Computer · Building Materials
साधारण पोर्टलैंड सीमेंट (OPC) का मानक विशिष्ट गुरुत्व (specific gravity) क्या होता है?
- 13.17
- 23.00
- 33.10
- 43.15✓
सही उत्तर देखें
3.15
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