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Define one roentgen....

Define one roentgen.

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SURA PUBLICATION-MODEL QUESTION PAPER HIGHER LEVEL-Subjective Questions
  1. What happens to the resistance, as the conductor is made thicker ?

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  2. A person who is sitting at a distance of 400 m from a source of sound ...

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  3. Define one roentgen.

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  4. A is a reddish brown metal which combines with O2 at lt 1370 K gives...

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  5. What causes the opening and closing of guard cells of stomata during t...

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  6. Why is vegetative propagation practiced for growing some type ...

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  7. Why does the reaction rate of a reaction increase on raising t...

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  8. What will happen if trees are cut down ?

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  9. While doing an experiment for the determination of focal length of a c...

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  10. Air temperature in the Rajasthan deserrt can reach 46^(@)C. What is th...

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  11. Calculate the number of moles in 27 g of Al

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  12. (i) Arrive at, sytematically, the IUPAC name of the compound: CH(3)-CH...

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  13. Classify neurons based on its structure.

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  14. When any dry plant material is kept in water , they swell up ....

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  15. In angiosperms , the pollen grain germinates to produce pollen t...

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  16. How are stem cells useful in regenerative process ?

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  17. If you are an artist, which computer applications will be relevant for...

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  18. An object of height 3 cm is placed at 10 cm from a concave lens of foc...

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  19. An object is placed at a distance 20 cm from a convex lens of focal le...

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  20. Calculate the coefficient of cubical expansion of a zinc bar whose vol...

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