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What are canal rays?...

What are canal rays?

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Canal rays are positively charged radiations. These rays consist of positively charged particles known as protons. They were discovered by Gold stein in 1886.
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Assertion : 1. In the presence of an electric field, the canal rays are deflected towards the negative electrode. Reason : Canal rays are composed of electrons which are negatively charged.

NCERT ENGLISH-STRUCTURE OF THE ATOM -All Questions
  1. What are canal rays?

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  2. If an atom contains one electron and one proton, will it carry any cha...

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  3. On the basis of Thomson's model of an atom, explain how an atom as a w...

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  4. On the basis of Rutherford's model of an atom, which subatomic particl...

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  5. What do you think would be the observation if the alpha-particle scatt...

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  6. Name the three sub-atomic particles of an atom.

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  7. Helium atom has an atomic mass of 4 u and two protons in its nucleus. ...

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  8. Write the distribution of electrons in carbon and sodium atoms.

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  9. If K and L shells of an atom are full, then what would be the total nu...

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  10. How will you find the valency of chlorine, sulphur and magnesium ?

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  11. If number of electrons in an atom is 8 and number of protons is also 8...

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  12. For the symbol H,D and T tabulate three sub-atomic particles found in ...

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  13. Write the electronic configuration of any one pair of isotopes and iso...

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  14. Compare the properties of electrons, protons and neutrons.

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  15. What are the limitations of J.J. Thomson’s model of the atom?

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  16. Describe Rutherford atom model. What are the drawbacks of this model?

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  17. What are the postulates of Bohr's model of an atom?

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  18. Summarise the rules for writing of distribution of electrons in variou...

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  19. Define valency by taking examples of silicon and oxygen.

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  20. Explain with examples (i) Atomic number, (ii) Mass number, (iii) Isoto...

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