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MODERN PUBLICATION-GROUP 15 ELEMENTS-EXERCISE
- Liquid ammonia bottles be opened after cooling them in ice for sometim...
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- The lightning bolts in atmosphere cause the formation of:
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- The most reactive allotropic form of phosphorus is:
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- Which hydride possesses the maximum complex forming nature ?
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- The formula of zinc phosphite is:
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- NH3 molecule can enter into complex formation through:
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- Calcium carbide when heated with nitrogen forms:
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- Which property of white phosphorus is common to red P ?
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- Which hydride Is most stable ?
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- Which is a poison ?
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- NH4Cl is used to clean metal surfaces because:
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- In smoke screens calcium phosphide is used, because it:
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- Ammonia on heating with carbon dioxide under pressure gives:
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- Dilute HNO3 reacts with limestone to yield:
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- CaN pellets are coated with calcium silicate because:
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- Basic oxide is:
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- Fluorapatite is a mineral of:
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- Which of the following is correct, with the reference to Protonic acid...
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- The single electron in 2p-orbitals of nitrogen atom proves:
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- Vortex rings in air are formed by:
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