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Standard XII
Chemistry
Introduction to p Block Elements
Question
Colemanite is
N
a
2
B
4
O
7
⋅
10
H
2
O
C
a
2
B
6
O
11
⋅
5
H
2
O
N
a
B
O
2
H
3
B
O
3
A
N
a
2
B
4
O
7
⋅
10
H
2
O
B
N
a
B
O
2
C
H
3
B
O
3
D
C
a
2
B
6
O
11
⋅
5
H
2
O
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Solution
Verified by Toppr
Colemanite, an ore of boron is
C
a
2
B
6
O
11
⋅
5
H
2
O
is a borate mineral found in evaporite deposits of alkaline lacustrine environments.
Colemanite is a secondary mineral that forms by alteration of borax and ulexite.
Hence, option B is correct.
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