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USHA PUBLICATION-P-BLOCK ELEMENTS( GR-15,GR16,GR17,GR18)-EXERCISE
- What happens when MnO2 is heated with hydrochloric acid ?
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- Why is OF6 not known?
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- Explain that bleaching action of CL2 is permanent, while that of SO2 i...
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- Which gas is produced when NaCl is heated with conc. H2SO4 ?
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- Arrange the halogens in increasing order of their electron affinity.
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- Name two chalcogens .
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- Name the element of Gr. 16 which has highest cate nation property ?
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- What is Marshall's acid ?
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- Which halogen will produce O2 and O3 on passing through water ?
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- Draw the molecular structure of oleum.
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- Write the anomalous properties of fluorine.
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- Which halogen can not form +ve ion ?
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- Which gas is responsible for absorbing U.V. radiations emitted by sun ...
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- Write all the members of oxygen family.
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- Which among the oxygen family is radioactive?
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- Which halogen exists in liquid state at room temperature ?
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- HI is an oxidising or reducing agent ?
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- Which halogen is radioactive?
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- Which noble gas is called as Lazy gas?
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- Which element directly combines with xenon forming compounds?
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