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Chemistry

Chemistry
Which one of the following is not coal variety?

Dolomite
Peat
Bituminous
Lignite

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Chemistry
The gas used for artificial ripening of green fruit is

acetylene
carbon dioxide
ethylene
ethane

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Chemistry
If lime water is kept in the air, it turns milky due to presence of :

Sulphurdioxide
Oxygen
Carbondioxide
Nitrogen

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Chemistry
The metal compound commonly found in Sindhoor or Kumkum is based on

Lead
Copper
Tin
Zinc

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Chemistry
Which among the following elements is found in maximum percentage in the human body ?

Carbon
Hydrogen
Nitrozen
Oxyzen

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Chemistry
Which among the following is used to dilute oxygen in the gas cylinders used by divers ?

Neon
Argon
Krypton
Helium

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