WAEC Chemistry Past Questions & Answers - Page 160

796.

Hydrocarbons which react with ammoniacal copper (l) chloride solution conform to the general molecular formula

A.

CnH2n

B.

CnH2n

C.

CnH2n+2

D.

CnH2n-2

Correct answer is D

No explanation has been provided for this answer.

797.

Alkenes undergo the following reactions except

A.

addition

B.

hydration

C.

polymerization

D.

substitution

Correct answer is D

No explanation has been provided for this answer.

798.

Which of the following pairs of substances can be distinguished by use of NaHCO3 solution?

A.

CH 3CH2OH and HCOOCH3

B.

CH 3CH2OH and CH3COOH

C.

CH3COOH and HCOOH

D.

CH 3CH2OH and CH3OH

Correct answer is B

No explanation has been provided for this answer.

799.

The complete hydrogenation of C 6
H 6 in the presence of nicked catalyst at 200oC gives

A.

C6H8

B.

C 6H10

C.

C 6H 12

D.

C 6H 14

Correct answer is C

No explanation has been provided for this answer.

800.

Which of the following substances is suitable solvent for perfumes?

A.

Benzene

B.

Ethanol

C.

Turpentine

D.

Water

Correct answer is B

No explanation has been provided for this answer.