P - Block Elements Test

Result

P - Block Elements Test - 24

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Weekly Quiz Competition

Question 1
4 / -1

The strongest base is

A
NH₃

B
PH₃

C
AsH₃

D
SbH₃
Question 2
4 / -1

When AgNO₃ is heated strongly, the products formed are

A
NO and NO₂

B
NO₂ and O₂

C
NO₂ and N₂O

D
NO and O₂
Question 3
4 / -1

Which one of the following is not the characteristic property of carbon ?

A
It exhibits catenation

B
It forms compounds with multiple bonds

C
Its melting point and boiling point are exceptionally high

D
It shows semi-metallic character
Question 4
4 / -1

Nitric acid on standing develops brownish colour which may be attributed to the presence of

A

B

C
NO₂

D
HNO₂

Solution
Question 5
4 / -1

Ozone is not

A
An allotrope

B
A powerful oxidising agent

C
Paramagnetic

D
A bent molecule
Question 6
4 / -1

Pure nitrogen is prepared in the laboratory by heating a mixture of

A
NH₄OH + NaCl

B
NH₄NO₃ + NaCl

C
NH₄Cl + NaOH

D
NH₄Cl + NaNO₂

Solution
Question 7
4 / -1

Which statement is not correct for nitrogen ?

A
It has a small size

B
It does not readily react with O₂

C
It is a typical non-metal

D
d-Orbitals are available for bonding
Question 8
4 / -1

Nitrogen is liberated by the thermal decomposition of only

A
NH₄NO₂

B
NaN₃

C
(NH₄)₂Cr₂O₇

D
All the three

Solution
Question 9
4 / -1

Aqueous solution of ammonia consists of

A
H⁺

B
OH^-

C

D

Solution
Question 10
4 / -1

Which of the following oxides of nitrogen is the anhydride of nitrous acid ?

A
NO

B
N₂O₃

C
N₂O₄

D
N₂O₅

Solution