Chemistry 2001 Waec Past Questions and Answers

Question 26 :

• WAEC 2001

A feasible cell was constructed by joining the two half cells below. Cu²⁺_(aq) + 2e- → Cu_(s) E^o = - 0.76 V. What is the standard e.m.f. of the cell?

A. - 1.1V
B. - 0.42V
C. +0.42V
D. +1.1V

Question 27 :

• WAEC 2001

Hydrogenation of butene yields

A. Butyne
B. Butane
C. Pentence
D. Butanol

Question 28 :

• WAEC 2001

Benzene produces more soot than ethene on burning because benzene

A. Has a higher molar mass
B. Has a higher degree off unsaturation
C. Undergoes substitution and addition reaactions
D. Is a liquid at room temperature

Question 29 :

• WAEC 2001

One of the products of combustion of pentane in excess air is

A. Pentanol
B. Pentene
C. Nitrogen (ll) oxide
D. Carbon (IV) oxide

Question 30 :

• WAEC 2001

Which of the following polymers contains nitrogen?

A. Nylon
B. Polyvinyl chloride
C. Polyethene
D. Cellulose