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Chemistry

Chemistry
The chemical name of rat poison is

Lead nitrate
Potassium cyanide
Zinc phosphide
Zinc oxide

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Chemistry
Threshold limit value of copper in the atmospheric air is

0.01 mg/m3
1.0 mg/m3
5.0 mg/m3
0.001 mg/m3

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Chemistry
Physico-chemical characteristics of water in water sources undergo changes due to

Aquatic macrophytes
Evapotranspiration
Auatic fungi
Effluents

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Chemistry
Which one is a sublime substance?

Potassium Iodide
Iodine
Table salt
Sugar

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Chemistry
The chief source for the production of nitrogeneous fertilizers is :

Nitrogen
Nitrogen dioxide
Ammonia
Nitric acid

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Chemistry
24 carat of diamond is equal to

91% gold
200 mg
200 g
95% mg

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MORE MCQ ON Chemistry

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