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Chemistry

Chemistry
The number of moles of solute present in 1 kg of a solvent is called its

molality
formality
molarity
normality

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Chemistry
Which one of the following was used as a chemical weapon in the first world war ?

Mustard gas
Water gas
Carbon monoxide
Hydrogen cyanide

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Chemistry
Which among the following is found in chlorophyll ?

Ca2+
Mg2+
Fe2+
A l3+

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Chemistry
Which one is not a pure form of carbon

Coal
Graphite
Diamond
Gold

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Chemistry
Cement is made hard with

Polymerisation
Dissociation of water
Hydration and dissociation of water
Dehydration

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Chemistry
If the sewage is fully oxidized, the nitrogen is in the form of

Nitramines
Nitrates
Ammonia
Nitrites

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