Chemistry questions and answers

Chemistry Questions and Answers

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.

2,496.

The reaction of zinc with copper (ll) ions in aqueous solution can be represented as follows: Cu 2+(aq) +Zn (s) → Cu(s) + Zn 2+(aq).Which of the following is the most complete description of this reaction?

A.

Copper (ll) ions are being reduced

B.

Zinc is being oxidized.

C.

Copper (ll) ions and zinc are being reduced

D.

copper (ll) ions and zinc are being oxidized

E.

copper(ll) ions are being reduced and zinc oxidized

Correct answer is E

No explanation has been provided for this answer.

2,497.

Which of the following substances are all made by the process of polymerization?

A.

Nylon and soap

B.

Ethanoic acid margarine and ethanol

C.

Nylon and artificial rubber

D.

Soap and butane

E.

Margarine and nylon

Correct answer is C

No explanation has been provided for this answer.

2,498.

Which are the correct IUPAC names for H-CO\(_2\)CH\(_3\) and CH \(\equiv\) CH

A.

Methyl methanoate and ethene

B.

Metanoic acid and ethyne

C.

Ethyl methanoate and ethyne

D.

Methyl methanoate and ethyne

E.

Ethanoic acid and ethene

Correct answer is D

No explanation has been provided for this answer.

2,500.

An example of oxidation - reduction enzyme is

A.

amylase

B.

protease

C.

lipase

D.

dehydrogenase

Correct answer is D

No explanation has been provided for this answer.