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The process by which alum purifies turbi...

The process by which alum purifies turbid water is

A

absoption

B

adsorption

C

coagulation

D

disper-sion

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UNITED BOOK HOUSE-HIGHER SECONDARY EXAMINATION 2017-EXERCISE
  1. A compound X is used as an antiseptic in 0.2% solution and as a disinf...

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  2. Which of the following exists as covalent crystals in the solid state-

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  3. The process by which alum purifies turbid water is

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  4. Which one of the following atomic numbers is that of a lanthanoid elem...

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  5. Which of the following compounds most readily undergoes solvolysis by ...

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  6. In the solid state which of the following is the structure of alanine?

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  7. Which of the following is not a food preservative?

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  8. Mark the hydrophobic and hydrophilic parts of the following syn-thetic...

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  9. Atoms of which two elements among the following are of same size ? Zr,...

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  10. What would be the value of paramagnetic spin moment of K3[Fe(CN)6]? (A...

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  11. For which phenomenon colloidal particles do not settle down?

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  12. It 193000 coulomb of electricity is passed through a metallic wire, ho...

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  13. Write the appropriate Nernst equation for the following half-cell reac...

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  14. Write down the van't Hoff equation for osmotic pressure of a solution....

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  15. When urea is added to water the freezing point decreases. Explain why.

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  16. A U-tube is completely filled with Fe(OH)3 sol and a potential differe...

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  17. Define heterogeneous catalysis with an example.

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  18. How will you distinguish chemically between HN3 and HN3 ?

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  19. Writ down the balanced chemcial equation for the reaction of H2S with ...

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  20. Explain why Cu(NH(3))4]^(2+) ion is coloured but [Cu(CN)4]^(3-) ion is...

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