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What is the role of limestone in the ext...

What is the role of limestone in the extraction of iron from red haematite?

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SHARAM PUBLICATION-2020 QUESTION PAPER -EXERCISE
  1. Match the compounds in column I with their functions in Column II corr...

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  2. What happens when a mixture of calcium acetate and calcium formate is ...

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  3. What is the role of limestone in the extraction of iron from red haema...

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  4. 2.75 g of Na2 CO3 is present in 200 ml of Na2CO3 solution. Calculate t...

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  5. What is Rosenmund 's reduction ? Give equation and also write the name...

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  6. Why is electron affinity of chlorine greater than that of fluorine ?

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  7. What is Tyndall effect? What is it due to?

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  8. What happens when ethyl alcohol is heated with excess conc. H2 SO4 at ...

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  9. What happens when SO2gas is passed through lime water first slowly and...

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  10. If at 25^@C, the standard emf of the cell |Zn(s)| Zn^2+ (1M) || Cu^2(0...

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  11. What are ionization and linkage isomerism? Give one example of each.

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  12. Benzoic acid on treatment with Br2 and FeBr3 gives the compound (A), w...

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  13. The boiling point of benzene is 353.2 K .When 1.8 g of a non - volatil...

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  14. Discuss the mechanism of SN 2 reaction.

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  15. What are addition and condensation polymerisation? Give one example of...

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  16. Write three differences between physical and chemical adsorption.

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  17. What is lanthanide contraction? Write any two of its consequences.

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  18. Write a note on denaturation of protein.

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  19. Give three differences between crystalline and Amorphous solids.

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  20. What are interhalogen compounds ? Why are these more reactive than hal...

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