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MBD PUBLICATION-SOME P-BLOCK ELEMENTS-QUESTION BANK
- Graphite marks paper, because
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- Why graphite is soft and slippery in nature ?
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- Why graphite conducts electricity ?
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- Is diamond an element or compound ?
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- Carbon monoxide is oxide, while other monoxide of Group IVA elements ...
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- What is dry ice ?
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- Why is solid CO2 is called dry ice ?
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- Why CO2 is a gas, but SiO2 is a solid ?
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- Why C Cl4 cannot be hydrolysed ?
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- Which is the anhydride of carbonic acid ?
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- What are silicones ?
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- What happens when borax is heated ?
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- What happens when orthoboric acid is heated ?
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- The aqueous solution of aluminium chloride is acidic due to :
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- Name two uses of borax.
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- What is alum? Give its composition.
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- How can you prepare orthoboric acid ?
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- How alum is prepared ? Give equation.
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- What is the composition of cryolite ? Why is it used in the extraction...
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- What happens when aluminium hydroxide is treated with sodium hydroxide...
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