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A strong fluoresence, i.e., emission of ...

A strong fluoresence, i.e., emission of light is observed is bombarded by the electrons.

A

zinc sulphide

B

sodium sulphide

C

hydrogen sulphide

D

magnesium sulphide

Text Solution

Verified by Experts

The correct Answer is:
A

`ZnS` is a fluorescent material.
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R SHARMA-STRUCTURE OF ATOM-Follow-up Test
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  2. The forerunner of today's television tube is the

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  3. A strong fluoresence, i.e., emission of light is observed is bombarded...

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  4. Canal ray particles have e//m ratio many times smaller than those of e...

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  5. When difference elements are present in the discharged tube positive i...

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  6. In Millikan's experiment, static electric charge on the oil droplets t...

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  7. Which of the following forces act on oil drops in Millikan's experimen...

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  8. It is possible to take an X ray photograph (radiograph) of the bones o...

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  9. Which of the following is incorrect?

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  10. Alpha (alpha) particles are

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  11. Studies on the phenomenon of radioactivity supported the conclusion th...

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  12. Which of the following is incorrect for Thomson's model of the atom?

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  13. Rutherford's experiment on the scattering of alpha particles slowed fo...

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  14. Rutherford's scattering experiment is related to theof the nucleus.

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  15. Rutherfords experiments , which established the nuclear model of atom ...

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  16. The radius of an atomic nucleus is of the order of

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  17. Ordinary ''lead'' pencils actually are made of a form of carbon called...

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  18. Rutherford's alpha particle scattering experiment eventually led to th...

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  19. Which of the following symbols are not acceptable ? (i) .(35)^(79)Br...

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  20. The increasing order (lowest first) for the values of e//m (charge//ma...

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