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17. Model Question Paper I
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Q25 of 30 Page 246

Three structures are given below in which two glucose units are linked. Which of these linkages between glucose units are between C1 and C4 and which linkages are between C1 and C6.Is the compound (I) reducing in nature? Explain.


I and III have the C1 and C4 linkage between them whereas the II compound has a C1 and C6 linkage between them.


Yes compound I is a reducing sugar as C1 of glucose in solution is free and shows reducing properties.


Compound I is lactose.




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23

Ethers can be prepared by Williamson synthesis in which an alkyl halide is reacted with sodium alkoxide. Explain why di-tert-butyl ether can’t be prepared by this method.

24

Suggest a route by which the following conversion can be accomplished.


26

Note : A statement of assertion followed by a statement of reason is given. Choose the correct option out of the options given below each equation.

Assertion : Molarity of a solution in liquid state changes with temperature.


Reason : The volume of a solution changes with change in temperature.


27

Note : A statement of assertion followed by a statement of reason is given. Choose the correct option out of the options given below each equation.

Assertion : p-nitrophenol is more acidic than phenol.


Reason : Nitro group helps in the stabilisation of the phenoxide ion by dispersal of negative charge due to resonance.


Questions · 30
17. Model Question Paper I
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