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NARAYNA-15TH GROUP ELEMENTS-Level-I (C.W)
- P(4)O(10) is the anhydride of the following
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- The element which gives explosive halides is
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- Which of the following is most stable
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- Which of the following is not correct ?
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- An element X belongs I,II,III or V groups. Its oxide reacts with water...
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- The anhydride of orthophophoric acid is
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- The oxyacid of phosphorous which exists as a dimer in vapour phase is
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- Salt of the following is used as a water sofner
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- Basicity of orthophosphoric acid is
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- Which of the following is an acidic salt –
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- Ammonia and air are the starting materials for the manufacture of Nitr...
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- Moles of oxygeb that can oxidise one mole of NH(3) to NO
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- Percentage of nitric acid obtained in Ostwald's process is
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- Which does not give ammonia with water
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- A mixure of ammonia and air at about 800^(@)C in the presence of Pt ga...
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- Aqueous NaOH reacts with white Phosphorous to form Phosphine and
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- Superphosphate is a mixture of
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- Superphosphate of lime is obtained by treating
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