Q6 of 47 Page 1

What happens when AgCl is doped with CdCl2? What is the name of this defect?

OR


What type of defect is shown by NaCl in


a. stoichiometric defects, and


b. non-stoichiometric defects?


When AgCl is doped with CdCl2, then 2 Ag+ ions are replaced by 1 Cd++ and a cationic vacancy is created. This defect is named as Impurity defect.


OR


(a) In stoichiometric defects, NaCl shows Schottky defect due to the almost similar size of sodium and chloride ions.


(b) In non- stoichiometric defects, NaCl shows Metal Excess defect due to anionic vacancies as NaCl crystal has F-centres formed in it.


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4

What is the difference between a glycosidic linkage and a peptide linkage?

OR


What is the difference between Nucleotide and Nucleoside?


 5

Why is chloroform kept in dark coloured bottles?

 7

a. Out of 0.1 molal aqueous solution of glucose and 0.1 molal aqueous solution of KCl, which one will have higher boiling point and why?

b. Predict whether van’t Hoff factor, (i) is less than one or greater than one in the following :


i. CH3COOH dissolved in water


ii. CH3COOH dissolved in benzene


 8

Complete and balance the following equations :

a. C + H2SO4 (conc.) →


b. XeF2 + PF5 →


OR


Write balanced chemical equations involved in the following reactions:


a. Fluorine gas reacts with water.


b. Phosphine gas is absorbed in copper sulphate solution.