A: Resonating structures should have the same number of unpaired electrons.
R: The energy content of all resonating structures is the same.
1. Both Assertion & Reason are true and the reason is the correct explanation of the assertion.
2. Both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is a true statement but Reason is false.
4. Both Assertion and Reason are false statements.
A: Cyclopentadienyl anion is much more stable than allyl anion.
R: Cyclopentadienyl anion is aromatic while allyl anion is only resonance stabilized.
1. Both Assertion & Reason are true and the reason is the correct explanation of the assertion.
2. Both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is a true statement but Reason is false.
4. Both Assertion and Reason are false statements.
A: Benzene and naphthalene are aromatic hydrocarbons.
R: Benzene and naphthalene contain the same number of delocalized electrons.
1. Both Assertion & Reason are true and the reason is the correct explanation of the assertion.
2. Both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is a true statement but Reason is false.
4. Both Assertion and Reason are false statements, then mark (4).
A: Alkyl groups show +l effect.
R: Halogens are -l and +R groups.
1. Both Assertion & Reason are true and the reason is the correct explanation of the assertion.
2. Both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is a true statement but Reason is false.
4. Both Assertion and Reason are false statements.
A: is the most stable alkene due to 12- hydrogen atoms
R: 'H' is more electronegative than carbon.
1. Both Assertion & Reason are true and the reason is the correct explanation of the assertion.
2. Both Assertion & Reason are true but the reason is not the correct explanation of the assertion
3. Assertion is a true statement but Reason is false.
4. Both Assertion and Reason are false statements.
A: A compound having a non-superimposable mirror image is optically active.
R: Optically active compound must contain chiral carbon.
1. Both Assertion & Reason are true and the reason is the correct explanation of the assertion.
2. Both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is a true statement but Reason is false
4. Both Assertion and Reason are false statements.
Most stable carbanion intermediate in following is :
1.
2.
3.
4. All of these are equally stable
The IUPAC name of the above mentioned compound is -
1. Citric acid
2. 3-Hydroxy pentane-1,5-dioic acid
3. 2-Hydroxypropane-1,2,3-tricarboxylic acid
4. 2-Carboxy-2-hydroxy propane-1,3-dicarboxylic acid
The pair that represents chain isomers is :-
1. | ||
2. | ||
3. | ||
4. |
The pair among the following that does not contain position isomers is -
1. | |
2. | |
3. | |
4. |