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Aldehydes, Keto...

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  • Question 1
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    An optically active organic compound has molecular formula C5H12O(X). X on oxidation with CrO3/H2SO4 gives an achiral C5H10O. Hence, X could be

     

  • Question 2
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    Which of the following reaction will not produce an aldehyde?

  • Question 3
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    Which reagent below cannot reduce an acid chloride to an aldehyde?

  • Question 4
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    The incorrect statement regarding oxo process for synthesis of an aldehyde is

  • Question 5
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    All of the following reaction gives atleast one ketone as a significant organic product except

  • Question 6
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    All of the following results in the formation of an aldehyde except

  • Question 7
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    Consider the following reaction,

    All of the following reagents can bring about the above transformation except

  • Question 8
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    A hydrocarbon X(C7H12) on ozonolysis followed by the treatment with (CH3)2S gives C7H12O2 which gives positive Tollen’s test as well as positive iodoform test. The compoppd below satisfying the criteria of X is

  • Question 9
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    A hydrocarbon X has molecular formula C5H10 X on treatment with B2H6 in H2O2 /NaOH gives an optically active C5H12O which on treatment with CrO3/HCI / pyridine gives C5H10O which is still chiral. Which of the following can be a product of reductive ozonolysis of X?

  • Question 10
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    What is the final major product of the following reaction

  • Question 11
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    Consider the following reaction,

    (A pure enantiomer)

    Q. 

    The incorrect statement regarding X is

  • Question 12
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    Consider the following reaction sequence,

    Q. 

    The correct statement regarding X is

  • Question 13
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    A mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives

  • Question 14
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    In which of the following reactions, ketone is formed as the major organic product?

     

  • Question 15
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    Which of the following has the most acidic hydrogen?

  • Question 16
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    Consider the reaction mentioned below,

    Q. 

    The expected organic product(s) is/are

     

  • Question 17
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    A new C-C bond formation is possible in

  • Question 18
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    Comprehension Type

    Direction (Q. Nos. 18-20) 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

    A hydrocarbon A (C10H18) is capable of showing both enantiomerism as well as diastereomerism. Treatment of A either with HgSO4 / H2SO4 or B2H6 / H2O2 -NaOH results in the same carbonyl compound B. Also,

      C can also be obtained as one of the product in the following reaction.

    Q. 

    What is the most likely structure of B?

  • Question 19
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    A hydrocarbon A (C10H18) is capable of showing both enantiomerism as well as diastereomerism. Treatment of A either with HgSO4 / H2SO4 or B2H6 / H2O2 -NaOH results in the same carbonyl compound B. Also,

      C can also be obtained as one of the product in the following reaction.

    Q. 

    What is the structure of compound C?

  • Question 20
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    A hydrocarbon A (C10H18) is capable of showing both enantiomerism as well as diastereomerism. Treatment of A either with HgSO4 / H2SO4 or B2H6 / H2O2 -NaOH results in the same carbonyl compound B. Also,

     C can also be obtained as one of the product in the following reaction.

    Consider the reaction given below,

    Q. 

    How many different alcohols are expected?

  • Question 21
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    Under Wolff-Kishner reduction conditions, the conversions which may be brought about are

  • Question 22
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    How many different ketones isomer exist for C6H12O ?

     

  • Question 23
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    How many different alcohol isomers with molecular formula C5H12O can be oxidised to ketones using K2Cr2O7 - H2SO4?

     

  • Question 24
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    If all the ketone isomers of C6H10O are reduced independently with NaBH4 , how many of them will produce racemic mixture of alcohols?

     

  • Question 25
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    Consider the following reaction,


    Q. How many different diols are expected at the end of the above reaction?

     

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