The isomer of bromobutane with lowest boiling point is :
An alkene 'X' of the formula C4H8 on ozonolysis produced acetone and formaldehyde. The product obtained when 'X' reacts with HBr is
The correct increasing order of boiling points of the following compound is
A. Isopentane B. n - butyl alcohol
C. n - butyl amine D. Diethyl amine