HARD
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Describe the preparation of monoclinic sulphur ?

Important Questions on The p-Block Elements

MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur
On electrolysis of dil. sulphuric acid using Platinum Pt electrode, the product obtained at anode will be
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur
Which of the following is wrong statement?
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur
The catalyst used in the Contact Process is 
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur
Which one of the following is not the use of SO2?
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur
Which state of sulphur exhibits paramagnetism and why?
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur
In resonance hybrid of ozone molecule, O-O bond length is
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur
Nitrogen dioxide and sulphur dioxide have some properties in common. Which property is shown by one of these compounds, but not by the other?
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur

Explain the following property of group 16 elements:

Allotropy

EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur
A mixture of 3g of sulphur and 12.7g of copper was placed in a quartz tube. The tube was sealed under vacuum and then heated to the melting. The cooled tube contains
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur
Name the allotrope of sulphur that is stable at room temperature.
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur
Among the following allotropic forms of sulphur, the number of allotropic forms, which will show paramagnetism is _______.
(A) α-sulphur
(B) β-sulphur
(C) S2-form
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur
The products P and Q of the following reaction, respectively, are a S8( s)+bNaOHaq⟶Paq+qQaq+rH2O
HARD
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur
Explain the formation of O2 molecule by molecular orbital theory.
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur
Which of the following is used as disinfectant?
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur
Identify the incorrect statement :
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur
Molecular formula of oxygen is O2 while sulphur is S8 why?
MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur

Give reason for the following statement :

Sulphur in vapour state shows paramagnetic behaviour.

HARD
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur
Explain the Frasch process for the extraction of sulphur with the help of a labelled diagram.
EASY
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur

Match the following

Column - 1

Type of sulphur

Column - 2

Property
(A) α - Sulphur
(B)S2
(C) β - Sulphur		 (I) soluble in CS2
(II) soluble in H2O
(III) Puckered ring
(IV) Paramagnetic
(V) Chair form

The correct match is:

MEDIUM
Chemistry>Inorganic Chemistry>The p-Block Elements>Allotropes of Sulphur
Given below are two statements:

Statement I : α and β forms of sulphur can change reversibly between themselves with slow heating or slow cooling.

Statement II : At room temperature the stable crystalline form of sulphur is monoclinic sulphur.

In the light of the above statements, choose the correct answer from the options given below: