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JEE Main levelSingle correct optionDifficulty 2 of 3pb154

Ordinary soda-lime glass is made by fusing

Asand, borax and bauxite
Bsand, coke and lime only
Cquartz, cryolite and soda
Dsand, sodium carbonate and limestone

Answer: D

Fusing

SiO X_{2}

with

Na X_{2} CO X_{3}

and

CaCO X_{3}

gives sodium and calcium silicates of approximate composition

Na X_{2} O \cdot CaO \cdot 6 SiO X_{2}

.

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