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Aldehydes And Ketones Test - 22

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Aldehydes And Ketones Test - 22
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Weekly Quiz Competition
  • Question 1
    1 / -0

    Aldehydes are the first oxidation products of:

    Solution

    Oxidation of 1° alcohol gives aldehydes.

    Aldehydes are the first oxidation products of primary alcohols.

     

  • Question 2
    1 / -0

    A mixture of calcium acetetae and calcium formate on heating gives

    Solution

     

  • Question 3
    1 / -0

    The reaction of acetaldehyde with HCN followed by hydrolysis gives a product which exhibits

    Solution

     

  • Question 4
    1 / -0

    Aldehydes and keton can be distinguished by

    Solution

    Aldehydes and ketones can be distingushed by Fehiling solution. Aldehydes ketones reduce it, whereass ketone cannot reduce it.

     

  • Question 5
    1 / -0

    Which of the following is incorrect?

    Solution

    Tollens' reagent is a solution of ammoniacal silver nitrate and used for the detection of -CHO group. Aldehydes reduce Tollens' reagent and itself get oxidised to give Ag+ ions to Ag powder which forms the silver coloured mirror in the test tube. So this test is also known as silver mirror test.

     

  • Question 6
    1 / -0

    In which reaction, aromatic aldehyde is treated with acid anhydride in the presence of corresponding salt of the acid to give unsaturated aromatic acid?

    Solution

    Perkin's reaction

     

  • Question 7
    1 / -0

    Isopropyl alcohol on oxidation forms:

    Solution

    Isopropyl alcohol forms acetone on oxidation. 

    The reaction is as follows:

     

  • Question 8
    1 / -0

    Ethanal reacts with alkali to give 3-hydroxy butanal. The reaction is:

    Solution

     

  • Question 9
    1 / -0

    Reduction of    >C=O to CH can be carried out with

    Solution

    By Wolff-kishnner reaction

     

  • Question 10
    1 / -0

    Magenta is

    Solution

     

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