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Alum helps in purifying water by...

Alum helps in purifying water by

A

forming Si complex with clay particles

B

Sulphate part which combines with the dirt and removes it

C

aluminium which coagulates the mud particles

D

making mud water soluble

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The correct Answer is:
C
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MARVEL PUBLICATION-SURFACE CHEMISTRY-MULTIPLE CHOICE QUESTIONS - HIGHER LEVEL
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  2. Which one of the following is correctly matched?

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  3. Alum helps in purifying water by

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  4. In the case of auto catalysis

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  5. Which of the following statement about the catalyst is/are true?

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  6. In Zeigler-Natta polymerisation of ethylene, the active species is

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  7. Which of the following is less than zero during adsorption?

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  8. Adsorption is the tendency of accumulation of molecular species at the...

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  9. Adsorption is accompanied by the evolution of heat. Thus, according to...

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  10. At low pressure, the fraction of the surface covered follows

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  11. At high pressure, the entire surface gets covered by a monomolecular l...

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  12. Which of the following statements is incorrect?

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  13. During adsorption

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  14. which of the following statements is not correct ?

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  15. The isoelectric point of a colloidally dispersed material is the pH va...

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  16. peptization involves :

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  17. Which of the following is not the property of hydrophilic solutions ?

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  18. Which one of the following characteristics is not correct for physical...

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  19. The dispersed phase in colloidal iron (III) hydroxide and collodial go...

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  20. Gold numbers of protective colloids A, B, C and D are 0.50, 0.01, 0.10...

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