*DK024 CHAPTER 12: CHEMICAL REACTIONS OF ALKANES*

What is the functional group of alkanes?

• Amide

• Hydroxyl

• Carbon-carbon double bond

• None

What is the colour of Bromine after react with alkanes in dichloromethane?

• Purple colour remain unchanged

• Purple colour decolourised

• Reddish brown remain unchanged

• Reddish brown decolourised.

Give the name of reaction, when alkanes react with bromine in sunglight.

• Hydrogenation

• Halogenation

• Hydration

• Hydrohalogenation

What is the function of sunlight?

• To provide colour for homolytic cleavage

• To provide energy for homolytic cleavage

• To provide colour for heterolytic cleavage

• To provide energy for heterolytic cleavage

What happened if alkane reacts with limited oxygen?

• Produced carbon dioxide and water

• Produced carbon monoxide and water

• Produced oxygen and water

• Produced soot and water

What happened to bromine when reacts with sunglight in halogenation reaction?

• produced electrophiles

• produced nucleophiles

• produced free radicals

• produced all above

What is the name of this step?

• Termination Step Chain

• Propagation Step Chain

• Initiation Step Chain

• Cleavage Step Chain

Which of the step TRUE about termination steps chain in halogenation.

• 
• 
• 
• 

What is the important in initiation step

• Moon

• Sunlight

• Star

• Earth

What is the type of cleavage when the present of sunlight in initiation step chain

• Heterolytic cleavage

• Hoholytic clavage

• Homoterolytic cleavage

• Homolytic clavage