Practice free Halkoarenes & Haloarenes (Chemistry) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
If both halogen atoms in a dihaloalkane are present on adjacent carbon atoms, how are they classified?
The NCERT specifies: 'vicinal halides or vic-dihalides when halogen atoms are present on adjacent carbon atoms.'
What is the IUPAC name for 'sec-Butyl chloride'?
Referring to Table 6.1, the common name 'sec-Butyl chloride' corresponds to the IUPAC name '2-Chlorobutane'.
An alkyl halide where the halogen is attached to a carbon atom bonded to two other carbon atoms is classified as:
The NCERT states: 'if halogen is attached to secondary ... carbon atom, the alkyl halide is called secondary alkyl halide (2°)'. A secondary carbon atom is bonded to two other carbon atoms.
Which of the following best describes an aryl halide?
Aryl halides are defined in the NCERT as 'compounds in which the halogen atom is directly bonded to the $sp^2$-hybridised carbon atom of an aromatic ring.'
Consider the compound 1-Bromo-2,2-dimethylpropane. What is its common name?
From Table 6.1, 'neo-Pentyl bromide' is the common name corresponding to '1-Bromo-2,2-dimethylpropane' (IUPAC name).
In mono halogen substituted derivatives of benzene, what is the relationship between their common and IUPAC names?
The NCERT mentioned, 'For mono halogen substituted derivatives of benzene, common and IUPAC names are the same.'
Haloalkanes are generally represented by which homologous series formula?
According to the NCERT for alkyl halides: 'They form a homologous series represented by $C_nH_{2n+1}X$'.
Which of the following statements correctly describes the polarity of the carbon-halogen (C-X) bond in an alkyl halide?
According to the NCERT text, 'Halogen atoms are more electronegative than carbon, therefore, carbon-halogen bond of alkyl halide is polarised; the carbon atom bears a partial positive charge whereas the halogen atom bears a partial negative charge.'
Arrange the following C-X bonds in increasing order of their bond length: C-F, C-Cl, C-Br, C-I.
The NCERT text states, 'As we go down the group in the periodic table, the size of halogen atom increases. Fluorine atom is the smallest and iodine atom is the largest. Consequently the carbon-halogen bond length also increases from C—F to C—I.' This implies that C-F has the shortest bond length and C-I has the longest bond length.
What is the primary reason for the partial double bond character of the C-Cl bond in haloarenes?
The context mentions, 'C— Cl bond acquires a partial double bond character due to resonance' where 'lone pair of electrons on halogen atom are in conjugation with p -electrons of the ring'.
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