The p-Block Elements Test

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The p-Block Elements Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

Elements having +5 oxidation state is

A
Arsenic

B
Antimony

C
Bismuth

D
Phosphorous

Solution

Explanation:

P:[Ne]3s²3p³. Total valence e=5 so it will show +5 oxidation state.
Question 2
1 / -0

[Ar] 3d¹⁰4s²4p³is the electronic configuration of

A
Phosphorous

B
Antimony

C
Arsenic

D
Bismuth

Solution

Explanation:

Arsenic has atomic no. 33.
Question 3
1 / -0

The most abundant oxidation states of nitrogen are

A
+3, +5

B
– 3, +5

C
– 3, +3

D
– 3, +3, +5

Solution

Explanation:

N show -3 in NH₃ and +3 in HNO₂and +5 in HNO₃.
Question 4
1 / -0

Which among the following compound, nitrogen shows the oxidation state of +5?

A
HNO₃

B
N₂

C
NH₂OH

D
NH₃

Solution

Explanation:

N has +5 in HNO₃. Oxidation state of O is -2 and H is +1.
Question 5
1 / -0

The maximum covalency of nitrogen is

A
Four

B
Six

C
Eight

D
Five

Solution

Explanation:

N has maximum covalency of 4. Max covalency = No. of orbitals in valence shell.
Question 6
1 / -0

Which among the following forms basic oxide?

A
Nitrogen

B
Phosphorous

C
Bismuth

D
Antimony

Solution

Explanation:

As we move down the group metallic character increases so Bi is a metal thus its oxide is basic.
Question 7
1 / -0

Ammonia has a higher boiling point and is less volatile because of

A
Covalent bond

B
Vander waal forces

C
Hydrogen bond

D
Dipole – Dipole interaction

Solution

Explanation:

NH₃ undergo intermolecular hydrogen bonding and therefore it has higher boiling point compared to other hydrides of group 15.
Question 8
1 / -0

Which compound is used in the preparation of caprolactam?

A
Nitric acid

B
Ammonia

C
Phosphine

D
Phosphorous halide

Solution

Explanation:

NH₃ is used in preparation of caprolactum.
Question 9
1 / -0

Which compound is used as the cooling liquid in refrigerators?

A
Ozone

B
Ammonia

C
Phosphine

D
Nitrous oxide

Solution

Explanation:

NH₃ is used as cooling liquid in refrigerators

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The p-Block Elements Test - 1

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Question 1

Arsenic

Antimony

Bismuth

Phosphorous

Solution

Question 2

Phosphorous

Antimony

Arsenic

Bismuth

Solution

Question 3

+3, +5

– 3, +5

– 3, +3

– 3, +3, +5

Solution

Question 4

HNO3

N2

NH2OH

NH3

Solution

Question 5

Four

Six

Eight

Five

Solution

Question 6

Nitrogen

Phosphorous

Bismuth

Antimony

Solution

Question 7

Covalent bond

Vander waal forces

Hydrogen bond

Dipole – Dipole interaction

Solution

Question 8

Nitric acid

Ammonia

Phosphine

Phosphorous halide

Solution

Question 9

Ozone

Ammonia

Phosphine

Nitrous oxide

Solution

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HNO₃

N₂

NH₂OH

NH₃