पर्यावरण रसायन विज्ञान प्रश्न 12
प्रश्न: निम्नलिखित में से कौन-सा एक पोर्टलैंड सीमेंट में नहीं पाया जाता है?
विकल्प:
A) $ Ca _3Al _3O _6 $
B) $ Ca _3SiO _5 $
C) $ Ca _2SiO _4 $
D) $ Ca _3{{(PO _4)}_2} $
Show Answer
उत्तर:
सही उत्तर: D
BETA
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