WorksheetsP-Block : Group 15 elements
Total questions: 21
Worksheet time: 5hrs 15mins
In group 15 elements the +3 oxidation state's stability_____
Increases down the group
Decreases down the group
Remains same
Is not stable
The maximum Covalency of Nitrogen is
5
2
4
3
Which of the following elements form pπ-dπ bonding
Nitrogen
Boron
Carbon
Phosphorus
Which of the reasons is incorrect in respect to nitrogen's anomalous behaviour?
Small size
Presence of D-orbitals
Low ionization energy
Low electronegativity
Which hydride of pnictogens have the lowest and highest boiling points respectively
PH₃ and NH₃
NH₃ and PH₃
SbH₃ and NH₃
BiH₃ and AsH₃
What will be the major end products of the following reactions:
NH₄Cl + NaNO₂ →
NH₄Cl + Ca(OH)₂ →
Respectively
NH₄ and N₂
N₂ and CaO
NH₃ and NO₂
N₂ and NH₃
Ammonia has a ____ structure
Trigonal pyramidal
Square planar
Linear
Tetrahedral
Ammonia can be prepared by
Contact process
Deacons process
Ostwalds process
Haber process
What is the catalyst used in the the production of ammonia in Habers process
V₂O₅
Pt/Rh gauge catalyst
CuCl₂
FeO
Which of the fact is wrong about ammonia?
Ammonia is insoluble in water
Ammonia acts as a Lewis base
Ammonia has a trigonal pyramidal structure
Ammonia produces white fumes with HCl
Ostwalds process is used in the production of?
HNO₃
NH₃
NO₂
H₂SO₄
In Ostwald's process:
NO₂ + H₂O →
NH₂
NH₄
NO₂
HNO₃
Catalyst used in Ostwalds process is
Homogeneous, CuCl₂
Homogeneous, V₂O₅
Heterogeneous, Pt/Rh gauge catalyst
None of the above
Assertion: HNO₃ imparts a yellow colour.
Reason: HNO₃ has impurities of NO₂
A and R true and R correct explanation
A and R true but R not the correct explanation
A is correct R is wrong
Both wrong statements
Nitric acid is a very strong reducing agent.
True
False
Are you a cutie?
Yessssss
Nope
Abey chal na
*blushing*
Brown ring test is done to detect the presence of
HNO₃⁻
NO₃⁻
NH₃⁺
NO₂⁻
End product of the Brown ring test is
[Fe(H₂O)₂NO]₃⁻
[Fe(H₂O)₅NO]³⁺
[Fe(H₂O)₅NO]²⁺
[Fe(H₂O)₄NO]₂⁺
Pure nitrogen can be obtained by
Heating Barium Azide (Ba₃N₂)
Fractional distilation of liquid air
N₂ + O₂
Heating HNO₃
Elements of group 15 form compounds in +5 oxidation state. However, bismuth forms only one well characterised compound in +5 oxidation state. The compound is ......
Bi₂O₅
BiF₅
BiCl₅i₂S₅
Bi₂S₅
A hydride of nitrogen that is acidic is
NH₃
N₃H
N₂H₂
N₂H₄
