MCQ
Correct match is :
- AOrdinary form of borax $:$ $Na_2B_4O_7 · 5H_2O$
- ✓Colemanite $:$ $Ca_2B_6O_{11}·5H_2O$
- CBoronatrocalcite $:$ $2Mg_3B_8O_{15}·MgCl_2$
- DOctahedral form of borac $:$ $Na_2B_4O_7·10H_2O$
✓
Answer
Correct option: B.
Colemanite $:$ $Ca_2B_6O_{11}·5H_2O$
b
(A) Incorrect. Ordinary form of Borax $= Na _2 B _4 O _7 \cdot 10 H _2 O$
(A) Incorrect. Ordinary form of Borax $= Na _2 B _4 O _7 \cdot 10 H _2 O$
(B) Correct: Colemanite $= Ca _2 B _6 O _{11} \cdot 5 H _2 O$
(c) Incorrect: Bernarocalcite $= CaB _4 O _7 \cdot NaBO _2 \cdot 8 H _2 O$
(D) Correct: Octahedral form of borax $= Na _2\left[ B _4 O _5( OH )_4\right] \cdot 8 H _2 O$
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