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Sample paper 2018-19
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Q5 of 27 Page 1

Write the name of the biodegradable polymer used in orthopaedic devices.

Poly β - hydroxybutyrate – co β - - hydroxy valerate (PHBV)


Explanation: Biodegradable polymers are those that can be degraded by the forces of nature, unlike other polymers. PHBV is one of these which is used in orthopaedic devices.


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3

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Identify the compound that on hydrogenation produces an optically active compound from the following compounds:

6

Calculate the freezing point of a solution containing 8.1 g of HBr in 100 g of water, assuming the acid to be 90 % ionized. [Given: Molar mass Br = 80 g/mol, Kf water = 1.86 K kg / mol]

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7

Identify the reaction and write the IUPAC name of the product formed:

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Questions · 27
Sample paper 2018-19
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