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USHA PUBLICATION-P-BLOCK ELEMENTS( GR-15,GR16,GR17,GR18)-EXERCISE
- Chlorine gas is dried over
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- Which of the following is most volatile?
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- Which of the following is the strongest reducing agent?
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- Bond angle is minimum for
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- The acid used in lead storage battery is
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- Which of the following is the strongest acid?
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- Sulphuric acid as used
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- Aerogen is the name given to the elements of-
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- The collective name given to the elements of Gr-16 is-
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- Oxygen and ozone are
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- Tailing of mercury is due to formation of .
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- Which catalyst is used in contact process for manufacture of H2SO4 ?
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- In the reaction HCOOH + (H2SO4) gives H2O + CO sulphuric acid acts as
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- The acid used for etching of glass is
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- In which case Ozone acts as reductant?
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- In the reaction H2S + O3 rarr ……. The products are-
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- Which of the following reacts with liquid NH3 to form a mild explosive...
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- The bond angle inO3 molecule is
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- Which of the noble gases is not present in the atmosphere?
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- Which of the following has the highest bond energy?
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