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QUESTIONS

Chemistry
The isomerism which exists between CH3CHCI2 and CH2CI. CH2CI is

chain isomerism
metamerism
positional isomerism
functional group isomerism

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Chemistry
The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?

1/8
1/6
1/3
1/4

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Chemistry
The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3

zero
5
4
2

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Chemistry
The National Chemical Laboratory is situated in

Bangalore
Patna
New Delhi
Pune

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Chemistry
Equal masses of oxygen, hydrogen and methane are kept under identical conditions. The ratio of the volumes of gases will be

1 : 1 : 1
2 : 16 : 2
2 : 16 : 1
1 : 16 : 2

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