431.

Household gaseous fuel (LPG) mainly contains

• CH₄

• C₂H₂

• C₂H₄

• C₄H₁₀

Benzene reacts with chlorine in sunlight to give a final product

• CCl₄

• C₆H₆Cl₆

• C₆Cl₆

• C₆H₅Cl

The general formula of a cycloalkane is

• C_nH_n

• C_nH_2n

• C_nH_2n-2

• C_nH_{2n + 2}

The reagent used to convert an alkyne to alkene is

• Zn/HCl

• Sn/HCl

• Zn-Hg/HCl

• Pd/H₂

n-propyl bromide on treating with alcoholic KOH produces

• propane

• propene

• propyne

• propanol

The IUPAC name for tertiary butyl iodide is

• 4-iodo butane

• 2-iodo butane

• 1-iodo-3-methyl propane

• 2-iodo-2-methyl propane

The electrophile involved in the sulphonation of benzene is

• SO${}_3^{+}$

• SO${}_3^{2-}$

• H${}_3^{+}$O

• SO₃

The carbon-carbon bond length in benzene is

• in between C₂H₆ and C₂H₄

• same as in C₂H₄

• in between  C₂H₆ and C₂H₂

• in between C₂H₄ and C₂H₂

Which one of these is not true for benzene?

• It forms only one type of monosubstituted product

• There are three carbon-carbon single bonds and three carbon-carbon double bonds

• The heat of hydrogenation of benzene is less than the theoretical value

• The bond angle between the carbon-carbon bonds is 120°

Which one of the following conformations of cyclohexane is the least stable?

• Half-chair

• Boat

• Twisted-boat

• Chair