Question

Which branched chain isomer of the hydrocarbon with molecular mass `72mu` gives only one isomer of mono substituted alky halide ?
A. Tetrtiary butyl chloride
B. neopentane
C. Isohexane
D. Neohexane

Answer 1

Correct Answer - B
Molar mass of `C_(n)+H_(2n+2)`
`72=12n+(2n+2)therefore n=5`
Since it gives only a single of `C_(5)H_(11)Cl` hence