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MODERN PUBLICATION-p-BLOCK ELEMENTS-EXERCISE
- Why is helium used in diving apparatus?
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- Give the structure and basicity of H3PO4.
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- Why conc. sulphuric acid is always diluted by adding sulphuric acid to...
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- Fill in the blanks- is an important food nutrient which provide insta...
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- Name the Scientist who prepared the first compound of noble gases.
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- Answer the question with brief explanation- Plants perform which proce...
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- Define the following term- Ammonal?
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- Why does concentrated sulphuric acid has high boiling point?
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- Fluorine exhibits only - 1 oxidation state whereas other halogens exhi...
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- Molecular nitrogen N2 is not particularly reactive. Explain
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- How does O3 react with PbS. Give chemical reaction.
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- Why noble gases are inert or inactive ?
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- what is the contact process for the manufacture of sulphuric acid.
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- Define the following term- Brass?
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- Define the following term- Bronze?
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- What happens when ammonia reacts with Na.
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- What happens when ammonia reacts with CO2.
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- Account for the following : NH3 is a stronger base than PH3.
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- How would you account for the following : Sulphur has a great tendency...
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- Account for the following : Bond energy of F2 is less than Cl2.
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