Q. Formula of Feldspar is

2019 248 General Principles and Processes of Isolation of Elements Report Error

A

$K_{2} O - A l_{2} O_{3} 6 S i O_{2}$

B

$K_{2}O_{3} Al_{2)O_{3}. 2H_{2}O$

C

$A l_{2} O_{3} .2 S i O_{2} .2 H_{2} O$

D

$3 M g O .4 S i O_{2} . H_{2} O$

Solution:

Feldspar is $K_{2} O . A l_{2} O_{3} .6 S i O_{2}$