MCQ
Which of the following is used for making optical instruments:
  • $\ce{SiO_2}$​
  • B
    $Si$
  • C
    $\ce{SiH_4}$​
  • D
    $\ce{SiC}$

Answer

Correct option: A.
$\ce{SiO_2}$​
Silica is an important ingredient in making glass, which is extensively used in making optical devices.

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