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MBD PUBLICATION-p-BLOCK ELEMENTS-QUESTION BANK
- The colourless gas liberated by passing excess of chlorine through NH3...
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- Good conductor of electricity is:
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- Sulphuric acid reacts with PCl5 to yield.
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- Nitric acid is absorbed by:
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- The gas used in the manufacture of icecream is:
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- Phosphine is not collected in air because:
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- The total number of unpaired electrons present in phosphorus in ground...
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- Phosphine is:
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- Ammonium chloride is removed from its mixture by:
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- Calculate the entropy change involved in the conversion of one mole of...
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- The arrangement of oxygen atoms around phosphorus atoms in P4O10 is:
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- Which is not an acid salt ?
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- Red phosphorus is chemically unreactive because:
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- When Zn reacts with very dilute nitric acid it produces:
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- The percentage of nitrogen in air remains almost constant due to:
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- Phosphine is generally prepared in the laboratory:
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- Ammonium dichromate is used in some fireworks. The green coloured powd...
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- P2O5 when treated with cold water gives:
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- Which acid possesses oxidizing, reducing and complex forming propertie...
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- White phosphorus is:
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