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11th CBSE
IMPORTANT
Earn 100

The brown ring test for nitrates depends upon

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Important Questions on p-Block Elements (Nitrogen Family)

HARD
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - p-Block Elements (Nitrogen Family)>Competition Focus>Q 34
The oxidation number of Fe in brown ring [Fe(H2O)5NO]2+ is
HARD
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - p-Block Elements (Nitrogen Family)>Competition Focus>Q 35
[Fe(H2O)5NO]2+ is a complex formed during the brown ring test for NO3- ion. In this complex-
HARD
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - p-Block Elements (Nitrogen Family)>Competition Focus>Q 36

Of the following acids, the one which has the capability to form complex compound and also possesses oxidising and reducing properties is-

 

MEDIUM
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - p-Block Elements (Nitrogen Family)>Competition Focus>Q 37
Maximum number of covalent bonds formed by N and P are-
HARD
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - p-Block Elements (Nitrogen Family)>Competition Focus>Q 38
The percentage of π‐character in the orbitals forming P-P bonds in P4 is-
HARD
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - p-Block Elements (Nitrogen Family)>Competition Focus>Q 39
Which of the following forms vortex rings?
HARD
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - p-Block Elements (Nitrogen Family)>Competition Focus>Q 40
The reaction of white phosphorous with aqueous NaOH gives phosphine along with another compound. The reaction type ; the oxidation states of phosphorous in phosphine and the other product are respectively-
HARD
11th CBSE
IMPORTANT
Pradeep's New Course CHEMISTRY Vol.II>Chapter 11 - p-Block Elements (Nitrogen Family)>Competition Focus>Q 41
The reaction of P4 with X leads selectively to P4O6. The X is