Correct option is A
The correct answer is (a) Butane and 2-methylpropane
Explanation:
- Butane (C₄H₁₀) is a straight-chain alkane with four carbon atoms.
- 2-Methylpropane (C₄H₁₀), also known as isobutane, is a branched-chain alkane with the same molecular formula (C₄H₁₀) but a different structure.
Since both compounds have the same molecular formula (C₄H₁₀) but different structural arrangements, they are structural isomers.
Why the other options are incorrect:
- b. Propane and Butane: These compounds have different molecular formulas (C₃H₈ for propane and C₄H₁₀ for butane), so they are not isomers.
- c. Propane and 2-methylpropane: Propane has the formula C₃H₈, while 2-methylpropane (a branched isomer of butane) has C₄H₁₀. They have different molecular formulas, so they are not isomers.
- d. Butane and 2-ethylbutane: Butane (C₄H₁₀) and 2-ethylbutane (C₆H₁₄) have different molecular formulas, so they are not isomers.
English
100 Questions
100 Marks
90 Mins
are:
