Which one among the following is most reactive towards nucleophilic addition reaction?
1. | 2. | ||
3. | 4. |
Structure of the compound whose IUPAC name is 3-ethyl-2-hydroxy-4-methylhex-3-en- 5-ynoic acid is ?
1.
2.
3.
4.
The structure of isobutyl group in an organic compound is
Some meta-directing substituents in aromatic substitution are given. Which one is most
deactivating:
1. -C≡N
2. -SO3 H
3. -COOH
4. -NO2
The radical is aromatic because it has
1. 6 p-orbitals and 6 unpaired electrons
2. 7 p-orbitals and 6 unpaired electrons
3. 7 p-orbitals and 7 unpaired electrons
4. 6 p-orbitals and 7 unpaired electrons
The order of stability of the following tautomeric compound is
1. I>II>III
2. III>II>I
3. II>I>III
4. II>III>I
Among the following compounds the one that is most reactive towards electrophilic
nitration is
1. benzoic acid
2. nitrobenzene
3. toluene
4. benzene
The correct order of decreasing acid strength of trichloroacetic acid (1), trifluoroacetic
acid (2), acetic acid (3) and formic acid (4) is
1. B>A>D>C
2. B>D>C>A
3. A>B>C>D
4. A>C>B>D
Which nomenclature is not according to IUPAC system?
The correct IUPAC name of the compound
is
1. 3-ethyl-4-ethenylheptane
2. 3-ethyl-4-propylhex-5-ene
3. 3-(1-ethyl propyl) hex-1-ene
4. 4-ethyl-3-propylhex-1-ene