Buta-1,3-diene and But-2-yne are:
1. Position isomers
2. Functional isomers
3. Chain isomers
4. Tautomers
The number of different substitution products possible when ethane is allowed to react with Chlorine in sunlight are:
(1) 9
(2) 6
(3) 8
(4) 5
In butane, which of the following forms has the lowest energy?
(1) Gauche form
(2) Eclipsed form
(3) Staggered form
(4) None of these
What is the relationship between the two given molecular structures?

| 1. | Enantiomers | 2. | Position isomers |
| 3. | Conformers | 4. | None of the above |
In the following carbocations, the most stabile carbocation:
(1) RCH2C+H3
(2)
(3)
(4)
The number of optical isomers of pent-3-en-2-ol is:
1. 2
2. 4
3. 8
4. 16
(1) Monovalent
(2) Bivalent
(3) Trivalent
(4) Tetravalent
Which of the following structures permits cis-trans isomerism?
1. X2C=CY2
2. XYC=CZ2
3. X2C=CXY
4. XYC=CXY
Find the number of optically active isomers for a compound containing two dissimilar asymmetric carbon atoms.
1. Two (2)
2. Three (3)
3. Four (4)
4. Five (5)
The number of geometrical isomers in case of a compound with the structure,
CH3-CH=CH-CH=CH-C2H5 are:
1. Four
2. Three
3. Two
4. Five