Computer · Building Materials
निम्नलिखित में से किसे चूने (lime) के साथ मिलाने पर काला सीमेंट या कृत्रिम हाइड्रोलिक चूना प्राप्त होता है?
- 1सिलिका फ्यूम (Silica fume)
- 2सुर्खी (Surkhi)
- 3फ्लाई ऐश (Fly ash)
- 4धान की भूसी की राख (Rice husk ash)✓
सही उत्तर देखें
धान की भूसी की राख (Rice husk ash)
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