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Chemistry

Chemistry
Which one of the following is a micro-element ?

Chlorine
Hydrogen
Oxygen
Nitrogen

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Chemistry
Colour imparted to the Bunsen flame by strontium salt is

Apple-green
Crimson red
Brick red
Bluish green

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Chemistry
Drinking soda is

Acidic
Alkaline
Oxidant
Neutral

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Chemistry
CNG used in automobiles to check pollution, mainly consists of

N2
H2
CH4
CO2

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Chemistry
The gas used for artificial ripening of green fruit is

ethane
ethylene
carbon dioxide
acetylene

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Chemistry
The lightest gas which is non-inflammable is

Helium
Oxygen
Nitrogen
Hydrogen

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