The pair of structures given below represent-
1. | Enantiomers | 2. | Position isomers |
3. | Conformers | 4. | None of the above |
Geometrical isomerism is caused by-
1. Restricted rotation around C=C bond.
2. The presence of one asymmetric carbon atom.
3. The different groups attached to the same functional group.
4. None of the above.
A total number of structural isomeric aldehydes and ketones that can exist with
the molecular formula C5H10O are :
1. 5
2. 8
3. 6
4. 7
Alkyl cyanide \(R-C \equiv N\) and alkyl isocyanides \(R- \overset{+}{N} \equiv C^-\) are:
1. | Tautomers | 2. | Metamers |
3. | Functional isomers | 4. | Geometrical isomers |
The optically active compound among the following is-
1. | Glycerine | 2. | Acetaldehyde |
3. | Glyceraldehyde | 4. | Acetone |
Glucose and fructose are-
1. | Chain isomers | 2. | Position isomers |
3. | Functional isomers | 4. | Optical isomers |
The optically active compound among the following is-
1. Isobutyric acid
2. beta-Chloropropionic acid
3. Propionic acid
4. alpha-Chloropropionic acid
The correct order of acidity among the following is:
1. CH2=CH2 >CH≡CH > CH3C≡CH > CH3-CH3
2. CH≡CH > CH3-C≡CH > CH2=CH2 >CH3-CH3
3. CH≡CH > CH2=CH2 > CH3-C≡CH > CH3-CH3
4. CH3-CH3 > CH2=CH2 > CH3-C≡CH > CH≡CH
The compound that gives the most stable carbonium ion after C- Cl bond ionisation among the following is-
1. | 2. | ||
3. | 4. |
The enolic form of ethyl acetoacetate is given below. The number of sigma and pi bonds in the enolic form of ethyl acetoacetate are -
1. 18 sigma bonds and 2 pi-bonds
2. 16 sigma bonds and 1 pi-bond
3. 9 sigma bonds and 2 pi-bonds
4. 9 sigma bonds and 1 pi-bond