Post Utme Chemistry Past Questions and Answers

Question 561:

An efflorescent compound us a substance that ____________

A. Absorbs water from air without dissolving in it
B. Is capable of giving off coloured luminosity
C. Gives out water from the air and dissolves.

Question 562:

Which of the following bonds exist in crystalline ammonium chloride (NH₄Cl)?

A. Ionic and covalent
B. Ionic and co-ordinate
C. Ionic, covalent and co-ordinate
D. Covalent, co-ordinate and metallic

Question 563:

Which of the following is a neutralization reaction? Addition of ____________

A. Nitric acid to hydrochloride acid
B. Nitric acid to sulphate acid
C. Nitric acid to distilled water
D. Nitric acid to sodium hydroxide

Question 564:

In preparation of carbon monoxide by heating ethanedoic with concentrated sulphuric acid, act as ____________

A. An oxidizing agent
B. Reducing agent
C. A dehydrating agent
D. Reaction medium

Question 565:

Matter is defined by which of the following?

A. Mass and weight
B. Volume and occupies space
C. Mass and temperature
D. Mass and occupies spaces