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What do you understand by the term natur...

What do you understand by the term natural selection?

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According to theory of natural selection, nature selects fittest animal. Animals which are not fit are eliminated by nature itself.
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CPC CAMBRIDGE PUBLICATION-CPC MODEL QUESTION PAPER-4-ANSWER THE FOLLOWING QUESTIONS
  1. What is neutralisation reaction?

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  2. What do you mean by double circulation of blood?

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  3. What do you understand by the term natural selection?

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  4. Which one is having lesser resistance, a 60W bulb or a 40W bulb?

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  5. What two characteristics are observed when dilute hydrochloric acid is...

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  6. An organic compound burns with a sooty flame. Is it saturated or unsat...

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  7. What is an armature?

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  8. What are the two general principles of energy flow?

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  9. How is caustic soda obtained? Mention its uses.

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  10. Draw a diagram of testing the conductivity of a salt solution.

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  11. Energy transfer is said to be unidirectional where biochemical transfe...

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  12. What is Myopia? Name the lens used to correct Myopia.

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  13. The far point of a myopic person is 150cm in front of eye, calculate t...

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  14. Draw the diagram of an electric circuit in which the resistors R(1),R(...

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  15. Sketch and label the structure of nephron.

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  16. How is Plaster of Paris prepared? What reaction takes place when it se...

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  17. What is reproduction? What are its two types? Which one of the two con...

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  18. How will an organism be benefited if it reproduces through spores?

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  19. One day Suresh connected many house hold high power appliances having ...

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  20. Draw the ray diagrams for the image formation in a convex lens when an...

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