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Worksheets*DK024 CHAPTER 12: CHEMICAL REACTIONS OF ALKANES*
Total questions: 10
Worksheet time: 19mins
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
