Back to ENVIRONMENTAL ISSUES
NEET UG BIOLOGY MCQ: ENVIRONMENTAL ISSUES
1
Easy
1 of 1
Understanding
+4 | -1
In electrostatic precipitator, electrode wires are provided with an electric current of several thousand volts, which produces a corona that release …A…
These electron attach to dust particle and given them a …B… charge within a very small fraction of a second. Here A and B refers to
These electron attach to dust particle and given them a …B… charge within a very small fraction of a second. Here A and B refers to
View answer and explanation
Correct option: C
A-electron; B-negative
Option C (A-electron; B-negative) is correct because electrostatic precipitators use electrons to negatively charge dust particles.
More Questions from ENVIRONMENTAL ISSUES
Practice All Chapter MCQs →
Supreme court of India has ordered the Delhi government to take measures to improve the quality of air. The government started to use _________________ in public fleet.
The unfavorable alteration of environment due to human activities is termed as
The polluting strength of sewage is usually characterized by its
A lake near a village suffered heavy mortality of fishes with in a few days. Consider the following reasons for this.
(i) Lost of urea and phosphate fertilizer were used in the crops in the vicinity
(ii) The area was sprayed with DDT by an aircraft
(iii) The lake water turned green and stinky
(iv) Phytoplankton populations in the lake declined initially thereby greatly reducing photosynthesis. Which of the following is not used for disinfection of drinking water? World most problematic aquatic weed is
(i) Lost of urea and phosphate fertilizer were used in the crops in the vicinity
(ii) The area was sprayed with DDT by an aircraft
(iii) The lake water turned green and stinky
(iv) Phytoplankton populations in the lake declined initially thereby greatly reducing photosynthesis. Which of the following is not used for disinfection of drinking water? World most problematic aquatic weed is