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Standard XII

Chemistry

Silica

What is the c...

Question

What is the chief constituent of Pyrex glass ?

B_{2} O_{3}

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S i O_{2}

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A l_{2} O_{3}

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N a O_{2}

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Solution

The correct option is A $S i O_{2}$
Pyrex glass is obtained by fusing toghether 60 to 80% $S i O_{2}$ , 10 to 25 % $B_{2} O_{3}$ and remaining amount of $A l_{2} O_{3}$ .

$S i O_{2}$ is the chief constituent of Pyrex glass.

Hence, the correct answer is option $B$ .

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Similar questions

Q. An analysis of pyrex glass showed 12.9%

B_{2} O_{3}

, 2.2%

A l_{2} O_{3}

, 3.8%

N a_{2} O

, 0.4%

K_{2} O

and remaining is

S i O_{2}

. What is the ratio of silicon to boron atoms in the glass?

Q. An analysis of Pyrex glass showed the presence of 12.9% of

B_{2} O_{3}

, 2.2% of

A l_{2} O_{3}

, 3.8% of

N a_{2} O

, 0.4% of

K_{2} O

and the remaining was

S i O_{2}

. What is the ratio of silicon to boron atoms in the glass?

The constituents used in the manufacturing of different types of glasses are given below.

Silica( ${SiO}_{2}$ ), Sodium Carbonate ( ${Na}_{2} {CO}_{3}$ ), Calcium Carbonate ( ${CaCO}_{3}$ ), Potassium Carbonate( $K_{2} {CO}_{3}$ ), Boron Oxide ( $B_{2} O_{3}$ ), Alumina ( ${Al}_{2} O_{3}$ ) and Lead Oxide ( $PbO$ )

Choose the option/s that correctly matches the constituents and its use.

Q. An analysis of Pyrex glass showed the presence of 12.9% of

B_{2} O_{3}

, 2.2% of

A l_{2} O_{3}

, 3.8% of

N a_{2} O

, 0.4% of

K_{2} O

and the remaining was

S i O_{2}

. What is the ratio of silicon to boron atoms in the glass?

Q. Among

A l_{2} O_{3}, S i O_{2}, P_{2} O_{3}, S O_{2}

the correct order of acid strength is

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What is the chief constituent of Pyrex glass ?

The correct option is A SiO2Pyrex glass is obtained by fusing toghether 60 to 80% SiO2, 10 to 25 % B2O3 and remaining amount of Al2O3.SiO2 is the chief constituent of Pyrex glass.Hence, the correct answer is option B.

The correct option is A $S i O_{2}$
Pyrex glass is obtained by fusing toghether 60 to 80% $S i O_{2}$ , 10 to 25 % $B_{2} O_{3}$ and remaining amount of $A l_{2} O_{3}$ .

$S i O_{2}$ is the chief constituent of Pyrex glass.

Hence, the correct answer is option $B$ .