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Which of the following is positively cha...

Which of the following is positively charged colloidal particle ?

A

`As_(2)S_(3)`

B

`Al_(2) O_(3) . xH_(2)O`

C

Au

D

Pt

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The correct Answer is:
B
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AAKASH INSTITUTE-SURFACE CHEMISTRY -Assignment Section - A (Objective type questions)
  1. Colloidal solution commonly used in treatment of eye disseae is :

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  2. Micelles formation takes place

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  3. Which of the following is positively charged colloidal particle ?

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  4. Colloidal can be purified by

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  5. Which of the following has minimum protecting power ?

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  6. Migration of colloidal particles under the influence of electrie field...

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  7. An emulsifier is an agenet which

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  8. Gelatin is often used as an ingredient in the manufacture of ice -crea...

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  9. Milk can be preserved by adding a few drops of

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  10. When a river enters the sea, a delta is formed . Formation of delta is...

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  11. Which statement is incorrect ?

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  12. The potential differnce between the fixed particles layer and the diff...

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  13. When dilute aqueous solution of AgNO3 (excess) is added to KI solution...

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  14. In the preparation of AgI sol, the excess fo AgNO(3) is added to potas...

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  15. Which of the following method is not employed for the purification of ...

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  16. During purification of colloidal sol by ultracentrifugation which of t...

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  17. A positive colloid will be formed when

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  18. Which of the following has the highest and lowest cogulating power? (A...

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  19. Most effective coagulant for a colloidal solution of arsenic sulphide ...

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  20. Flocculation value is expressed in terms of

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