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Question

Silica dissolves in NaOH solution to form:
  1. carborundum
  2. sodium silicate
  3. quartz
  4. jaspar

A
sodium silicate
B
jaspar
C
quartz
D
carborundum
Solution
Verified by Toppr

Silica is almost non-reactive due to the presence of very strong Si-C bonds. They are unaffected by dihydrogen, halogen and acids except HF and NaOH to form SiF4 and Na2SiO3 respectively. The reaction is as follow:
SiO2+2NaOHNa2SiO3+H2O

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