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Chemistry

Chemistry
The highest volume of gases in lower atmosphere is comprised of

Carbon dioxide
Nitrogen
Hydrogen
Oxygen

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Chemistry
The most electropositive elements among the following is

Cs
Ca
K
Na

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Chemistry
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called

magnetic separation
leaching
liquation
levigation

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Chemistry
Hamburger effect is otherwise known as–

Anaerobic metabolism
Respiratory product
Sodium pump
Chloride shift

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Chemistry
The element absorbed both in cation and anion form is

Calcium
Nitrogen
Phosphorus
Sulphur

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Chemistry
A subshell with l=2 can take up

3 electron
5 electron
10 electron
8 electron

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MORE MCQ ON Chemistry

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