LPG mainly contains :

• ethyne

• butane

• methane

• ethane

Alkyl halides react with dialkyl copper reagents to give

• alkenyl halides

• alkanes

• alkyl copper halides

• alkenes

Amongst the following compounds, the optically active alkane having lowest molecular mass is

• CH₃-CH₂-CH₂-CH₃

• CH₃-CH₂-CH(CH₃)-CH₃

• 

• CH₃-CH₂-C≡CH

KMnO₄ (acidic/alkaline) is not decolourised by

• Mohr salt

• Oxalic acid

• Benzene

• Propene

When acetylene is passed through dil H₂SO₄, in presence of HgSO₄ the compound formed is

• ether

• acetaldehyde

• acetic acid

• ketone

CH₃CH₂CH₃ $\stackrel{400-600°\mathrm{C}}{\to }$ X + Y

X and Y are

• hydrogen

• methane

• hydrogen

• ethylene

How many $\mathrm{\pi }$ bonds are present in naphthalene?

• 4

• 5

• 6

• 7

468.

The number of possible alkyns with molecular formula C₅H₈ is

• 3

• 4

• 5

• 6

Ammoniacal silver nitrate form a white precipitate easily with

• CH₃C≡CH

• CH₃C≡C-CH₃

• CH₃CH=CH₂

• CH₂=CH₂

Which of the following compounds would have the highest boiling point ?

• CH₃CH₂CH₂CH₃

• CH₃NH₂

• CH₃OH

• CH₂F₂