Si of high purity to be used in semiconductor can be prepared by following methods -I- SiO2 - 2C - Si - 2COII- Si - 2Cl2 - SiCl4 SiCl4 - 2Mg - Si - 2MgCl2Better method is -

The correct option is A IISi of nbsp; high purity to be used in semiconductor can be prepared nbsp; by the reaction of Si with chlorine to form SiCl_4 ...

You visited us 6 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Chemistry

Zone Refining

Si of high pu...

Question

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 :

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

both (A) and (B)

No worries! We‘ve got your back. Try BYJU‘S free classes today!

None of these

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A II
Si of high purity to be used in semiconductor can be prepared by the reaction of Si with chlorine to form $S i C l_{4}$ followed by fractional distillation (to purify $S i C l_{4}$ ) and reduction with hydrogen. Zone refining is used for the further purification.
$S i + 2 C l_{2} \to S i C l_{4} (l) 2 H_{2} (g) - --- \to S i (s) + 4 H C l (g) Z o n e r e f i n i n g - ------- \to U l t r a p u r e s i l i c o n$

Suggest Corrections

Similar questions

Q. Assertion :

M g O

is reduced by

S i

whereas

S i O_{2}

can be reduced by

M g

Reason:

S i

reduces

M g O

at high temperature

M g

is more electropositive than

S i

and thus reduces

S i O_{2}

Q. The

S i C l_{4}

molecule is nonpolar and chlorine is more electronegative than silicon. From this information alone it can be deduced that :
(1)

S i - C l

bond is nonpolar
(2)

S i C l_{4}

molecule is planar
(3)

S i C l_{4}

molecule is symmetrical

S i O_{2} + 3 C ⟶ 2 C O +

________

Q. Si

O_{2}

+ 2Mg

h e a t - - \to

___ + ___

S i (s) + 2 C l_{2} (g) \to S i C l_{4} (l)

In one reaction, 0.507 mole of

S i C l_{4}

is produced how many moles of molecular chlorine were used in the reaction?

Join BYJU'S Learning Program

Si of high purity to be used in semiconductor can be prepared by following methods :I. SiO2+2C→Si+2COII. Si+2Cl2→SiCl4SiCl4+2Mg→Si+2MgCl2Better method is :

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 :