(A) Name any two places where it is essential to intall electrostatic precipitators . Why is it reuired to do so ? (b) Mention one limitation of the electtostatic precipitor.

(A) Name any two places where it is essential to intall electrostatic

1.	(A) Name any two places where it is essential to intall electrostatic precipitators . Why is it reuired to do so ? (b) Mention one limitation of the electtostatic precipitor.
Answer» The two places where it is essential to install electrostatic precipitators are the following: 1. thermal power plants 2. Smelters it is required so to separate particulate and gaseous air pollutants from harmless gases such as nitrogen , oxygen etc. ( B) An electrostatic precipitor cannot remove particulate matter of size 2.5 micrometers or less in diameter(PM.2.5) these fine particle can cause respiratory symptoms , inflammationnn and irration of lungs and premature death.

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(i) Arrange the following compounds in an increasing order of basic strength : `C_(6)H_(5)NH_(2), C_(6)H_(5)N(CN_(3))_(2), (C_(2)H_(5))_(2)NH and CH_(3)NH_(2)` (ii) Arrange the following compounds in a decreasing order of `pK_(b)` values: `C_(2)H_(5)NH_(2), C_(6)H_(5)NHCH_(3), (C_(2)H_(5))_(2) NH and C_(6)H_(5)NH_(2)`
Rerrange the following in an increasing order of their basic strengths: `C_(6)H_(5)NH_(2),C_(6)H_(5)N(CH_(3))_(2),(C_(6)H_(5))_(2)` NH and `CH_(3)NH_(2)`.
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(A) Name any two places where it is essential to intall electrostatic precipitators . Why is it reuired to do so ? (b) Mention one limitation of the electtostatic precipitor.

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