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Alcohols, Pheno...

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  • Question 1
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    Identify the final major product of the reaction sequence.

     

  • Question 2
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    Which is the best reaction for preparation of t-butyl ethyl ether?

  • Question 3
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    The major organic product formed in the following reaction is

  • Question 4
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    Consider the following chain of reactions :

    The major product formed in the final step is

  • Question 5
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    The best set of reagents for the following transformation is 

  • Question 6
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    The major organic product formed in the following reaction is

  • Question 7
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    Inorganic salts are usually insoluble in organic solvents e.g, KMnO4 is insoluble in benzene. However presence of one of the following compound in benzene makes KMnO4 soluble and gives a purple coloured solution. Which is that compound?

  • Question 8
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    Consider the following roadmap reaction :


    The most probable structure of X is

  • Question 9
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    Ethers may be used as solvents because they react only with which of the following reactants?

  • Question 10
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    Ethers are :

  • Question 11
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    Williamsons synthesis is an example of :

  • Question 12
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    Nitration of anisole gives majorly:

  • Question 13
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    Which of the following compounds will react with sodium hydroxide solution in water?

  • Question 14
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    Which is the most appropriate reagent for the following oxidation reaction?

    CH3 —CH = CH — CH2OH → CH3 —CH =CH — COOH

  • Question 15
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    Comprehension Type

    Direction (Q. Nos. 15-17) This section contains a paragraph, describing theory, experiments, data, etc. Three questions related to the paragraph have been given. Each question has only one correct answer among the four given options (a), (b), (c) and (d).

    Passage

    An organic compound X has molecular formula C11H16O and it can be resolved into enantiom ers. X does not evolve any gas with Na metal. X when treated with concentrated HBr gives C6H5OH and Y(C5H11Br). Y is chiral and has the same configuration as that of compound X.

    Q. 

    Which reaction gives X as the major product?

  • Question 16
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    An organic compound X has molecular formula C11H16O and it can be resolved into enantiom ers. X does not evolve any gas with Na metal. X when treated with concentrated HBr gives C6H5OH and Y(C5H11Br). Y is chiral and has the same configuration as that of compound X.

    Q. 

    If Y is treated with C2H5ONa/C2H5OH then how many different E2 products would be formed?

  • Question 17
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    An organic compound X has molecular formula C11H16O and it can be resolved into enantiom ers. X does not evolve any gas with Na metal. X when treated with concentrated HBr gives C6H5OH and Y(C5H11Br). Y is chiral and has the same configuration as that of compound X.

    Q. 

    If X is treated with H2SO4 it undergoes a rearrangem ent to give Z as the major organic product. What is Z?

  • Question 18
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    Direction (Q. Nos. 18-22) This section contains 5 questions. When worked out will result in an integer from 0 to 9 (both inclusive).

    Q. 

    If a mixture of a 1-propanol and 2-butanol is heated with concentrated H2SO4 at 140°C, how many different ethers would be formed?

  • Question 19
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    How many lone pairs are present in 12-crown-4?

     

  • Question 20
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    When 2-ethyl-3-methyl-1 -pentene is treated with CH3OH in H2SO4, how many different methoxy ethers would be formed in significant amount?

     

  • Question 21
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    How many of the following reactions give the cyclic ether as the major organic product?




     

  • Question 22
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    How many ether isomers exist for C5H12O?

     

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