Haloalkanes and haloarenes

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Haloalkanes and haloarenes - 05

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Q1. Optically active isomers but not mirror images are called *

1 point

Anomers

Enantiomers

Diastereoisomers

Mesomers

Q2. Which of the following alkyl halides is used as a methylatingagent? *

1 point

CH3I

C2H5Br

C6H5Br

C2H5Cl

Q3 - An alkyl halide reacts with metallic sodium in dry ether. Thereaction is known as *

1 point

Fittig Reaction

Wurtz's Reaction

Sandmayer's Reaction

Gattermann's Reaction

Q4. When 2-bromobutane reacts with alcoholic KOH, the reaction is called *

1 point

Hydration

Hydrogenation

Halogenation

Dehydrohalogenation

Q5. An alkyl halide by formation of its Grignard reagent and heating with water yields propane. What is the original alkyl halide ? *

1 point

Ethyl iodide

Methyl iodide

Ethyl bromide

Propyl bromide

Q6. An organic compound A (C4H9Cl) on reaction with Na/diethyl ether gives a hydrocarbon which on monochlorination gives only one chloro derivative, then A is *

1 point

tert-butyl chloride

isobutyl chloride

n-butyl chloride

sec-butyl chloride

Q7. Elimination of bromine from 2-bromobutane results in the formation of *

1 point

Predominantly 1-butene or but-1-ene

Predominantly 2-butene or but-2ene

Predominantly 2-butyne or but-2-yne

Equimolar mixture of 1 and 2-butene

Q8. Reactivity order of halides for dehydrohalogenation is *

1 point

R –I > R – Br > R – Cl > R – F

R – F > R – Cl > R – Br > R –I

R – F > R –I > R – Br > R – Cl

R –I > R – Cl > R – Br > R – F

Q9. Arrange the following alcohols in increasing order of their reactivity towards the reaction with HCl.(CH3)2CH-OH (1), (CH3)3C-OH (2), (C6H5)3C-OH (3) *

1 point

2 < 1 < 3

1 < 2 < 3

2 < 3 < 1

3 < 1 < 2

Q10. Which of following can be used as solvent for grignard reagent ? *

1 point

C2H5OH

H2O

C2H5-O-C2H5

CH3OH

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