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Question

Which of the following is used for making optical
instruments :
$S i O_{2}$
Si
$S i H_{4}$
SiC

A

S i H_{4}

B

SiC

C

Si

D

S i O_{2}

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Solution

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Silica is an important ingredient in making glass, which is extensively used in making optical devices.

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Similar Questions

Q1

Which of the following is used for making optical
instruments :

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Q2

What is the co-efficient of

S i C

when the equation

S i O_{2}

+

C

\to

S i C

+

C O

is balanced and reduced to its lowest term?

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Q3

Si of high purity to be used in semiconductor can be prepared by following methods :

I. $S i O_{2} + 2 C \to S i + 2 C O$

II. $S i + 2 C l_{2} \to S i C l_{4}$

$S i C l_{4} + 2 M g \to S i + 2 M g C l_{2}$

Better method is :

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Q4

S i + C \to

SiC. This chemical reaction is an example for:

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Q5

Compele the following reactions:
(i)

S i O_{2} + 2 N a O H \to X + H_{2} O

(ii)

S i O_{2} + 4 H F \to Y + 2 H_{2} O

(iii)

S i + 2 C H_{3} C l C u p o w d e r - ------ \to 570 K Z

?

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