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

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

481.

CH3CH2CCH R butanone-2. R is

  • Hg++/ dil.H2SO4

  • KMnO4

  • KClO3

  • K2Cr2O7


482.

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


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


Advertisement
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


Advertisement

487.

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


B.

Methyl group has + I effect and α-and p-directing however -COOH group is m-directing.Thus, the new incoming electrophile occupies the position which should be meta with respect to -COOH group and para with respects to methyl group.


Advertisement
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


Advertisement
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


Advertisement