An organic compound X with molecular formula, C7H8O is insoluble

Subject

Chemistry

Class

JEE Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

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41.

An organic compound 'X with molecular formula, C7H8O is insoluble in aqueous NaHCO3, but dissolves in NaOH. When treated with bromine water 'X' rapidly gives 'Y, C7H5OBr3. The compounds 'X' and 'Y' respectively, are

  • benzyl alcohol and 2,4,6-tribromo-3-methoxy benzene

  • m-cresol and 2,4,6-tribromo-3-methyl phenol

  • benzyl alcohol and 2,4,6-tribromo-3-methyl phenol

  • o-cresol and 3,4,5-tribromo-2-methyl phenol


B.

m-cresol and 2,4,6-tribromo-3-methyl phenol

Compound' X' (C7H8O) is insoluble in aqueous NaHCO3 but soluble in NaOH, so it is a phenol. Since the number of carbon atoms remains the same after bromination, the compound must be meta cresol and reactions takes place as follows :

         


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42.

The products obtained when benzyl phenyl ether is heated with HI in the mole ratio 1 : 1 are

1.phenol 

2. benzyl alcohol

3. benzyl iodide

4. iodobenzene

 

  • 1 and 3 only

  • 3 and 4 only

  • 1 and 4 only

  • 2 and 4 only


43.

The product P in the reaction


44.

The correct order of increasing basic nature of the following bases is

  • 2 < 5 < 1 < 3 < 4

  • 5 < 2 < 1 < 3 < 4

  • 2 < 5 < 1 < 4 < 3

  • 5 < 2 < 1 < 4 < 3


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45.

Which one of the following is a non-steroidal hormone?

  • Estradiol

  • Prostaglandin

  • Progesterone

  • Estrone


46.

Which set of term correctly identifies the carbohydrate show?

                           

1.Pentose

2. Hexose

3. Aldose

4. Ketose

5. Pyranose

6. Furanose

 

  • 1, 3 and 6

  • 1, 3, and 5

  • 2, 3 and 5

  • 2, 3 and 6


47.

Which among the following is not an antibiotic?

  • Penicillin

  • Oxytocin

  • Erythromycin

  • Tetracycline


48.

Which one of the following compounds is capable of existing in a mesa form?

  • 2,4-dibromopentane

  • 3,3-dibromopentane

  • 4-bromo-2-pentanol

  • 3-bromo-2-pentanol


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