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Chemistry

Chemistry
Threshold limit value of copper in the atmospheric air is

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

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Chemistry
Which one of the following is most electronegative

Tin
Lead
Silicon
Carbon

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Chemistry
In drinking water supply, which of the following treatments is not involved

Softening
Coagulation
Disinfection
Sedimentation

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Chemistry
Which of the following is used in dating archaeological findings ?

92235U
13H
614C
818O

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Chemistry
Carbon footprint can be reduced by

All of these
Commuting by public transport
Recycling waste materials
Using energy efficient appliances

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Chemistry
The gas liberated in the Bhopal gas tragedy was:

Methyl isocynate
Pheynl isocynate
Ethylene
Acetylene

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