Home
Class 12
CHEMISTRY
On addiction of 1ml solution of 10% NaCl...

On addiction of 1ml solution of 10% NaCl to 10ml gold sol in the presence of 0.0250gm mof starch, the coagulation is just prevented Starch has the following gold number

A

0.25

B

0.025

C

2.5

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • SURFACE CHEMISTRY

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

  • SURFACE CHEMISTRY

    AAKASH SERIES|Exercise Objective Excersice - 4 (ASSERTION (A)& REASON (R ) TYPE QUESTION)|34 Videos

  • SURFACE CHEMISTRY

    AAKASH SERIES|Exercise Objective Excersice - 1|110 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

The coagulation of 100ml gold sol is completely prevented by adding 0.25g of starch to it before adding 10ml of 10% NaCl solution. Calculate the gold number of starch.

The coagulation of 100 ml gold sol is completely prevented by adding 0.25 g of starch to it before adding 10 ml of 10% NaCl solution. Calculate the gold number of starch.

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. 0.025g of starch sol is required to prevent coagulation of 10ml gold sol when ImL of 10% Nacl solution is present. What is gold number of starch sol

One gram of a protective colloid 'X' is to be added to 200ml of gold sol to prevent coagulation of it when 20 ml of 10% NaCl is added. Calculate the gold number of protective colloid 'X'.

300 mL of gold sol is mixed with 30 mL of 10% NaCl solution. The mass of haemoglobin in mg required to protect the gold sol from coagulation is (gold number of haemoglobin is 0.03)

When 1.0 xx 10^(-5) mg of a protective colloid is added to 20 ml of standard gold sol, the precipitation of gold sol was prevented by adding 5 ml of 10% solution of NaCl. If the gold number of protective colloid is 2.0 x 10^(-x) mg then x is = __?

Exactly 8mg of a lyophilic 'sol' is added to 20ml of a gold sol to protect against addition of 2ml of 20% NaCl. What is the gold number of the given sol?

AAKASH SERIES-SURFACE CHEMISTRY-Objective Excersice - 2
  1. As the size of gold particle increases the colour of solution varies a...

    Text Solution

    |

  2. Which one of the following forms a negativity charged sol?

    Text Solution

    |

  3. The order of coagulating power of PO(4)^(3-), SO(4)^(2-) and Cl^(-) in...

    Text Solution

    |

  4. Which of the following is correct about lyophillic sol ?

    Text Solution

    |

  5. Peptization denots

    Text Solution

    |

  6. The migration of colloidal solute particles in a colloidal solution, w...

    Text Solution

    |

  7. Blue colour of the sky is due to

    Text Solution

    |

  8. The order of coagulating power of PO(4)^(3-), SO(4)^(2-) and Cl^(-) in...

    Text Solution

    |

  9. On adding AgNO(3) solution to KI solution, a negatively charged colloi...

    Text Solution

    |

  10. On addiction of 1ml solution of 10% NaCl to 10ml gold sol in the prese...

    Text Solution

    |

  11. Hardy - Schulz rules are based on of electrolyte ions coagulating the...

    Text Solution

    |

  12. Which of the following is a kinetic property of sols ?

    Text Solution

    |

  13. Brownian movement is mainly is due to

    Text Solution

    |

  14. Which of the following is a non electrolytic colloidal sol

    Text Solution

    |

  15. Sodium stearate forms associated colloids

    Text Solution

    |

  16. Gold number of a lyophilic solution is such property that

    Text Solution

    |

  17. Ferric chloride on rubbing to a bleeding wound causes

    Text Solution

    |

  18. An example of a positively of a positively charged sol is

    Text Solution

    |

  19. When the purc solvent diffuses out of the solution through the semi-pe...

    Text Solution

    |

  20. If the gold number of potato starch is 25, how many grams of it is req...

    Text Solution

    |