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.
The type of reaction that is peculiar to benzene is?
addition
hydrolysis
polymerization
substitution
Correct answer is D
Benzene undergoes substitution reaction.
The formula for ethyl butanoate is
C3H7COOC2H5
C2H5COOC3H7
C4H9COOC2H5
C2H5COOC4H9
Correct answer is A
Ethyl butyrate, also known as ethyl butanoate, or butyric ether, is an ester with the chemical formula CH₃CH₂CH₂COOCH₂CH₃.
The leachate of a certain plant ash is used in local soap making because it contains
sodium chloride and potassium hydroxide
sodium hydroxide
potassium hydroxide
soluble carbonates and hydrogen carbonates
Correct answer is B
Lye is the most commonly used alkali for soap-making. The chemical name for lye is sodium hydroxide. (A lye is a metal hydroxide traditionally obtained by leaching ashes (containing largely potassium carbonate or "potash"), or a strong alkali which is highly soluble in water producing caustic basic solutions.)
How many isomers does pentane have?
6
5
4
3
Correct answer is D
No explanation has been provided for this answer.
Ethene reacts with hydrogen bromide to give
CH2Br2
CH3CH2Br
C2H2Br2
CHBr2
Correct answer is B
No explanation has been provided for this answer.