Q48 / 170 · Manipal (MET) 2021 · Chemistry

When sodium hydroxide react with sand, it form :

  • Correct answer
    A
    sodium silicate
  • B
    silicon oxide
  • C
    silicon hydroxide
  • D
    none of the above

Solution

NaOH when react with sand $\mathrm{SiO}_2$, it forms sod. silicate which is generally called glass. $2 \mathrm{NaOH}+\mathrm{SiO}_2 \longrightarrow \underset{\text { Sod. silicate (glass) }}{\mathrm{Na}_2 \mathrm{SiO}_3}+\mathrm{H}_2 \mathrm{O}$

Hence, the correct answer is option: 'A'.

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