673 questions
31
atomic stucture
Easy
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-0.33
The atoms, in which the number of protons is same but the number of neutrons is diff erent, are known as
32
atomic stucture
Easy
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-0.33
Isotopes of an element diff er in :
33
atomic stucture
Easy
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Isotopes are those atoms of the same element which have
34
atomic stucture
Easy
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Isotopes is that nuclei of atomic nucleus in which
35
atomic stucture
Easy
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-0.33
Radioactivity is measured by
36
atomic stucture
Easy
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Radioactivity was discovered by
37
Physical and Chemical Changes, Solution
Easy
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An example of physical change
38
Physical and Chemical Changes, Solution
Easy
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Change of water into the vapour is called
39
Physical and Chemical Changes, Solution
Easy
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Which of the following is an example of chemical change
40
Physical and Chemical Changes, Solution
Easy
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What form of energy is produced in the decomposition of water?