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What are the important sources of Phosphorus?
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How many sigma and pi bonds are present in nitrogen formula?
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How much amount of energy is required to break the Triple bond in nitrogen molecule?
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Which is the most reactive element in Nitrogen family?
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Name the family of fifth ‘A’ group elements.
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How do you call fifth, ‘A’ group elements collectively?
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Garnet is the ore of which element. Give its chemical formula.
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Give the formula of Borax. Borax is chemically called as.
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What is Banana bond? Diborane contains how many banana bonds
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How do we prepare Diborane?
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Which Univalent element cannot form Alums and why?
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What are hydrides of boron called?
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What is Thermite mixture?
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What does Ammonal contain? For what purpose it is used.
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Which process is used in welding the gaps in railway tracks?
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What is the process, by which Aluminium is refined?
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Name the elements for which Cryolite and Pelspar are the ores.
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Among third A group elements which element is best conductor?
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In 3rd, name ‘A’ group elements which is the Non metal
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Name the family of third ‘A’ group elements
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