Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) General Single Correct MCQ
Published on: August 13, 2026

As Rhombic sulphur is heated in a test tube :

Process

Temperature

(a)

Viscosity increases

T1

(b)

Viscosity decreases

T2

(c)

Paramagnetic molecules

T3

(d)

Breakage of S8 rings

T4

(Diradical formation in molten phase)

Correct order of temperature is :

A
T 1 < T 3 < T 4 < T 2
B
T 2 < T 4 < T 3 < T 1
C
T 4 < T 1 < T 2 < T 3
D
T 3 < T 4 < T 1 < T 2

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Text Solution

Verified by Experts
The correct answer is:
C

When sulphur is heated, firstly S 8 rings break, diradicals are formed, polymerisation takes place. On further T viscosity increase and then viscosity decrease at very high temperature (~ 600ºC) rings are formed and in vapour phase S 2 (paramagnetic) molecules are present.

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