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Atoms and Molec...

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  • Question 1
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    Why is atom electrically neutral ?

  • Question 2
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    Mass number is denoted by:

  • Question 3
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    An Indian philosopher who said that the smallest particles normally exist in a combined form which gives us various forms of matter is:

  • Question 4
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    _________ deduced that all kind of matter are made up of "anu".

  • Question 5
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    1 Nanometer is equal to :

  • Question 6
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    Which of the following atomic number will most likely form an anion?

  • Question 7
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    Which law was given by Antoine L. Lavoisier?

  • Question 8
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    A sealed tube containing phosphorus was weighed and heated carefully. After completion of the reaction, the tube was re-weighed under similar conditions. The weight of the tube will:

  • Question 9
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    According to Dalton, atom combines in a _________ ratio to form compounds.

  • Question 10
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    Law of definite proportion does not apply to nitrogen oxide because:

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