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Aldehydes and K...

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  • Question 1
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    Arrange the following compounds in decreasing order of their acid strength: i) trichloroacetic acid ii) trifluoroacetic acid iii) acetic acid and iv) formic acid

     

  • Question 2
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    The combination of a carbonyl group and a hydroxyl group on the same carbon atom is called a __________ group.

     

  • Question 3
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    CH3 CHO and  C6 H5 CH2 CHO can be distinguished chemically by:

     

  • Question 4
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    The common name for pentanedioic acid is:

     

  • Question 5
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    Which of the following acids does not exhibit optical isomerism?

     

  • Question 6
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    In the propanoate ion

     

  • Question 7
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    Aldehydes are produced on reduction of the following by DIBAL –H

     

  • Question 8
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    Which of the following statements is not correct?

     

  • Question 9
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    What compound is produced when  (CH3 )2 CHCH2 Br is subjected to the following sequence of steps:
    1. Mg, Et2 O  
    2. CO2
    3. H3 O+ ?

     

  • Question 10
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    The oxidation of toluene to benzoic acid can be stopped at the aldehyde stage, to give benzadehyde, The reagent used for the purpose is one of the following.

     

  • Question 11
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    The oxidation of toluene to benzoic acid can be stopped at the aldehyde stage. The reaction is called?

     

  • Question 12
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    The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits:

     

  • Question 13
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    In Hell –Volhard Zelinsky reaction, halogen reacts with

     

  • Question 14
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    The following reaction is

     

     

  • Question 15
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    Many naturally occurring aldehydes and ketones are used in the blending of perfumes and flavouring agents. But the preferred ones are

     

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