General Studies · Workshop Practice
निम्नलिखित में से कौन सा मार्किंग मीडिया सूखने में अधिक समय लेता है?
- 1सेल्युलोज लैकर
- 2कॉपर सल्फेट
- 3प्रशियाई नीला (Prussian blue)✓
- 4चाक पाउडर
सही उत्तर देखें
प्रशियाई नीला (Prussian blue)
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