JEE Main 2022 (Online) 24th June Morning Shift | Practical Organic Chemistry Question 50 | Chemistry

During the qualitative analysis of salt with cation y²⁺, addition of a reagent (X) to alkaline solution of the salt gives a bright red precipitate. The reagent (X) and the cation (y²⁺) present respectively are :

Dimethylglyoxime and Ni²⁺

Dimethylglyoxime and Co²⁺

Nessler's reagent and Hg²⁺

Nessler's reagent and Ni²⁺

JEE Main 2021 (Online) 27th August Evening Shift

MCQ (Single Correct Answer)

-1

Which one of the following tests used for the identification of functional groups in organic compounds does not use copper reagent?

Barfoed's test

Seliwanoff's test

Benedict's test

Biuret test for peptide bond

JEE Main 2021 (Online) 27th August Morning Shift

MCQ (Single Correct Answer)

-1

Acidic ferric chloride solution on treatment with excess of potassium ferrocyanide gives a Prussian blue coloured colloidal species. It is :

Fe₄[Fe(CN)₆]₃

K₅Fe[Fe(CN)₆]₂

HFe[Fe(CN)₆]

KFe[Fe(CN)₆]

JEE Main 2021 (Online) 26th August Morning Shift

MCQ (Single Correct Answer)

-1

Which one of the following complexes is violet in colour?

[Fe(CN)₆]^4$$-$$

[Fe(SCN)₆]^4$$-$$

Fe₄[Fe(CN₆)]₃ . H₂O

[Fe(CN)₅NOS]^4$$-$$

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