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Chemistry

Chemistry
Which one of the following does not contain Silver ?

Horn Silver
Ruby Silver
German Silver
Lunar Caustic

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Chemistry
Nitric acid does not react with

Copper
Iron
Zinc
Gold

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Chemistry
The three elements most needed in common fertilisers are :

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

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Chemistry
Colloids can be purified by

Condensation
Condensation
Dialysis
Condensation

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Chemistry
Maximum permissible concentration of total hardness in drinking water is

50
200
500
100

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Chemistry
What is the atomic number of Oxygen

22
5
8
12

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MORE MCQ ON Chemistry

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