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Explain the mechanism of the cleaning ac...

Explain the mechanism of the cleaning action of soaps.

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The dirt present on clothes is organic in nature and insoluble in water. Therefore, it cannot be removed by only washing with water. When soap is dissolved in water, its hydrophobic ends attach themselves in micelle formation and trap the dirt at the centre of the cluster. These micelles remains suspended in the water. Hence the dirt particles are easily washed away by water.
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CPC CAMBRIDGE PUBLICATION-DEPARTMENTAL MODEL QUESTION PAPER - 2-ANSWER THE FOLLOWING QUESTIONS
  1. Does the chemical reaction take place when zinc is added to ferrous su...

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  2. Draw the diagram showing longitudinal section of a flower and label th...

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  3. Explain the mechanism of the cleaning action of soaps.

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  4. How can ethanol be converted into ethanoic acid?

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  5. Draw the diagram of the arrangement of apparatus to show the action of...

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  6. Draw the ray diagram showing myopic eye and correction for myopia.

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  7. Draw the ray diagram showing the recombination of the spectrum of whit...

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  8. “We need to look for alternative sources of energy". Justify this stat...

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  9. Write any two events that occur during photosynthesis.

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  10. Draw the electron-dot structure of a methane molecule,

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  11. In the following circuit, which device can be connected in place of AB...

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  12. Draw the ray diagram showing the image formation by a convex lens, whe...

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  13. The reaction between lead nitrate and potassium iodide solutions is an...

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  14. a) An object is kept between centre of curvature and principal focus o...

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  15. (a) Give any two examples for refraction of light in daily life. Stat...

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  16. In the modern periodic table, 'A' and 'B' are two elements belonging t...

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  17. ""(6)^(12C and ""(6)^(14)C are two elements. Do both these elements g...

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  18. Observe the following chemical reactions i) Fe2O3 + 2Al to 2Fe + A...

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  19. How is the end product of nutrition glucose breaks down among all the ...

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  20. Explain the methods of i) Oxygen supply to the cells ii) Release of ca...

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