NEET Test Series from KOTA - 10 Papers In MS WORD
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CHXII10:HALOALKANES AND HALOARENES
322749
Which of the following is incorrect with respect to physical properties of alkyl halides?
1 Alkyl halides are colourless but alkyl bromide and iodides develop colour when exposed to light.
2 Though alkyl halides are polar, still they are very slightly soluble in water.
3 The nature of intermolecular forces in alkyl halides are dipole-dipole and van der Waals' forces.
4 The boiling point of isomeric haloalkanes increase with increase in branching.
Explanation:
B.P. decreases with branching. As the branching increases for isomeric haloalkanes, there will be decrease in van der Waals' forces and thus boiling point also decreases.
CHXII10:HALOALKANES AND HALOARENES
322750
Which is the correct increasing order of boiling points of the following compounds? 1-Bromoethane, 1-Bromopropane, 1-Bromobutane, Bromobenzene
Boiling point increases with increase in molecular weight.
CHXII10:HALOALKANES AND HALOARENES
322751
Which isomer of \(\mathrm{C}_{4} \mathrm{H}_{9} \mathrm{Cl}\) will have lowest boiling point?
1 2-Chloro-2-methylpropane
2 1-Chlorobutane
3 2-Chlorobutane
4 1-Chloro-2-methyl propane
Explanation:
More branching, less boiling point.
CHXII10:HALOALKANES AND HALOARENES
322752
Which of the following compounds has lower boiling point?
1 Fluoromethane
2 Iodomethane
3 Bromomethane
4 Chloromethane
Explanation:
B.P. \(\alpha\) molar mass, and the decreasing order of b.p. is \(\mathrm{CH}_{3} \mathrm{I}>\mathrm{CH}_{3} \mathrm{Br}>\mathrm{CH}_{3} \mathrm{Cl}>\mathrm{CH}_{3} \mathrm{~F}\)
322749
Which of the following is incorrect with respect to physical properties of alkyl halides?
1 Alkyl halides are colourless but alkyl bromide and iodides develop colour when exposed to light.
2 Though alkyl halides are polar, still they are very slightly soluble in water.
3 The nature of intermolecular forces in alkyl halides are dipole-dipole and van der Waals' forces.
4 The boiling point of isomeric haloalkanes increase with increase in branching.
Explanation:
B.P. decreases with branching. As the branching increases for isomeric haloalkanes, there will be decrease in van der Waals' forces and thus boiling point also decreases.
CHXII10:HALOALKANES AND HALOARENES
322750
Which is the correct increasing order of boiling points of the following compounds? 1-Bromoethane, 1-Bromopropane, 1-Bromobutane, Bromobenzene
Boiling point increases with increase in molecular weight.
CHXII10:HALOALKANES AND HALOARENES
322751
Which isomer of \(\mathrm{C}_{4} \mathrm{H}_{9} \mathrm{Cl}\) will have lowest boiling point?
1 2-Chloro-2-methylpropane
2 1-Chlorobutane
3 2-Chlorobutane
4 1-Chloro-2-methyl propane
Explanation:
More branching, less boiling point.
CHXII10:HALOALKANES AND HALOARENES
322752
Which of the following compounds has lower boiling point?
1 Fluoromethane
2 Iodomethane
3 Bromomethane
4 Chloromethane
Explanation:
B.P. \(\alpha\) molar mass, and the decreasing order of b.p. is \(\mathrm{CH}_{3} \mathrm{I}>\mathrm{CH}_{3} \mathrm{Br}>\mathrm{CH}_{3} \mathrm{Cl}>\mathrm{CH}_{3} \mathrm{~F}\)
322749
Which of the following is incorrect with respect to physical properties of alkyl halides?
1 Alkyl halides are colourless but alkyl bromide and iodides develop colour when exposed to light.
2 Though alkyl halides are polar, still they are very slightly soluble in water.
3 The nature of intermolecular forces in alkyl halides are dipole-dipole and van der Waals' forces.
4 The boiling point of isomeric haloalkanes increase with increase in branching.
Explanation:
B.P. decreases with branching. As the branching increases for isomeric haloalkanes, there will be decrease in van der Waals' forces and thus boiling point also decreases.
CHXII10:HALOALKANES AND HALOARENES
322750
Which is the correct increasing order of boiling points of the following compounds? 1-Bromoethane, 1-Bromopropane, 1-Bromobutane, Bromobenzene
Boiling point increases with increase in molecular weight.
CHXII10:HALOALKANES AND HALOARENES
322751
Which isomer of \(\mathrm{C}_{4} \mathrm{H}_{9} \mathrm{Cl}\) will have lowest boiling point?
1 2-Chloro-2-methylpropane
2 1-Chlorobutane
3 2-Chlorobutane
4 1-Chloro-2-methyl propane
Explanation:
More branching, less boiling point.
CHXII10:HALOALKANES AND HALOARENES
322752
Which of the following compounds has lower boiling point?
1 Fluoromethane
2 Iodomethane
3 Bromomethane
4 Chloromethane
Explanation:
B.P. \(\alpha\) molar mass, and the decreasing order of b.p. is \(\mathrm{CH}_{3} \mathrm{I}>\mathrm{CH}_{3} \mathrm{Br}>\mathrm{CH}_{3} \mathrm{Cl}>\mathrm{CH}_{3} \mathrm{~F}\)
NEET Test Series from KOTA - 10 Papers In MS WORD
WhatsApp Here
CHXII10:HALOALKANES AND HALOARENES
322749
Which of the following is incorrect with respect to physical properties of alkyl halides?
1 Alkyl halides are colourless but alkyl bromide and iodides develop colour when exposed to light.
2 Though alkyl halides are polar, still they are very slightly soluble in water.
3 The nature of intermolecular forces in alkyl halides are dipole-dipole and van der Waals' forces.
4 The boiling point of isomeric haloalkanes increase with increase in branching.
Explanation:
B.P. decreases with branching. As the branching increases for isomeric haloalkanes, there will be decrease in van der Waals' forces and thus boiling point also decreases.
CHXII10:HALOALKANES AND HALOARENES
322750
Which is the correct increasing order of boiling points of the following compounds? 1-Bromoethane, 1-Bromopropane, 1-Bromobutane, Bromobenzene
Boiling point increases with increase in molecular weight.
CHXII10:HALOALKANES AND HALOARENES
322751
Which isomer of \(\mathrm{C}_{4} \mathrm{H}_{9} \mathrm{Cl}\) will have lowest boiling point?
1 2-Chloro-2-methylpropane
2 1-Chlorobutane
3 2-Chlorobutane
4 1-Chloro-2-methyl propane
Explanation:
More branching, less boiling point.
CHXII10:HALOALKANES AND HALOARENES
322752
Which of the following compounds has lower boiling point?
1 Fluoromethane
2 Iodomethane
3 Bromomethane
4 Chloromethane
Explanation:
B.P. \(\alpha\) molar mass, and the decreasing order of b.p. is \(\mathrm{CH}_{3} \mathrm{I}>\mathrm{CH}_{3} \mathrm{Br}>\mathrm{CH}_{3} \mathrm{Cl}>\mathrm{CH}_{3} \mathrm{~F}\)