41. | Properties in which isotopes differ are |
a. | Chemical |
b. | Physical |
c. | electrical |
d. | mechanical |
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Answer: (b).Physical
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42. | Value of molar volume is |
a. | 22.14 dm3 |
b. | 25.14 dm3 |
c. | 32.14dm3 |
d. | 44.14dm3 |
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Answer: (a).22.14 dm3
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43. | Atomic mass is mass of carbon taken as |
a. | 12 |
b. | 13 |
c. | 14 |
d. | 15 |
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Answer: (a).12
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44. | Species having a negative or positive charge are |
a. | Radicals |
b. | atoms |
c. | molecules |
d. | ions |
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Answer: (d).ions
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45. | Relative atomic mass of Cu is |
a. | 61.5 |
b. | 63.5 |
c. | 64.5 |
d. | 67.5 |
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Answer: (b).63.5
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