When a mixture of sand, borax, alumina, soda and potassium carbonate are heated and melted, 'Borosilicate glass' is formed. This glass has the special property of being:

resistant to heat

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very transparent

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tough

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unbreakable

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Solution

The correct option is A resistant to heat
Borosilicate glasses are known for having very low coefficients of thermal expansion $(\approx 3 \times 10^{- 6} K^{- 1} at 20 ℃)$ , making them resistant to heat.

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Similar questions

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. Glass is a transparent substance obtained by heating white sand with metal oxides or carbonates. It is a mixture of:

Q. Borax glass is a mixture of :

Q. State the uses of the following glasses.
(a) Borosilicate glass
(b) Lead glass

Q. A piece of glass is heated to a high temperature and then allowed to cool. If it cracks, a probable reason for this is the following property of glass :

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When a mixture of sand, borax, alumina, soda and potassium carbonate are heated and melted, 'Borosilicate glass' is formed. This glass has the special property of being:

The correct option is A resistant to heatBorosilicate glasses are known for having very low coefficients of thermal expansion (≈3×10−6K−1 at 20℃), making them resistant to heat.

The correct option is A resistant to heat
Borosilicate glasses are known for having very low coefficients of thermal expansion $(\approx 3 \times 10^{- 6} K^{- 1} at 20 ℃)$ , making them resistant to heat.