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MBD PUBLICATION-p-BLOCK ELEMENTS-QUESTION BANK
- Which element is most metallic:
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- Aqua-regia is a mixture of:
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- Arsine is a:
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- P2O5 is used extensively as a:
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- The non-existent compound is:
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- In pyrophosphoric acid the number of hydroxy groups present are:
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- Concentrated nitric acid on heating decomposes to give:
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- Phosphoric acid on reaction with sufficient quantity of NaOH gives:
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- Which one of the following cations does not form a complex with ammoni...
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- Which pentafluorides cannot be formed ?
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- Which possesses least stable covalent P-H bond ?
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- Paramagnetic oxide is:
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- The oxide of nitrogen which reacts with NaOH solution giving both sodi...
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- The oxidizing property of nitric acid is due to:
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- Which chloride is explosive:
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- N2O4 molecule is completely changed into 2NO2 molecules at:
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- The chemical formula for tartar emetic is:
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- Which reacts rapidly with oxygen in the air at ordinary temperature :
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- Phosphine is not evolved when:
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- The number of molecules of water needed to convert one molecule of P2O...
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