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Byju's Answer

Standard XII

Chemistry

Borax

Na2B4O7. 10 H...

Question

$N a_{2} B_{4} O_{7.} 10 H_{2} O$ is:

Borax

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Solution

The correct option is A Borax
$N a_{2} B_{4} O_{7.} 10 H_{2} O$ is borax..

Option A is correct.

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Similar questions

Q. The % of boron in borax (

N a_{2} B_{4} O_{7} .10 H_{2} O

) is :

[

H = 1, B = 11, O = 16, N a = 23

]

N a_{2} B_{4} O_{7} .10 H_{2} O +

conc.

H_{2} S O_{4} △ ⟶ (A) C H_{3} O H, △ ⟶

(B)
(A) and (B) are

H_{3} B O_{3}

and

(C H_{3})_{3} B O_{3}

respectively.
If true enter 1, if false enter 0.

Q. Match the column I with II and mark the appropriate choice.

Column i Column II
(A) Borax (i) $N a_{3} A l F_{6}$
(B) Inorganic benzene (ii) $N a_{2} B_{4} O_{7} .10 H_{2} O$
(C) Cryolite (iii) $A l_{2} O_{3} .2 H_{2} O$
(D) Bauxite (iv) $B_{3} N_{3} H_{6}$

Q. Titration of a

0.7439

g sample of impure

N a_{2} B_{4} O_{7} .10 H_{2} O

(borax) requires

31.64

mL of

0.108 M H C l

for the reaction. The result of this analysis in terms of percentage is (in nearest integer) :

(Molecular weight of

B = 11

g/mol)

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	Column i		Column II
(A)	Borax	(i)	$N a_{3} A l F_{6}$
(B)	Inorganic benzene	(ii)	$N a_{2} B_{4} O_{7} .10 H_{2} O$
(C)	Cryolite	(iii)	$A l_{2} O_{3} .2 H_{2} O$
(D)	Bauxite	(iv)	$B_{3} N_{3} H_{6}$

Na2B4O7.10H2O is:

The correct option is A BoraxNa2B4O7.10H2O is borax..Option A is correct.

$N a_{2} B_{4} O_{7.} 10 H_{2} O$ is:

The correct option is A Borax
$N a_{2} B_{4} O_{7.} 10 H_{2} O$ is borax..

Option A is correct.