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 enzyme that catalyses the conversion of glucose te ethanol and carbon (IV) oxide is
diastase
maltase
ptyalin
zymase
Correct answer is D
No explanation has been provided for this answer.
The IUPAC name of the following organic compound is HOOC - COOH
ethan - 1, 2 -dioc acid
ethanoic acid
oxalic acid
propan - 1,2-dioic acid
Correct answer is A
Oxalic acid - HOOCCOOH
It is the simplest dicarboxylic acid. It is a white crystaline solid that forms a colorless solution in water.
Which type of reaction is illustrated by the following equation? C12H26 → 5C 2H4 + C 2H6
Addition
Cracking
Hydrogenation
Polymerization
Correct answer is B
No explanation has been provided for this answer.
Which of the following compounds determines the octane rating of petrol?
1,2,3 - trimethyl pentane
2,3,5 - trimethyl octane
2,3,5 - trimethyl pentane
2,2,4 - trimethyl pentane
Correct answer is D
No explanation has been provided for this answer.
Ethene molecules can be added to one another to form a long chain compound called a
dimer
monomer
polymer
trimer
Correct answer is C
No explanation has been provided for this answer.