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Aldehydes, Ketones and Carboxylic Acids Test - 3

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Aldehydes, Ketones and Carboxylic Acids Test - 3
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  • Question 1
    1 / -0

    Carboxylic group is present in_______.

    Solution

    The carboxylic group is present in Methanoic acid.

    Carboxyl group:

    • It is defined as carbonyl and hydroxyl attached to a carbon atom, which means the carbon atom is double-bonded with oxygen and a single bond with the hydroxyl.
    • And Carboxylic acid is an organic compound that consists of a carboxyl group.
    • The general formula of the class is \({R}-{C}({O}) {OH}\).
    • In this formula, \({R}\) is the alkyl or aryl group.
    • Carboxylic acids occur widely in nature.
    • However, the majority of the members of this group are manufactured synthetically.
    • The double bond presents in the structure of carboxylic acids play a very important role in the properties of the different compounds of carboxylic acids.
    • When a carbon compound is attached to the functional group \(- COOH\) (carboxyl group) then the compound refers to as carboxylic acids.
    • The above structure formula of methanoic acid is \({HCOOH}\), therefore it contains a carboxylic acid group.

    Image of Carboxyl Group:


    Hence, the correct option is (D).

  • Question 2
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    Esters react with DIBAL – H to produce

    Solution

  • Question 3
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    Which is the simplest \(\alpha\)-amino acid?

    Solution

    Glycine is the simplest \(\alpha\)-amino acid.

    Glycine is a non-essential amino acid. Glycine is the simplest amino acid having one amino and one carboxylic functional group. Glycine is the only amino acid that has no optical activity. The function of glycine is the healthy functioning of the central nervous system, acts as an anti-oxidant.

    The structure is:


    Hence, the correct option is (C).

  • Question 4
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    Which one of the following does not contain \(COOH\) group?

    Solution

    Ascorbic acid does not contain \(COOH\) group.

    Ascorbic Acid is nothing but Vitamin \(C\) (natural water-soluble vitamin). It is a reducing and antioxidant agent that is used in detoxifying reactions, against fighting bacterial infections, and in the formation of collagen in fibrous tissue, bones, connective tissue, skin, capillaries, and teeth.

    Hence, the correct option is (D).

  • Question 5
    1 / -0
    Under Wolf-Kishner reduction conditions, the conversion which may be brought about is
  • Question 6
    1 / -0

    CH3CH(OCH3)CHO is called

    Solution

    This is alpha Methoxypropionaldehyde( common name)  and  2 – Methoxypropanal (IUPAC name)

  • Question 7
    1 / -0
    The treatment of a compound with HIO4 produces CH3CHO and CH3CH2CHO. The probable compound is
  • Question 8
    1 / -0
    Directions: The following question has four choices out of which ONLY ONE is correct.

    Hydroformylation means the introduction of
  • Question 9
    1 / -0
    Directions: The following question has four choices out of which ONLY ONE is correct.

    The incorrect IUPAC name is
  • Question 10
    1 / -0
    Directions: The following question has four choices out of which ONLY ONE is correct.

    Which of the following compounds is prepared from the distillation of acetone with sulphuric acid?
  • Question 11
    1 / -0
    What is the increasing order of the rates of HCN addition to compounds A to D?

    A. HCHO
    B. CH3COCH3
    C. PhCOCH3
    D. PhCOPh 
  • Question 12
    1 / -0
    The reagent with which both acetaldehyde and acetone react easily is
  • Question 13
    1 / -0
    When acetylene is passed through dil. H2SO4 in the presence of HgSO4, which of the following compounds is formed? 
  • Question 14
    1 / -0
    Directions: The following question has four choices out of which ONLY ONE is correct.

    ________ undergoes oxidation with acidified K2Cr2O7 to give acetone.
  • Question 15
    1 / -0
    Formaldehyde on reaction with ammonia forms urotropine whose formula is 
  • Question 16
    1 / -0
    Benzaldehyde can be prepared by the hydrolysis of 
  • Question 17
    1 / -0
    Which of the following aldehydes is the most reactive towards nucleophilic addition reactions?
  • Question 18
    1 / -0
    Acetone reacts with ethyl magnesium iodide to form
  • Question 19
    1 / -0
    Benzyl alcohol is obtained from benzaldehyde by which of the following reactions? 
  • Question 20
    1 / -0

    Ozonolysis of alkenes followed by reaction with zinc dust and water gives depending on the substitution pattern of the alkene

    Solution

    Reductive ozonolysis yields aldehyde or ketone depending on the nature of alkene.


    for example: CH2=CH2  on reaction with O3/Zn will give 2 molecule of HCHO


    while CH3C(CH3)=CHCH3 on the recation with O3/Zn will give one molecule of  propanone and one molecule of acetaldehyde


    and CH3C(CH3)=C(CH3)CH3 on recation with O3/Zn will give 2 molecule of propanone.

  • Question 21
    1 / -0
    Benzene reacts with CH3COCl in the presence of anhydrous AlCl3 to give
  • Question 22
    1 / -0
    Stephan's reaction is the reduction of
  • Question 23
    1 / -0
    Benzaldehyde reacts with ammonia to form
  • Question 24
    1 / -0
    Ozonolysis of C7H14 gives 2-methyl-3-pentanone. The alkene is
  • Question 25
    1 / -0
    Cannizzaro reaction is not given by
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