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Chemistry

Chemistry
The metal extracted from Bauxite is :

Silver
Copper
Aluminum
Manganese

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Chemistry
The maximum number of covalent formed by nitrogen is

2
1
4
3

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Chemistry
Threshold limit value of copper in the atmospheric air is

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

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

Evapotranspiration
Effluents
Aquatic macrophytes
Auatic fungi

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Chemistry
What is used in storage batteries?

Tin
Lead
Zinc
Copper

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Chemistry
The National Chemical Laboratory is situated in

Bangalore
Patna
Pune
New Delhi

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MORE MCQ ON Chemistry

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