Q3 of 27 Page 1

Draw the structure of semicarbazone of cyclopentanone.

OR


Draw the structure of product formed when propanal is treated with zinc amalgam and concentrated hydrochloric acid.


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OR


When propanal is treated with zinc amalgam and concentrated hydrochloric acid, propane is obtained. This is Clemmonsen’s reduction.


CH3CH2CHO Zn-Hg/HCl→ CH3CH2CH3


(Propanal) (Propane)


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1

What is tincture of iodine? What is its use?

 2

Predict the number of unpaired electrons in the square planar [Pt(CN)4]2- ion.

OR


Amongst [Fe(C2O4)3]3- and [Fe(NH3)6]3+ which is more stable and why?


 4

Name a carbohydrate present in liver, muscles and brain.

 5

Draw structure for the polymer used for manufacture of non-stick utensils.