First slide

Borax

Question

Kernite is ${Na}_{2} B_{4} O_{7} . {xH}_{2} O$ . $' x'$ is equal to

Easy

A

7
B

5
C

4
D

10

Solution

${Na}_{2} B_{4} O_{7} . 4 H_{2} O (or) {Na}_{2} [B_{4} O_{5} {(OH)}_{4}] . 2 H_{2} O . . . . Kernite$

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