Home Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) General Amorphous boron is extracted from borax by f…
Chemistry S and P - Block Elements (S - Block Elements Not In Syllabus ) General Single Correct MCQ
Published on: August 14, 2026

Amorphous boron is extracted from borax by following step

Borax H 3 BO 3 B 2 O 3 Boron

Then

A
and H 2 SO 4 , Al
B
are : HCl, carbon
C
H 2 SO 4 , Mg
D
HCl, Fe

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Text Solution

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The correct answer is:
C

Na 2 B 4 O 7 + H 2 SO 4 + 5H 2 O Na 2 SO 4 + 4H 3 BO 3

2H 3 BO 3 B 2 O 3 + 3H 2 O

B 2 O 3 + 3Mg 2B + 3MgO

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