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Earn 100

The percentage of copper and oxygen in samples of CuO obtained by different methods were found to be the same. They illustrate the law of:

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Important Questions on Structure of Atom

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General Science for Competitive Exams>Chapter 10 - Structure of Atom>EXERCISE>Q 11
The total number of atoms represented by the compound CuSO4.5H2O is:
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General Science for Competitive Exams>Chapter 10 - Structure of Atom>EXERCISE>Q 12
The correct symbol for silver is:
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General Science for Competitive Exams>Chapter 10 - Structure of Atom>EXERCISE>Q 13
The cathode ray experiment was done for the first time by:
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General Science for Competitive Exams>Chapter 10 - Structure of Atom>EXERCISE>Q 14
The nucleus of an atom contains:
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General Science for Competitive Exams>Chapter 10 - Structure of Atom>EXERCISE>Q 15
By whom was neutron discovered?
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General Science for Competitive Exams>Chapter 10 - Structure of Atom>EXERCISE>Q 16
In an atom valence electron are present in:
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General Science for Competitive Exams>Chapter 10 - Structure of Atom>EXERCISE>Q 17
Which of the following statements is incorrect for cathode rays?
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General Science for Competitive Exams>Chapter 10 - Structure of Atom>EXERCISE>Q 19
Which of the following pairs are isotopes?