CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317554
Assertion : Alkynes do not show geometrical isomerism. Reason : Geometrical isomerism arises due to the restricted rotation of a double bond
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Alkynes have linear structure and do not show geometrical isomerism. So , the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317555
The number of isomers of the compound with molecular formula \(\mathrm{C}_{2} \mathrm{H}_{2} \mathrm{Br}_{2}\) is
1 4
2 3
3 5
4 2
Explanation:
Three isomers are possible having molecular formula \(\mathrm{C}_{2} \mathrm{H}_{2} \mathrm{Br}_{2}\). The isomers are as follows:
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317557
In the following structure, the double bonds are marked as I, II, III and IV Geometrical isomerism is not possible at site (s):
1 III
2 I
3 I and III
4 III and IV
Explanation:
JEE - 2017
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317558
Which of the following is correct set of physical properties of the geometrical isomers? [DM - Dipole Moment, BP - Boiling Point, MP - Melting point, S - Stability]
1 DM - I > II, BP - I > II, MP - II > I, S - I > II
2 DM - II > I, BP - II > I, MP - II > I, S - II > I
3 DM - I > II, BP - I > II, MP - I > II, S - I > II
4 DM - II > I, BP - II > I, MP - I > II, S - I > II
Explanation:
first has more dipole moment than the second. Therefore, its boiling point will be higher. Melting point depends on symmetry; therefore, I was higher melting point than II. Steric crowding in I is more than II; therefore, I is more stable than II.
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CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317554
Assertion : Alkynes do not show geometrical isomerism. Reason : Geometrical isomerism arises due to the restricted rotation of a double bond
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Alkynes have linear structure and do not show geometrical isomerism. So , the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317555
The number of isomers of the compound with molecular formula \(\mathrm{C}_{2} \mathrm{H}_{2} \mathrm{Br}_{2}\) is
1 4
2 3
3 5
4 2
Explanation:
Three isomers are possible having molecular formula \(\mathrm{C}_{2} \mathrm{H}_{2} \mathrm{Br}_{2}\). The isomers are as follows:
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317557
In the following structure, the double bonds are marked as I, II, III and IV Geometrical isomerism is not possible at site (s):
1 III
2 I
3 I and III
4 III and IV
Explanation:
JEE - 2017
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317558
Which of the following is correct set of physical properties of the geometrical isomers? [DM - Dipole Moment, BP - Boiling Point, MP - Melting point, S - Stability]
1 DM - I > II, BP - I > II, MP - II > I, S - I > II
2 DM - II > I, BP - II > I, MP - II > I, S - II > I
3 DM - I > II, BP - I > II, MP - I > II, S - I > II
4 DM - II > I, BP - II > I, MP - I > II, S - I > II
Explanation:
first has more dipole moment than the second. Therefore, its boiling point will be higher. Melting point depends on symmetry; therefore, I was higher melting point than II. Steric crowding in I is more than II; therefore, I is more stable than II.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317554
Assertion : Alkynes do not show geometrical isomerism. Reason : Geometrical isomerism arises due to the restricted rotation of a double bond
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Alkynes have linear structure and do not show geometrical isomerism. So , the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317555
The number of isomers of the compound with molecular formula \(\mathrm{C}_{2} \mathrm{H}_{2} \mathrm{Br}_{2}\) is
1 4
2 3
3 5
4 2
Explanation:
Three isomers are possible having molecular formula \(\mathrm{C}_{2} \mathrm{H}_{2} \mathrm{Br}_{2}\). The isomers are as follows:
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317557
In the following structure, the double bonds are marked as I, II, III and IV Geometrical isomerism is not possible at site (s):
1 III
2 I
3 I and III
4 III and IV
Explanation:
JEE - 2017
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317558
Which of the following is correct set of physical properties of the geometrical isomers? [DM - Dipole Moment, BP - Boiling Point, MP - Melting point, S - Stability]
1 DM - I > II, BP - I > II, MP - II > I, S - I > II
2 DM - II > I, BP - II > I, MP - II > I, S - II > I
3 DM - I > II, BP - I > II, MP - I > II, S - I > II
4 DM - II > I, BP - II > I, MP - I > II, S - I > II
Explanation:
first has more dipole moment than the second. Therefore, its boiling point will be higher. Melting point depends on symmetry; therefore, I was higher melting point than II. Steric crowding in I is more than II; therefore, I is more stable than II.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317554
Assertion : Alkynes do not show geometrical isomerism. Reason : Geometrical isomerism arises due to the restricted rotation of a double bond
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but Reason is correct.
Explanation:
Alkynes have linear structure and do not show geometrical isomerism. So , the option (2) is correct.
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317555
The number of isomers of the compound with molecular formula \(\mathrm{C}_{2} \mathrm{H}_{2} \mathrm{Br}_{2}\) is
1 4
2 3
3 5
4 2
Explanation:
Three isomers are possible having molecular formula \(\mathrm{C}_{2} \mathrm{H}_{2} \mathrm{Br}_{2}\). The isomers are as follows:
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317557
In the following structure, the double bonds are marked as I, II, III and IV Geometrical isomerism is not possible at site (s):
1 III
2 I
3 I and III
4 III and IV
Explanation:
JEE - 2017
CHXI12:ORGANIC CHEMISTRY SOME BASIC PRINCIPLES AND TECHNIQUES
317558
Which of the following is correct set of physical properties of the geometrical isomers? [DM - Dipole Moment, BP - Boiling Point, MP - Melting point, S - Stability]
1 DM - I > II, BP - I > II, MP - II > I, S - I > II
2 DM - II > I, BP - II > I, MP - II > I, S - II > I
3 DM - I > II, BP - I > II, MP - I > II, S - I > II
4 DM - II > I, BP - II > I, MP - I > II, S - I > II
Explanation:
first has more dipole moment than the second. Therefore, its boiling point will be higher. Melting point depends on symmetry; therefore, I was higher melting point than II. Steric crowding in I is more than II; therefore, I is more stable than II.
