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Alcohols Test -...

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  • Question 1
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    Consider the following substituted ethanol G —CH2 CH2 OH

    Which group(s) when present as G gives greater equilibrium of gauche conformer than its anti counterpart ?

     

  • Question 2
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    Which of the statement given below concerning 3-methyl-2-butanol is/are correct ?

     

  • Question 3
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    Comprehension Type

    Direction (Q. Nos. 3 - 5) This section contains a paragraph, describing theory, experiments, data, etc. Three questions related to the paragraph have been given. Each question has only one correct answer among the four given options (a), (b), (c) and (d).

    Passage

    An organic compound X (C10 H12 O3 ) is not soluble in water or NaHCO3 . A solution of Br2 in CCI4 is decolourised by X forming C10 H12 O3 Br2 . X on controlled ozonolysis followed by the treatm ent with (CH3 )2 S gives Y (C8 H8 O3 ) and C2 H4 O2 . Y can also be obtained by reaction between ortho methoxy phenol with CHCI3 in KOH solution followed by acid hydrolysis.

    Q. 

    What is the correct structure of X?

     

  • Question 4
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    An organic compound X (C10 H12 O3 ) is not soluble in water or NaHCO3 . A solution of Br2 in CCI4 is decolourised by X forming C10 H12 O3 Br2 . X on controlled ozonolysis followed by the treatm ent with (CH3 )2 S gives Y (C8 H8 O3 ) and C2 H4 O2 . Y can also be obtained by reaction between ortho methoxy phenol with CHCI3 in KOH solution followed by acid hydrolysis.

    Q. 

    If X is treated with cold HBr, the major product would be

     

  • Question 5
    1 / -0.25

     

    An organic compound X (C10 H12 O3 ) is not soluble in water or NaHCO3 . A solution of Br2 in CCI4 is decolourised by X forming C10 H12 O3 Br2 . X on controlled ozonolysis followed by the treatm ent with (CH3 )2 S gives Y (C8 H8 O3 ) and C2 H4 O2 . Y can also be obtained by reaction between ortho methoxy phenol with CHCI3 in KOH solution followed by acid hydrolysis.

    Q. 

    What would be the major product if X is treated with cold concentrated H2SO4 ?

     

  • Question 6
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    One Integer Value Correct Type

    Direction (Q. Nos. 6 - 9) This section contains 4 questions. When worked out w ill result in an integer from 0 to 9 (both inclusive).

    Q. 

    How many reagents from the list given below, gives visible change when treated with 2-propanol?

     

  • Question 7
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    If 4-methyl-2-pentene is refluxed with dilute H2 SO4 , hydration reaction takes place. In principle, how many different alcohols are formed ?

     

  • Question 8
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    Consider the following reaction, how many different organic products are formed at the end of the reaction?

     

  • Question 9
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    If pentane-2, 4-diol is treated with excess of p-toluene sulphonyl chloride followed by C2 H5 ONa/C2 H5 OH, dienes are formed by E2 elimination reaction. In principle, how many different dienes are formed ?

     

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