Haloalkanes and Haloarenes

Which of the following chlorinated compounds is responsible for depletion of the ozone layer?

1. Chloroform
2. Carbon tetrachloride
3. Chlorofluorocarbons (CFCs)
4. Vinyl chloride

Grignard reagents react readily with carbon dioxide followed by hydrolysis to produce:

1. Alcohols
2. Aldehydes
3. Carboxylic acids
4. Ketones

Which reagent is used in the Swarts reaction to prepare alkyl fluorides?

1. NaI
2. AgNO3
3. SbF3
4. Zn dust

In the Finkelstein reaction, an alkyl chloride is converted into an alkyl iodide using:

1. NaCl in water
2. NaI in acetone
3. KI in water
4. Mg in dry ether

Which reaction is commonly used to prepare a higher alkane from an alkyl halide using sodium metal in dry ether?

1. Finkelstein reaction
2. Swarts reaction
3. Wurtz reaction
4. Sandmeyer reaction

The major product obtained when 2-bromobutane is heated with alcoholic KOH is:

1. Butane
2. Butan-2-ol
3. But-2-ene
4. Ethene

The conversion of chlorobenzene into phenol requires:

1. Dilute HCl
2. Aqueous NaOH at high temperature and pressure
3. Sodium metal
4. Zinc dust

When chlorobenzene undergoes nitration, the nitro group is introduced mainly at:

1. Meta position only
2. Ortho and para positions
3. Para position only
4. Random positions

The correct order of reactivity of alkyl halides towards nucleophilic substitution is:

1. R-F > R-Cl > R-Br > R-I
2. R-I > R-Br > R-Cl > R-F
3. R-Cl > R-Br > R-I > R-F
4. R-Br > R-I > R-Cl > R-F

Which of the following alkyl halides undergoes the SN1 reaction most readily?

1. CH3Cl
2. CH3CH2Cl
3. (CH3)2CHCl
4. (CH3)3CCl

Which of the following statements about chlorobenzene is correct?

1. The C-Cl bond is purely a single bond.
2. Chlorobenzene readily undergoes SN2 reactions.
3. The C-Cl bond possesses partial double-bond character due to resonance.
4. Chlorobenzene is more reactive than methyl chloride towards nucleophilic substitution.

Which reagent is used to prepare a Grignard reagent from an alkyl halide?

1. Sodium in water
2. Magnesium in dry ether
3. Zinc dust
4. Concentrated sulfuric acid

Which of the following compounds is least reactive towards nucleophilic substitution?

1. CH3Cl
2. CH3CH2Cl
3. C6H5Cl
4. CH3CH2CH2Cl

The major product formed when bromoethane reacts with alcoholic KOH is:

1. Ethanol
2. Ethene
3. Ethanal
4. Ethyne

Which of the following alkyl halides undergoes the SN2 reaction at the fastest rate with aqueous NaOH?

1. (CH3)3CBr
2. CH3CH2Br
3. (CH3)2CHBr
4. C6H5CH2Br