Preguntas de Chemistry | JAMB CBT PRACTICE 2025 | Page 11

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Question 51

Two hydrocarbons X and Y were treated with bromine water. X decolorized the solution and Y did not not. Which class of compound does Y belong? 

A)  

Benzene

B)  

Alkynes

C)  

Alkenes

D)  

Alkanes

How to solve?

Question 52

The haloalkanes used in drycleaning industries are

A)  

trichloromethane and tetrachloromethane

B)  

chloroethene and dichloroethene

C)  

trichloroethene and tetrachloroethene

D)  

chloroethane and dichloroethane

How to solve?

Question 53

One of the major uses of alkane is

A)  

as domestic and industrial fuel

B)  

in the hydrogenation of oils

C)  

in the textile industries

D)  

in the production of plastics

How to solve?

Question 54

The correct order of increasing boiling points of the following compounds C3H7OH, C7H16 and C4H10 is

A)  

C3H7OH → C4H10 → C7H16

B)  

C4H10 → C7H16 → C3H7OH

C)  

C7H16 → C3H7OH → C4H10

D)  

C4H10 → C3H7OH → C7H16

How to solve?

Question 55

The final products of the reaction between methane and chlorine in the presence of ultraviolet light are hydrogen chloride and

A)  

tricloromethane

B)  

dichloromethane

C)  

tetrachloromethane

D)  

chloromethane

How to solve?

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