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MODERN PUBLICATION-GROUP 15 ELEMENTS-EXERCISE
- 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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- NaOH can absorb:
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- Which sulphide is insoluble in yellow ammonium sulphide ?
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- Which statement is not correct ?
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- Name the catalyst used in the manufacture of nitric acid by Ostwald pr...
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- Anhydride of nitric acid isand anhydride of phosphoric acid is.
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- which gas collected over water?
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- HNH bond angle in NH3 is.
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- HMH bond angles in MH3 molecules of group 15down the group.
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- In general, two types of oxy-acids formed by elements of nitrogen fami...
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- Nitrogen cannot form NCl5 due to.
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- Bismuth cannot form stable BiCl5, due to.
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- Pentoxides of all the elements of nitrogen family are acidic than th...
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- In the synthesis of NH3 by Haber's process, catalyst is and promoter i...
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