National Science Olympiad Forum By SOF Olympiad Trainer - Page 101

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Subject :NSO    Class : Class 1

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Subject :NSO    Class : Class 1

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Subject :NSO    Class : Class 1

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 6

Read the given statements and select the correct option.
Statement 1 : When sea water is allowed to stand in shallow pits, water gets heated by sunlight and slowly turns into water vapour through evaporation.
Statement 2 : Boiling takes place at all temperatures.

ABoth statements 1 and 2 are true and statement 2 is correct explanation of statement 1.
BBoth statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
CStatement 1 is true but statement 2 is false.
DBoth statements 1 and 2 are false.


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Class : Class 6

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 9

Hydrogen exists in three isotopic forms, 11H, 21H, 31H respectively known as protium, deuterium and tritium. Why are all the isotopes neutral in nature?

A Since neutrons are neutral in nature hence, isotopes are electrically neutral.
B All the isotopes have one electron and one proton, hence they are neutral.
C All the isotopes have one proton and one neutron, hence they are neutral.
D Increasing number of protons in the isotopes make them neutral.


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Class : Class 5
A

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 6

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