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.

671.

Which of the following are mixtures? 
I. Petroleum 
II. Rubber latex 
III. Vulcanizer's solution 
IV. Carbon sulphide

A.

I, II and III

B.

I, II and IV

C.

I and II only

D.

I and IV

Correct answer is A

No explanation has been provided for this answer.

672.

The refreshing and characteristic taste of soda water and other soft drinks is as a result of the presence of

A.

carbon(IV)oxide

B.

carbon(ll)oxide

C.

soda

D.

glucose

Correct answer is A

No explanation has been provided for this answer.

673.

The salt that reacts with dilute hydrochloric acid to produce a pungent smelling gas which decolourizes acidified purple potassium tetraoxomanganate (VII) solution is

A.

Na\(_2\)SO\(_4\)

B.

Na\(_2\)SO\(_3\)

C.

Na\(_2\)S

D.

Na\(_2\)CO\(_3\)

Correct answer is B

No explanation has been provided for this answer.

674.

(I). 3CuO(s) + 2NH3(g) -----> 3Cu(s) + 3H2O(l) + N2(g) 
(II). 2NH3(g) + 3Cl2(g) -----> 6HCl(g) + N2(g) 
(III). 4NH3(g) + 3O2(g) -----> 6H2O(l) + N2(g) 
The reactions represented by the equations above demonstrate the

A.

basic properties of ammonia

B.

acidic properties of ammonia

C.

reducing properties of ammonia

D.

oxidizing properties of ammonia

Correct answer is C

No explanation has been provided for this answer.

675.

mE + nF -----> pG + qH 
In the equation shown, the equilibrium constant is given by?

A.

\(\frac{[E]^m[F]}{[G]^p[H]^q}\)

B.

\(\frac{[E][F]}{[G][H]}\)

C.

\(\frac{[G]^p[H]^q}{[E]^m[F]^n}\)

D.

\(\frac{[G][H]}{[E][F]}\)

Correct answer is C

No explanation has been provided for this answer.