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Alcohols Test - 11
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Alcohols Test - 11
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  • Question 1/10
    1 / -0.25

    Only One Option Correct Type

    Direction (Q. Nos. 1-8) This section contains 8 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.

    Q. 

    The correct order of acidic strength of the following alcohols is

    Solutions

    Electron donating (+ / -effect) alkyl groups decreases the acidic strength.

  • Question 2/10
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    Among the alkenes which one produces tertiary butyl alcohol on acid hydration

  • Question 3/10
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    Which compound given below has the highest solubility in water ?

    Solutions

    Greater the number of hydroxy groups , greater its a bility to form H-bonds with water, hence greater solubility.

  • Question 4/10
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    What is the correct increasing order of acidity of the following?

     

     

    Solutions

     

     

    Both (I) and (II) are 2 °alcohols, less acidicthan (I) and (IV) where there is electron withdrawing chloride group is present. Between (I) and (II), (I) is less acidic as ring is considered here equivalent to two ethyl groups attached to α-carbon. (Ill) is more acidic than (IV) because in (III) Cl is at α-carbon while it is at β-carbon in (IV).

     

     

  • Question 5/10
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    What is the order of solubility of the following in water?

     

    Solutions

     

     

    Dihydric alcohols are always more soluble in water than monohydric alcohol. Between (I) and (II), (I) is more soluble as it forms intermolecular H-bonds with water while (II) forms intramolecular H-bonds which decreases its ability to form intermolecular H-bonds with water.

     

     

  • Question 6/10
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    Which of the following can be used for the distinction of ethanol from phenol?

    Solutions

    Phenol forms salt with NaOH while a liphatic alcohols do not.

  • Question 7/10
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    Consider the following reaction,

    The above reaction can best be brought about by

    Solutions

    In the below reaction , no bond with chiral carbon is disturbed, hence, configuration is retained in product.

  • Question 8/10
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    Consider the following reaction,

    The major product is  

    Solutions

     Phenolic —OH is neutralised here

  • Question 9/10
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    One or More than One Options Correct Type

    Direction : This section contains multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.

    Consider the compound shown below,

    Select the correct statement(s).

     

    Solutions

     

     

    Methanol is a liquid chemical with the formula  CH3 ​OH. It is colourless, volatile, flammable and poisonous.

    Methanol is made from the destructive distillation of wood and is chiefly synthesized from carbon monoxide and hydrogen.



    It is more acidic compound  bc2 ​ this molecule loss  H+ ions very easily. as compared to compound [A]

    It reacts very difficult to lucas reagent process via  SN1  mechanism which depends on carbocation stability.

    It is diacid base loss  H+ easily.

     

     

  • Question 10/10
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    Methanol and ethanol can be distinguished by

     

    Solutions

     

     


    No such reaction occur with CH3 OH.
    Acidic KMnO4 forms CO2 with methanol but CH3 COOH with ethanol.

     

     

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