21. | Formula showing simplest whole number ratio is |
a. | scientific |
b. | mathematical |
c. | molecular |
d. | empirical |
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Answer: (d).empirical
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22. | Number of isotopes occupied by Palladium is |
a. | seven |
b. | six |
c. | nine |
d. | eleven |
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Answer: (b).six
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23. | Amount of KOH used in combustion analysis is |
a. | 50% |
b. | 60% |
c. | 70% |
d. | 80% |
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Answer: (a).50%
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24. | Number of radioactive isotopes is |
a. | 30 |
b. | 40 |
c. | 50 |
d. | 60 |
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Answer: (b).40
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25. | Unstable isotopes are produced by artificial |
a. | Disintegration |
b. | splitting |
c. | energy less |
d. | absorbance |
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Answer: (a).Disintegration
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