21699.Cetane is acompound which has very good ignition property. Chemically it is
C17H34
(CH3)3C(CH2)11CH3
CH3(CH2)14CH3
None of these
21700.2-methylbutane on reacting with bromine in the presence of sunlight gives mainly
1–bromo 2–methylbutane
2–bromo 2–methylbutane
2–bromo 3–methylbutane
1–bromo 3–methylbutane
21701.Which branched chain isomer of the hydrocarbon with molecular mass 72u gives only one isomer of mono substituted alkyl halide?
Tertiary butyl chloride
Neopentane
Isohexane
Neohexane
21702.Nitrobenzene on reaction with conc. HNO3/H2SO4 at 80 – 100°C formswhich one of the following products?
1, 2–Dinitrobenzene
1, 3–Dinitrobenzene
1, 4–Dinitrobenzene
1, 2, 4–Trinitrobenzene