51.

Which of the following will give carbylamine test?

• CH₃NH₂

• CH₃NHCH₃

• CH₃N(CH₃)CH₃

• CH₃CONH₂

Which of the following does not give nitroalkane?

• CH₃-N(CH₃)-CH₃ $\stackrel{{\mathrm{KMnO}}_4}{\to }$

• C₂H₅I $\stackrel{\mathrm{alc}. {\mathrm{AgNO}}_2}{\to }$

• CH₃ - CH₃ $\stackrel{\mathrm{Fuming} {\mathrm{HNO}}_3}{\to }$

• Both (a) and (b)

A compound containing two -OH groups attached with one carbon atom is unstable but which one of the following is stable?

• CH₃CH(OH)₂

• CH₃-C(OH)₃

• Cl₃CCH(OH)₂

• None of these

Which of the following is true for an ideal solution?

• $∆$H_(mix) = 0

• $∆$S_(mix) = 0

• $∆$G_(mix) = 0

• None of these

Boiling point of benzene is 353.23 K. When 1.8 g of non-volatile solute is dissolved in 90 g of benzene. Then boiling point is raised to 354.11 K. Given K_b (benzene) = 2.5 kg mol^-1. The molecular mass of non-volatile substance is

• 58 g mol^-1

• 120 g mol^-1

• 116 g mol^-1

• 60 g mol^-1

Non-stick cookwares generally have a coating of a polymer, whose monomer is

• CH₂ = CH₂

• CH₂ = CHCN

• CH₂ = CHCl

• CF₂ = CF₂

Assertion : Acetamide on reaction with KOH and bromine gives acetic acid.

Reason : Bromine catalyses hydrolysis of acetamide.

• 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.

Assertion : Mixture of benzaldehyde and acetaldehyde in hot allkaline medium gives cinnamaldehyde.

Reason : Benzaldehyde is strong electrophile than acetaldehyde.

• 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.

Assertion : Aryl sulphunic acid gives phenol or reacting with NaOH at high temperature.

Reason : This reaction is electrophilic substitution reaction.

• 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.

Assertion : All enzymes are made up of proteins and all proteins have three dimensional structures.

Reason : Secondary structures of protein are sequence of amino acids.

• 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.