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1
JEE Main 2021 (Online) 27th August Evening Shift
MCQ (Single Correct Answer)
+4
-1
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Which one of the following tests used for the identification of functional groups in organic compounds does not use copper reagent?
A
Barfoed's test
B
Seliwanoff's test
C
Benedict's test
D
Biuret test for peptide bond
2
JEE Main 2021 (Online) 27th August Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Acidic ferric chloride solution on treatment with excess of potassium ferrocyanide gives a Prussian blue coloured colloidal species. It is :
A
Fe4[Fe(CN)6]3
B
K5Fe[Fe(CN)6]2
C
HFe[Fe(CN)6]
D
KFe[Fe(CN)6]
3
JEE Main 2021 (Online) 26th August Morning Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
Which one of the following complexes is violet in colour?
A
[Fe(CN)6]4$$-$$
B
[Fe(SCN)6]4$$-$$
C
Fe4[Fe(CN6)]3 . H2O
D
[Fe(CN)5NOS]4$$-$$
4
JEE Main 2021 (Online) 20th July Evening Shift
MCQ (Single Correct Answer)
+4
-1
Change Language
In Carius method, halogen containing organic compound is heated with fuming nitric acid in the presence of :
A
HNO3
B
AgNO3
C
CuSO4
D
BaSO4
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