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.
What is the relative molecular mass of the compound below? [H = 1.0; C = 12.0; O = 16.0]
137
136
64
59
Correct answer is B
The molecular formula of the compound in question is \(C_6H_5COOCH_3\)
Then its relative molecular mass = 8C + 8H + 2O = 8 X 12 + 8 x 1 + 2 X 16 = 136
C\(_{3}\)H\(_{6}\)
C\(_{4}\)H\(_{8}\)
C\(_{2}\)H\(_{4}\)
CH\(_{2}\)
Correct answer is B
No explanation has been provided for this answer.
Which of the following oxide causes acid rain?
CO
NO
H\(_{2}\)O\(_{2}\)
NO\(_{2}\)
Correct answer is D
Acid rain results when sulfur dioxide (SO2) and nitrogen oxides (NOX) are emitted into the atmosphere and transported by wind and air currents.
The SO2 and NOX react with water, oxygen and other chemicals to form sulfuric and nitric acids.
The hydrolysis of proteins by diluting mineral acids produces
sucrose
glucose
amino acids
fatty acids
Correct answer is C
No explanation has been provided for this answer.
The process by which salt and water reacted in a limited way to form an acid or a base is?
Neutral process
Basic acidic process
Hydrolysis
Sublimation
Correct answer is C
- Hydrolysis is any chemical reaction in which a molecule of water breaks one or more chemical bonds.
-Salt hydrolysis is a reaction in which one of the ions from a salt reacts with water, forming either an acidic or basic solution.