How many isomeric butanes are there?

• 2

• 3

• 4

• 5

At normal room temperature iodoform is

• volatile liquid

• thick viscous liquid

• gas

• solid

The formula of freon-12 is

• CClF₃

• CH₂Cl₂

• CCl₂F₂

• CH₂F₂

A gas, that relights glowing splinter, is

• H₂

• O₂

• N₂

• NO₂

185.

The complex [Co(ONO)(NH₃)₅]SO₄ is named as

• nitropentamminecobalt (III) sulphate

• nitropentamminecobalt (II) sulphate

• nitritopentamminecobalt (III) sulphate

• pentamminenitritocobalt (III) sulphate

IUPAC name of the following compound is

• 2-cyclohexylbutane

• 2-phenylbutane

• 3-cyclohexylbutane

• 3-phenylbutane

Which are isomers?

• Methanol and methoxymethane

• Ethanol and ethoxyethane

• Propionic acid and ethyl acetate

• Propionaldehyde and acetone

The compound X(C₅H₈) reacts with ammoniacal AgNO₃ to give a white precipitate and reacts with excess of KMnO₄ to give the acid, (CH₃)₂CH-COOH. Therefore, X is

• CH₂ = CH - CH = CH- CH₃

• CH₃(CH₂)₂C ≡ CH

• (CH₃)₂CH.C ≡ CH

• (CH₃)₂C = C = CH₂

NO${}_3^{-}$ is detected by ring test. Ring formed has formula

• FeSO₄.HNO₂

• FeSO₄.NO₂

• [Fe(H₂O)₅.NO]²⁺

• Fe(OH)₂.NO

Which one of the following is both nucleophilic and electrophilic?

• CH₄

• CH₃CN

• H₂O

• CH₃OH