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Some type of gels like gelatin loose wat...

Some type of gels like gelatin loose water slowly. The process is known as :

A

Syneresos

B

Thixotropy

C

Peptisation

D

imbibition

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To solve the question regarding the process by which some types of gels like gelatin lose water slowly, we will analyze each of the given options step by step. ### Step 1: Understanding the Options We have four options to consider: 1. **Syneresis** 2. **Thixotropy** 3. **Peptization** 4. **Imbibation** ...
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Many lyophilic sols and few lyophobic sols when coagulated under some special conditions changes into semi rigid mass, enclosing whole amount of liquid within of liquid within itself, it is called gel and the process is called gelation. Gelatin, agar-agar, gum-Arabic can be converted into gels by cooling them under moderate concentration conditions. Hydrophobic sols like silicic acid. Al(OH)_(3) are prepared by double decomposition and exchanged of solvent method. Types of gel : 1. Syneresis/weeping of gel : The spontaneous liberation of liquid from a gel is called syneresis or weeping of gels. It is reverse of swelling. e.g., geletin, agar-agar show syneresis at low concentration while silicic shows it at high concentration. 2. Imbibition or swelling of gel : When gel is kept in a suitable liquid (water) it absorb large volume of liquid. The phenomenon is called imbibition or sweeling of gel. 3. Thixotropic : Some gels when shaken to form a sol, on keeping changes into gel are termed as thixotropic gel and phenomenon is called thixotropy. e.g., gelatin and silica liquify on shaking changing into corresponding sol and the sol on keeping changes back into gel. Some types of gels like gelatin and silica liquify on shaking thereby changing into sols. The sols on standing change back into gels. This process is know as :

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Magnesium is a valuable, light weight metal used as a structural material as well as in alloys, batteries, and in chemical synthesis. Although magnesium is plentiful in Earth's crust, it is mainly found in the sea water (after sodium). There is about 1.3 g of magnesium in every kilogram of sea water. The process for obtaining magnesium from sea water employs all three types of reactions, i.e., precipitation, acid-base, and redox-reactions. Acid-base reaction involves reaction between :

Magnesium is a valuable, light weight metal used as a structural material as well as in alloys, batteries, and in chemical synthesis. Although magnesium is plentiful in Earth's crust, it is mainly found in the sea water (after sodium). There is about 1.3 g of magnesium in every kilogram of sea water. The process for obtaining magnesium from sea water employs all three types of reactions, i.e., precipitation, acid-base, and redox-reactions. Redox reaction takes place (in the extraction of Mg) :

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VMC MODULES ENGLISH-SURFACE CHEMISTRY-LEVEL-1
  1. When dilute aqueous solution of AgNO(3) (excess) is added to Kl solu...

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  2. Which of the following electrolytes is most effective in the coagulati...

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  3. The gold numbers of some colloidal solutions are given below: The...

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  4. Lyophilic sols are (a)Irreversible sols (b)Prepared from inorganic...

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

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  6. Pick out the statement which is not relevant in the discussion of coll...

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  7. Peptisation is :

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  8. Which one of the following statements is correct?

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  9. on addition of 1 ml solution of 10% NaCl to 10 ml gold sol in the pres...

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  10. Colloid of which one of the following can be prepared by electrical di...

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  11. In which of the following Tyndall effect is not observed

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  12. Choose the correct reason(s) for the stability of the lyophobic colloi...

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  13. A negatively charged suspension of clay in water will need for precipi...

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  14. Which of the following will be the least effective in the coagulation ...

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  15. Identify the statement which is incorrect w.r.t. surface phenomenon.

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  16. (i) At 298 K the volume of NH(3) adsorbed by 1 g of charcoal is higher...

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  17. Which of the following will show Tyndall effect ?

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  18. Some type of gels like gelatin loose water slowly. The process is know...

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  19. Which of these is a correct statement for the case of milk?

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  20. Which of the following statement regarding micelle is incorrect?

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