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 type of reaction occurs between vegetable oil and plant ash extract?
Displacement
Dehydration
Neutralization
Saponiflication
Correct answer is D
No explanation has been provided for this answer.
Which of the following industrial processes is chlorines not used?
Production of polyvinylchloride (PVC)
Manufacturing of hydrochloric acid
Manufacturing of common salt
Manufacturing of domestic bleach
Correct answer is C
No explanation has been provided for this answer.
Fe2+
MnO-4
H+
Fe3+
Correct answer is B
No explanation has been provided for this answer.
3
4
5
6
Correct answer is D
2AL(s) + 6H +(aq) → 2AL3+(aq) + 3H2(g). One aluminium atom transfers 3 electrons :. Two aluminium atoms will transfer 2x3=6 electrons
Metals can be extracted from their ores by a process involving
reduction
oxidation
hydrolysis
decomposition
Correct answer is A
No explanation has been provided for this answer.