The indicator that is obtained by coupling the diazonium salt of

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531.

  • fiuorobenzene

  • benzene

  • 1, 2-difluoro benzene

  • 1, 3-difluoro benzene


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532.

The indicator that is obtained by coupling the diazonium salt of sulphanilic acid with N, N-dimethyl aniline is

  • phenanthroline

  • methyl orange

  • methyl red

  • phenolphthalein


B.

methyl orange

The reaction of diazotised sulphanilic acid and N,N-dimethyl aniline forms methyl orange as,

  


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533.

Acetaldoxime on reduction with Na/C2H5OH gives

  • 2-propanol

  • ethyl amine

  • acetaldehyde

  • ethanol


534.

CH3Br + KCN (alc) → X Na/ C2H5OHReduction Y

What is Y in the series?

  • CH3CN

  • C2H5CN

  • C2H5NH2

  • CH3NH2


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535.

Acetonitrile on reduction gives

  • propanamine

  • methanamine

  • ethanamine

  • None of these


536.

Methyl amine reacts with methyl iodide. For completion of reaction, how many moles of methyl iodide are required ?

  • 1

  • 2

  • 3

  • 4


537.

Complete the following reaction
RNH2 + H2SO4   →

  • [RNH3]+HSO-4

  • [RNH3]2+SO42-

  • RNH2.H2SO4

  • no reaction


538.

Primary amine (RNH2) reacts with nitrous acid to give

  • RNH3+NO2

  • ROH

  • ROR

  • None of these


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539.

IUPAC name of CH3—CHNH2—CH3 is

  • dimethyl amine

  • 2-amino propane

  • isopropylamine

  • 2-propanamine


540.

Aniline reacts with acetaldehyde to form

  • Schiffs base

  • carbylamine

  • immine

  • none of these


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