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What is Noble Gases (Group 18 Elements / निष्क्रिय गैसें) – Class 12 Chemistry UP Board
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February 10, 2026
What are Actinides Properties (एक्टिनाइड्सकेगुण) – Class 12 Chemistry UP Board
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February 8, 2026
What are Lanthanides (लैंथेनाइड्स) – Class 12 Chemistry UP Board
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February 8, 2026
What is Transition Metals (संक्रमण धातुएँ) – Class 12 Chemistry UP Board
What are d and f Block Elements (d और f ब्लॉक तत्व) – Class 12 Chemistry UP Board
What is Noble Gases (Group 18 Elements / निष्क्रिय गैसें) – Class 12 Chemistry UP Board
What is Halogens (Group 17 Elements / हैलोजन) – Class 12 Chemistry UP Board
What is Oxygen Family (Group 16 Elements / Chalcogens) – Class 12 Chemistry Board
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February 8, 2026
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What is Nitrogen Family (Group 15 Elements) – Class 12 Chemistry UP Board
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February 8, 2026
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What are p-Block Elements (Group 15–18) – Class 12 Chemistry UP Board
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February 8, 2026
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What is Extraction of Metals (धातुओं का निष्कर्षण) – Class 12 Chemistry UP Board
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February 8, 2026
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What is Refining of Metals (धातुओं का शुद्धिकरण) – Class 12 Chemistry UP Board...
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February 8, 2026
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What is Smelting (स्मेल्टिंग) – Class 12 Chemistry UP Board
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February 8, 2026
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What is Roasting (रोस्टिंग) –Class 12 Chemistry UP Board
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February 8, 2026
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What is Concentration of Ore (अयस्क का सांद्रण) –Class 12 Chemistry UP Board
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February 8, 2026
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What are Ores (अयस्क) Class 12 Chemistry UP Board
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February 8, 2026
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What are Visible Rays / Visible Light ( दृश्यमान किरणें / दृश्य प्रकाश )...
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February 6, 2026
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