Which of the following gases causes pollution?
- A$CO$
- B$SO_2$
- CBoth $(a)$ and $(b)$
- DNone of the above
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The electrostatic precipitator can remove over . . . . . . particulate matter. (in $;\%$)
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|---|---|
| $(1)$ Mercury | $(a)$ Low blood pressure,blindness |
| $(2)$ Lead | $(b)$ Hyperkeratosis,liver cirrhosis |
| $(3)$ Arsenic | $(c)$ Bone deformation,testicular atrophy |
| $(4)$ Cadmium | $(d)$ Abdominal pain,haemolysis |
| $(e)$ Anaemia,convulsions |
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