The reaction,

C₆H₅ONa + CO₂ +H₂O $\to$C₆H₅OH + NaHCO₃ suggests that

• phenol is a stronger acid than carbonic acid

• carbonic acid is a stronger acid than phenol

• water is a stronger acid than phenol

• None of these.

Assertion : 2-Methyl-1, 3-butadiene is the monomer of natural rubber.

Reason : Natural rubber is formed through anionic addition polymerisation. 

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false.

Which one of the following does not give white precipitate with acidified silver nitrate solution?

• 

• CH₂ = CH - Cl

• CH₂ = CH - CH₂ - Cl

• Both (a) and (b)

Glucose $\stackrel{\mathrm{HCN}}{\to } \stackrel{\mathrm{Hydrolysis}}{\to } \stackrel{\mathrm{HI}, \mathrm{heat}}{\to }$ A,

A is

• heptanoic acid

• 2-iodohexane

• heptane

• heptanol

Which is not classified as thermoplastics?

• Polyethylene

• Polystyrene

• Bakelite

• Neoprene

Assertion : Phenol is more acidic than ethanol.

Reason : Phenoxide ion is resonance stabilised.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both assertion and reason are true but reason is not the correct explanation of assertion

• If assertion is true but reason is false

• If both assertion and reason are false.

Arsenic drugs are mainly used in the treatment of

• Jaundice

• Typhoid

• Syphilis

• Cholera

58.

Which of the following reagents cannot be used for the given conversion?

• Sn-HCl

• Fe-HCl

• LiAlH₄

• Pd/C

Oil used as frothing agent in froth-floatation process is

• pine oil

• mustard oil

• coconut oil

• olive oil

Which amine amongst the following will answer positively the carbylamine test?

• C₆H₅ - NH - CH₃

• 

• C₆H₅ - NH - C₄H₉

• C₆H₅ - N(C₂H₅)₂