Q1
Haloalkanes are compounds in which a halogen atom is attached to:
📝 SolutionHaloalkanes have a halogen bonded to an $sp^3$ hybridised carbon of an alkyl chain, e.g. $CH_3Cl$.
Q2
Haloarenes are compounds in which a halogen atom is attached directly to:
📝 SolutionIn haloarenes, the halogen is bonded directly to an $sp^2$ hybridised carbon of the benzene ring, e.g. chlorobenzene.
Q3
The IUPAC name of $CH_3CH_2Cl$ is:
📝 Solution$CH_3CH_2Cl$ has two carbons with one chlorine substituent, so its IUPAC name is chloroethane.
Q4
A haloalkane in which the halogen is attached to a carbon bonded to only one other carbon is classified as:
📝 SolutionA primary (1°) haloalkane has the halogen-bearing carbon attached to only one other carbon atom.
Q5
In an $S_N2$ reaction, the nucleophile attacks the substrate:
📝 Solution$S_N2$ is a single-step, concerted mechanism where the nucleophile attacks from the backside opposite the leaving group, causing inversion of configuration.
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Class 12 · Chemistry
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