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| ઘટકો | ટકાવારી |
| $1$. $CaO$ | $a$. $2-3\%$ |
| $2$. $MgO$ | $b$. $50-60\%$ |
| $3$. $SiO_2$ | $c$. $5-10\%$ |
| $4$. $Al_2O_3$ | $d$. $20-25\%$ |
| સ્તંભ-$I$ | સ્તંભ-$II$ |
| $a$. $Ra$ | $p$. વિમાન ઉદ્યોગ |
| $b$. $K$ | $q$. ડાઉન સેલ |
| $c$. $Li$ | $r$. ફોટો ઇલેક્ટ્રિક સેલ |
| $d$. $Na$ | $s$. રેડિયોએક્ટિવ |
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