Q.

Given below are two statements:
Statement-I: Dimethyl glyoxime forms a six-membered covalent chelate when treated with  NiCl2 solution in presence of NH4OH
Statement-II: Prussian blue precipitate contains iron both in (+2)  and  (+3) oxidation states. In the light of the above statements, choose the most appropriate answer from the options given below:
 

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a

Statement-I is false but Statement-II is true

b

Statement I is true but statement-II is false

c

Both Statement-I and Statement –II are false.

d

Both Statement I and Statement-II are true

answer is A.

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Detailed Solution

Statement I – false as covalent bonds make 5 membered ring and H-bonding makes 6 membered ring. Statement II – Correct
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Given below are two statements:Statement-I: Dimethyl glyoxime forms a six-membered covalent chelate when treated with  NiCl2 solution in presence of NH4OHStatement-II: Prussian blue precipitate contains iron both in (+2)  and  (+3) oxidation states. In the light of the above statements, choose the most appropriate answer from the options given below: