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.

2,151.

The reaction represented by the equation NaOH(aq) + HCI(aq) → NaCI(aq) + H2O(/)

A.

is a double decomposition

B.

is a neutralization

C.

is reversible

D.

is usually catalysed

E.

attains equilibrium after a few seconds

Correct answer is B

No explanation has been provided for this answer.

2,152.

The following are uses of sulphur except

A.

manufacture of tetraoxosulphate (VI) acid

B.

prevention of the growth of fungi

C.

vulcanization rubber

D.

manufacture of dyes

E.

coating of steel to prevent rusting

Correct answer is E

No explanation has been provided for this answer.

2,153.

An acid present in proteins is

A.

lactic acid

B.

amino acid

C.

propanoic acid

D.

palmitic acid

E.

stearic acid

Correct answer is B

No explanation has been provided for this answer.

2,154.

Equilibrium is said to be attained in reversible reaction when

A.

all the reactants have been used up

B.

all the products have been formed

C.

there is no further change in temperature

D.

the rates of the forward and backward reactions are equal

E.

the rate of formation of the products decreases with time

Correct answer is D

No explanation has been provided for this answer.

2,155.

Z in diagram above represents

A.

heat of reaction

B.

activation energy

C.

free energy

D.

entropy of reaction

Correct answer is A

No explanation has been provided for this answer.