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Alcohols, Phenols and Ethers Test - 4

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Alcohols, Phenols and Ethers Test - 4
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Which of the following cannot be made by using Williamson's synthesis?
  • Question 2
    1 / -0
    The major organic product in the reaction, CH3-O-CH(CH3)2 + HI → product, is
  • Question 3
    1 / -0

    Ketones react with Grignard reagent to produce

    Solution

    The Grignard Reaction is the addition of an organomagnesium halide (Grignard reagent) to a ketone or aldehyde, to form a tertiary or secondary alcohol, respectively. The reaction with formaldehyde leads to a primary alcohol.


    Grignard Reagents are also used in the following important reactions: The addition of an excess of a Grignard reagent to an ester or lactone gives a tertiary alcohol in which two alkyl groups are the same, and the addition of a Grignard reagent to a nitrile produces an unsymmetrical ketone via a metalloimine intermediate.

  • Question 4
    1 / -0
    Directions: The following question has four choices out of which ONLY ONE is correct.

    Glycerol is synthesized from
  • Question 5
    1 / -0
    Which of the following has approximately the same solubility in water as n-butyl alcohol?
  • Question 6
    1 / -0
    Directions: The following question has four choices out of which ONLY ONE is correct.

    Which of the following sets is correct in order of decreasing acid strengths?
  • Question 7
    1 / -0
    Which of the following statements is/are correct regarding the preparation of ethers?
  • Question 8
    1 / -0
    Directions: The following question has four choices out of which ONLY ONE is correct.

    The catalyst used in the manufacture of methanol from water gas is
  • Question 9
    1 / -0
    CH3CH2CH2CH2OH and CH3CH2OC2H5 are
  • Question 10
    1 / -0
    The compound obtained as a by-product in the manufacture of soap is 
  • Question 11
    1 / -0


    The above reaction is known as
  • Question 12
    1 / -0
    Directions: The following question has four choices out of which ONLY ONE is correct.

    Neopentyl alcohol reacts with HX according to
  • Question 13
    1 / -0
    Directions: The following question has four choices out of which ONLY ONE is correct.

    Which of the following chemical compounds may soon be used as a fuel for driving vehicles?
  • Question 14
    1 / -0
    Directions: The following question has four choices out of which ONLY ONE is correct.

    Which of the following has greater bond angle than the tetrahedral angle (109° - 28')?
  • Question 15
    1 / -0
    Identify the given structure.

  • Question 16
    1 / -0
    Phenol, when distilled with Zn dust, gives
  • Question 17
    1 / -0
    Directions: The following question has four choices, out of which ONLY ONE is correct.

    The strongest acid among the following is
  • Question 18
    1 / -0
    Which of the following alcohols is most likely to yield carboxylic acid  on oxidation?
  • Question 19
    1 / -0
    What is the colour of the precipitate obtained in the following reaction?

    Phenols
  • Question 20
    1 / -0
    The IUPAC name of the given compound is

  • Question 21
    1 / -0
    In the reaction C2H5OC2H5 + 4H2X + H2O, X is 
  • Question 22
    1 / -0

    Aldehydes react with Grignard reagent to produce

    Solution

    The Grignard Reaction is the addition of an organomagnesium halide (Grignard reagent) to a ketone or aldehyde, to form a tertiary or secondary alcohol, respectively. The reaction with formaldehyde leads to a primary alcohol.


    Grignard Reagents are also used in the following important reactions: The addition of an excess of a Grignard reagent to an ester or lactone gives a tertiary alcohol in which two alkyl groups are the same, and the addition of a Grignard reagent to a nitrile produces an unsymmetrical ketone via a metalloimine intermediate.

  • Question 23
    1 / -0
    The conversion of RCOOH to RCH2OH can be obtained by
  • Question 24
    1 / -0

    Isopropyl alcohol on oxidation forms:

    Solution

    Secondary alcohols are oxidized to ketones. The oxidation of isopropyl alcohol by potassium dichromate (K2Cr2O7) gives acetone, the simplest ketone: Unlike aldehydes, ketones are relatively resistant to further oxidation, so no special precautions are required to isolate them as they form

  • Question 25
    1 / -0
    Which of the following sets of compounds is correct in order of increasing boiling points?
  • Question 26
    1 / -0
    Phenol is less acidic than
  • Question 27
    1 / -0

    C6H5OCH2CH3 is called

    Solution

    C6H5OCH2CH3 is ethyl phenyl ether or phenetole is an organic compound that is an ether. Ethyl phenyl ether has the same properties as some other ethers, such as volatility, explosive vapors, and the ability to form peroxides.

    IUPAC name : Ethoxybenzene 

    Other names : Phenetole, Ethyl Phenyl Ether

  • Question 28
    1 / -0
    To prepare 3-ethylpentane-3-ol, the reagent required is
  • Question 29
    1 / -0
    Which of the following functional compounds do not give Schotten-Baumann reaction?
  • Question 30
    1 / -0

    Primary alcohols are prepared by reduction of carboxylic acids. Though lithium aluminium hydride is a strong reducing agent, it is not used in the reaction. Because

    Solution

    Carboxylic acids are reduced to primary alcohols in excellent yields by lithium aluminium hydride, a strong reducing agent.


    However, LiAlH4 is an expensive reagent, and therefore, used for preparing special chemicals only. Commercially, acids are reduced to alcohols by converting them to the esters followed by their reduction using hydrogen in the presence of catalyst (catalytic hydrogenation).

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