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MBD PUBLICATION-p-BLOCK ELEMENTS-QUESTION BANK
- Elements O,S,Se and Te are usually known as:
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- The group 16 elements are characterised by the electronic configuratio...
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- Oxygen was discovered by:
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- liberates oxygen from water.
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- The diatomic molecule is of:
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- Which element shows polymorphism ?
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- Which of the following is least acidic ?
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- When oxygen is passed through a solution of Na2SO3 we get:
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- Chemical formula of yellow ammonium sulphide is:
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- Formation of ozonide is:
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- The maximum number of unpaired electrons exists in:
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- Oxygen is paramagnetic. The unpaired electrons are present in:
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- Liquid oxygen is:
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- SO2 is dried by:
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- When SO2 gas is passed through cupric chloride solution:
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- Which loses weight on exposure to the atmosphere ?
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- When water is added in conc. H2SO4 the reaction is exothermic because ...
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- Which does not react with KMnO4 solution ?
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- The element which evolves two gases on reacting with conc.H2SO4 is:
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- H2SO4 has very corrosive action on skin because:
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