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Polar Molecules

The sample is...

Question

The sample is dissolved in hot con. $H C l$ and add few drops of $N H_{4} O H$ followed by dimethyl glyoxime soln. We get a precipitate. Guess the colour of the precipitate.

A

Orange

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B

Purple

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C

Blue

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D

Rosy red

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Solution

The correct option is D Rosy red
Addition of alcoholic solution of dimethylglyoxime to ammoniacal solution of Ni(ll) gives rosy red precipitate.

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Similar questions

Q. The sample is dissolved in hot con.

H C l

and add few drops of

N H_{4} O H

followed by dimethyl glyoxime soln. We get a rosy red precipitate. The presence of which ion is confirmed :

Q. The sample is dissolved in hot con.

H C l

and add few drops of

N H_{4} O H

, then acidified with dil. Acetic acid + few drops of potassium ferrocyanide solution. The precipitate is obtained. Guess the color of precipitate.

Q. The sample is dissolved in hot con.

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and add few drops of

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, then acidified with dil. Acetic acid + few drops of potassium ferrocyanide solution. The precipitate obtained is chocolate brown in colour. Guess the presence of element present :

N i^{2 +}

ion can be estimated by using dimethyl glyoxime and forms a cherry-red precipitate. The complex is stabilized by :

Q. Formation of a rosy-red precipitate when a slightly alkaline solution of an inorganic salt is treated with dimethyl glyoxime confirms the presence of :

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