NEET Practice Questions (MCQs) with Answers & Solutions

The NCERT text begins the classification by stating: 'Haloalkanes and haloarenes may be classified as mono, di, or polyhalogen (tri-,tetra-, etc.) compounds depending on whether they contain one, two or more halogen atoms in their structures.'

The NCERT text states: 'The common names of alkyl halides are derived by naming the alkyl group followed by the name of halide.'

The longest carbon chain is 4 carbons (butane). The iodine is on the first carbon, and there are two methyl groups on the second carbon. Thus, following IUPAC rules, it is named 1-Iodo-2,2-dimethylbutane.

The NCERT text states: 'Haloalkanes and haloarenes may be classified as...polyhalogen (tri-,tetra-, etc.) compounds depending on whether they contain one, two or more halogen atoms in their structures.'

The NCERT text mentions: 'A number of polyhalogen compounds e.g., dichloromethane, chloroform, iodoform, carbon tetrachloride, freon and DDT have many industrial applications.'

The NCERT text specifies: 'However, some of these compounds cannot be easily decomposed and even cause depletion of ozone layer and are proving environmental hazards.'

The NCERT text states: 'Synthetic halogen compounds, viz. chloroquine is used for the treatment of malaria'.

The NCERT text mentions: 'Certain fully fluorinated compounds are being considered as potential blood substitutes in surgery.'

The NCERT text defines 'Allylic halides' as 'compounds in which the halogen atom is bonded to an $sp^3$-hybridised carbon atom adjacent to carbon-carbon double bond (C=C)'.

According to the NCERT text, 'Benzylic halides' are 'compounds in which the halogen atom is bonded to an $sp^3$-hybridised carbon atom attached to an aromatic ring'.