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Chemistry

Chemistry
What do you understand by the term Espuma ?

Soap
Salt
Foam
Calcium

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Chemistry
Periodic table contains how many periods

7
8
6
10

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Chemistry
The nuclear particle having no mass and no charge, but only spin is

Meson
Neutrino
Proton
Electron

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Chemistry
Cement containing excess amount of lime

Cracks during setting
Is quick setting
Is slow setting
Becomes more strong

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Chemistry
The most abundant constituent of atmospheric air is :

Oxygen
Carbon
Hydrogen
Nitrogen

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Chemistry
The chemical name of ‘Common salt’ is

Ammonium chloride
Sodium nitrate
Sodium chloride
Calcium chloride

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