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Why alum is used in small cut during sha...

Why alum is used in small cut during shaving?

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UNITED BOOK HOUSE-MODEL PAPER 14-EXERCISE
  1. Why the boiling point of salt water is higher than pure water?

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  2. State the conditions for ideal solution.

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  3. Why alum is used in small cut during shaving?

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  4. Write two differeneces between physisorption and chemisorption.

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  5. Give an example of reducing nature of SO2.

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  6. Why phosphine shows reducing nature instead of oxiclising nature?

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  7. [Ni(CO)4] is tetrahedral but diamgagnetic why?

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  8. State the structure and name of monomer unit of natural rubber.

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  9. What is the packing efficiency of bcc lattice? If the diagonal of bcc ...

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  10. A metal forms a face centgred cubic lattice. If the radius of the atom...

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  11. 34.2 gm Sucrose (Molecular wt 342) is dissolved in 1000 gm of water. F...

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  12. Find the osmotic pressure of a solution at 27^@C when 10 gm Glucose an...

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  13. Calculate the EMF of the electrochemical cell for which the following ...

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  14. Calculate the E.M.F. for the cell given below and identify the cathod ...

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  15. Why CuO can be carbon reduced but not CaO? What is gaung?

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  16. Write differences between roasting and calcination. Name a basic flux?

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  17. CuCl2 is blue coloured but CuCl colourless. Explain why? State the gen...

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  18. Name the aldehyde which response in haloform reaction

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  19. How would you chemically differ ethyl chloride and chlorobenzene?

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  20. Give one example :- Carbyl-amine reacion.

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