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Chemistry

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

molarity
molality
formality
normality

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Chemistry
The strongest oxidizing agent among the following is:

Oxygen
Iodine
Fluorine
Chlorine

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Chemistry
Oxygen which is vital for life is a product of photosynthesis and comes from

Oxides of mineral elements
Water
Carbon dioxide
Carbonates from soil

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Chemistry
The laws of electrolysis are given by

Faraday
Arrhenius
Lewis
Ostwald

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Chemistry
The major constituent of air is

hydrogen
oxygen
carbon dioxide
nitrogen

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Chemistry
The three elements most needed in common fertilisers are :

Phosphorous, Sodium and Nitrogen
Nitrogen, Potassium and Phosphorous
Calcium, Phosphorous and Potassium
Sulphur, Phosphorous and Sodium

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