explanation has been provided for this answer.
The characteristics reaction of carbonyl compounds is?
substitution
elimination
addition
saponfication
Correct answer is C
No explanation has been provided for this answer.
An organic compound containing 40.1% carbon and 6.6% hydrogen has an empirical formula of?
C2H4O2
C2H3O2
CH2O
CH3O
Correct answer is C
Carbon Hydrogen
40.1..........................6.67
(3.342) / (3.342).............(6.67) / (3.342)
1 1.9958
1 Ω 2
CH2O
hydroxyl group
carboalkoxyl group
carbonyl group
carboxyl group
Correct answer is D
No explanation has been provided for this answer.