Identify the correct decreasing order of acidity of the given car

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 Multiple Choice QuestionsMultiple Choice Questions

481.

CH3CH2CCH R butanone-2. R is

  • Hg++/ dil.H2SO4

  • KMnO4

  • KClO3

  • K2Cr2O7


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482.

Identify the correct decreasing order of acidity of the given carboxylic acid.                               


D.

-NO, group at any position shows electron withdrawing effect, thus acidic strength is increased but o-nitrobenzoate ion is stabilised by
intramolecular H-bonding hence its acidic strength is maximum.

Further, -I effect is more pronounced at p-position.


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483.

In the reaction

HCL+O+CH3MgI   A  H2O  B+Mg(OH) I

What are A and B?

  • CH3O MgI and CH3-OH

  • CH3CH2 OMg I and C2H5-O-C2H5

  • CH3CH2O Mg I and CH3-CH2-OH

  • CH3-CH2-I and CH3-CH2-OH


484.

In the given reaction,

CH3-CH2-CH2-O-CH2-CH3coldHCl [X]+[Y]

[X]+[Y] are respectively.

  • CH3-CH2-CH2OH and CH3-CH2-Cl

  • CH3-CH2-CH2-Cl and CH2-CH2-OH

  • CH3-CH2-CH2-Cl and CH2=CH2

  • CH3-CH3=CH2 and CH2=CH2


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485.

Predict the following product

(X) Cinnanaic acid is


486.

During reduction of carbonyl compounds by hydrazine and KOH, the first intermediate formed is:

  • RC≡N

  • RCONH2

  • RCH≡N

  • RCH=NH2


487.

o-toluic acid on reaction with Br2 + Fe gives:


488.

Which one of the following reactions cannot be used for the reduction of:

  • HI and red phosphorus at 200C

  • Wolff-Kishner reduction

  • Clemmensen reduction

  • Wurtz reaction


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489.

Vinegar contains

  • 100% acetic acid

  • 10- 20% acetic acid

  • 7 - 8% acetic acid

  • 1% acetic acid


490.

The compound which is not formed during the dry distillation of a mixture of calcium formate and calcium acetate is :

  • methanal

  • propanal

  • propanone

  • ethanal


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