Home
Class 12
CHEMISTRY
(A) Colloidal sols scatter light while t...

(A) Colloidal sols scatter light while true solutions do not.
(R ) The paricals in the colloidal sol move much slower than that of the true solution

A

Both (A) and (R ) are true and (R ) is the correct explanation of (A)

B

Both (A) and (R ) are true and (R ) is not the correct explanation of (A)

C

(A) is true but (R ) is false

D

Both (A) and (R ) are false

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • SURFACE CHEMISTRY

    AAKASH SERIES|Exercise Objective Excersice - 3 (PREVIOUS NEET/AIPMT QUESTIONS)|12 Videos

  • STOICHIOMETRY

    AAKASH SERIES|Exercise PRACTICE SHEET (ADVANCED) (INTEGER TYPE QUESTION)|2 Videos

  • VA GROUP ELEMENTS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|51 Videos

Similar Questions

Explore conceptually related problems

Give the difference between ' colloidal solutions ' and 'true solutions' .

Which property can be used to distinguish colloidal solutions and true solutions?

What are colloids. Give the differences between 'colloidal solutions' and 'true solutions'.

The scattering of beam of light when light passes through a colloidal solution is………..

Following passage describes charcterstics of colloids. Answer the questions at the end of it. Lyophilic colloidal sols are much more stable than lyophobic colloidal sols. This is due to the extensive solvation of lyophilic colloidal sols, which forms a protective layer outside it and thus prevents it from forming associated colloids. Lyophillic colloidal sols also protect lyophobic colloidal sols from precipition by the action of electrolytes. This is due to formation of a protective layer by lyophilic sols outside lyophobic sols. Lyophilic colloidal sols are called protective sols. Gelatin (lyophilic) protects gold sol (lyophobic) from coagulaion on the addition of sodium chloride solution. Protective powers of different colloidal sols are measured in terms of 'gold number' (Zigmody). It is defined as the amount of protective sol in milligrams that prevents the coagulation of 10 mL of a given gold sol on adding 1 mL of 10 percent sodium chloride. Thus smaller the gold number of a lyophillic sol, the greater is the protective power. Gold number of haemoglobin is 0.03. Hence, 10 mL of gold sol will require haemoglobin so that gold is not coagulated by ImL of 10% NaCl solution

Following passage describes charcterstics of colloids. Answer the questions at the end of it. Lyophilic colloidal sols are much more stable than lyophobic colloidal sols. This is due to the extensive solvation of lyophilic colloidal sols, which forms a protective layer outside it and thus prevents it from forming associated colloids. Lyophillic colloidal sols also protect lyophobic colloidal sols from precipition by the action of electrolytes. This is due to formation of a protective layer by lyophilic sols outside lyophobic sols. Lyophilic colloidal sols are called protective sols. Gelatin (lyophilic) protects gold sol (lyophobic) from coagulaion on the addition of sodium chloride solution. Protective powers of different colloidal sols are measured in terms of 'gold number' (Zigmody). It is defined as the amount of protective sol in milligrams that prevents the coagulation of 10 mL of a given gold sol on adding 1 mL of 10 percent sodium chloride. Thus smaller the gold number of a lyophillic sol, the greater is the protective power. [AgI]I^(-) collodial sol can be coagulated by the addition of a suitable cation. 1 mol of [Agl]I^(-) requires mol of AgNO_3, Pb(NO_3)_2 and Fe(NO_3)_3 as

(A)Colloidal solutions are stable but colloidal particles do not settle down (R ) Brownian movement counters the force of gravity actively on colloidal particles

Can Tyndall effect be used to distinguish between a colloidal solution and a true solution ? Explain.

AAKASH SERIES-SURFACE CHEMISTRY-Objective Excersice - 4 (ASSERTION (A)& REASON (R ) TYPE QUESTION)
  1. (A)A catalyst does not alter the equilibrium constant of a reaction ...

    Text Solution

    |

  2. (A) NH(3) adsorbs more readily over activated charcoal than CO(2) (...

    Text Solution

    |

  3. (A) : Gases between themselves cannot form a colloidal solution. (R)...

    Text Solution

    |

  4. (A) Colloidal sols scatter light while true solutions do not. (R ) ...

    Text Solution

    |

  5. (A) Colloidal particles show Brownian Movement (R ) Brownian movemen...

    Text Solution

    |

  6. (A) A colloidal sol of As(2)S(3) is coagulated faster by 0.1 M BaCl(2)...

    Text Solution

    |

  7. (A)Colloidal solutions are stable but colloidal particles do not sett...

    Text Solution

    |

  8. (A) An emulsion becomes stable if saop is added to it. (R ) Saop c...

    Text Solution

    |

  9. (A) Milk is an example of water in oil emulsions (R ) Emulsions con...

    Text Solution

    |

  10. (A) Urease catalyses the hydrolysis of urea. (R ) All catalysts ar...

    Text Solution

    |

  11. (A) Enzyme catalysed reactions are of first order. (R ) Enzyme ne...

    Text Solution

    |

  12. (A)Adsorption is a surface phenomenon. (R ) During adsortion, residu...

    Text Solution

    |

  13. (A) Conversion of fresh precipitate to colloidal state is called pept...

    Text Solution

    |

  14. (A) Zeolites are good shape-selective catalysts (R ) Zeolites have ...

    Text Solution

    |

  15. (A)Increase in surface area increases rate of evaporaton (R ) Str...

    Text Solution

    |

  16. (A) Substances whose solutions cannot pass through filter paper are ca...

    Text Solution

    |

  17. (A) In chemisorption , adsorption keeps on increasing with temperature...

    Text Solution

    |

  18. (A)Lyophilic colloids are called as reversible sols. (R ) Lyophilic ...

    Text Solution

    |

  19. (A)A colloidal sol of Fe(OH)(3) formed by peptisation carries positive...

    Text Solution

    |

  20. (A) ZSM-5 is used as a catalyst is petrochemical industries . (R ) Z...

    Text Solution

    |