WAEC Past Questions and Answers - Page 1474

7,366.

The collision theory proposes that

A.

reactants collide more frequently to bring about reduction in the reaction rate

B.

all collisions of reactants are effective

C.

reactants must collide with a certain minimum amount of energy to from products

D.

the fewer the collisions the faster the reaction rate

Correct answer is C

No explanation has been provided for this answer.

7,367.

When concentrated H2
SO 4 is added to NaCI (s), the gas evolved

A.

bleaches damp blue litmus paper

B.

forms a white preciptate with AgNO3(aq)

C.

forms a white precipitate with BaCI2(aq)

D.

turns moist red litmus paper blue

Correct answer is A

No explanation has been provided for this answer.

7,368.

The table below illustrates the supply schedule of maize. Use it to answer this question.

                    PRICE(#)      QUANTITY SUPPLIED(kg)
                       24                    480
                       16                    400 

Determine the elasticity of supply for maize.

A.

0.3

B.

0.4

C.

0.5

D.

0.6

Correct answer is B

No explanation has been provided for this answer.

7,369.

The table below illustrates the supply schedule of maize. Use it to answer this question.

                            PRICE(#)           QUANTITY SUPPLIED (kg)
                               24                           480
                               16                           400

Calculate the percentage change in price for maize.

 

A.

8.0%

B.

33.3%

C.

50.0%

D.

66.7%

Correct answer is B

No explanation has been provided for this answer.

7,370.

The table below illustrates the supply schedule of maize. Use it to answer this question.

                          PRICE(#)           QUANTITY SUPPLIED(kg)
                            24                          480
                            16                          400

The percentage change in quantity supplied for maize is

A.

16.7%

B.

20%

C.

80%

D.

83.3%

Correct answer is A

No explanation has been provided for this answer.