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Why HF cannot be stored in glass bottle ...

Why HF cannot be stored in glass bottle ?

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USHA PUBLICATION-PREVIOUS YEAR QUESTION 2016-PREVIOUS YEAR QUESTION
  1. How is toluene converted to benzene ?

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  2. What is Cannizzaro's reaction? Give equation.

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  3. Why HF cannot be stored in glass bottle ?

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  4. How is ferric chloride prepared ? Explain why it is acidic.

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  5. Why hydrogen sulphide cannot be dried by conc. H2SO4?

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  6. Represent the cell and calculate the Standard e.m.f. of the cell havin...

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  7. The aqueous solution of which amongst the following is the most acidic...

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  8. State the Law of mass action and explain any two significance of equil...

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  9. How does common ion effect help in the preparation of pure NaCl from a...

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  10. "Direct iodination of benzene is difficult." Explain. Suggest an alter...

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  11. Write the structural formulae of the three derivatives of monocarboxyl...

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  12. Equivalent conductance at infinite dilution of NH4CI, NaOH and NaCl ar...

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  13. What is a Buffer solution? Derive Hendersen's equation for calculation...

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  14. The half-life of a radioactive element is 69.3 days. Find out the time...

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  15. The half - life of a radioactive element is 69.3 days.Find out the tim...

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  16. What is Diazo reaction ? Write the structure of the product of this re...

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  17. How is acetaldehyde prepared from acetylchloride?

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  18. How does acetaldehyde react with Tollen's reagent

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  19. How does acetaldehyde react with Phenyl hydrazine ?

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  20. Arrange the order of reactivity of the following compounds towards nuc...

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