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ICSE-SURFACE CHEMISTRY -EXERCISE (PART-II ( DESCRIPTIVE QUESTIONS )) ( LONG ANSWER QUESTIONS)
- How does electrophoresis provide information about the sign of charge ...
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- Gelatin which is a peptide is added in ice-creams. What can be its ro...
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- Colloidal sulphur exhibits Brownian movement while a solution of sulph...
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- Describe briefly how gold sols can be prepared ?
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- Define Gold number.
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- Name any two protective colloids.
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- Why is the cotton cloth required to be treated with a mordant, before ...
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- In what respect electrophoresis differ from electrolysis ?
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- What are enzymes inhibitors ?
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- Explain the term heterogeneous catalysis. Give examples of heterogeneo...
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- What is the role of adsorption in heterogeneous catalysis?
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- Explain the terms: (i) Active centres (ii) inhibitors (iii) promote...
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- How are colloids classified on the basis of (i) physical states of ...
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- Give two chemical methods for the preparation of colloidal solutions.
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- What are emulsions ? What are their different types ? Give an example ...
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- What is demulsification ?
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- Give four uses of emulsions.
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- What do you mean by STDs?
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- Describe some features of catalysis by zeolites. (i) Medicines are ...
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- Explain either Brownian movement or Tyndall effect.
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