If you are preparing for CBSE Class 12 Board Exam Term 1 which will be an objective type questions paper, then you need to practice multiple choice questions of Class 12 Biology Chapterwise. In this article of AKVTutorials, you will get Environmental Issues CBSE Class 12 Biology MCQ Questions with Answer Keys
Environmental Issues MCQ Questions for Class 12 Question No 11:
Common indicator organism of water pollution is
Option A : Lemna pancicostata
Option B : Eichhomia crassipes
Option C : Escherichia coli
Option D : Entamoeba histolytica
Show/Hide Answer
Option C : Escherichia coli
Environmental Issues MCQ Questions for Class 12 Question No 12:
Act formulated in 1986 was
Option A : Insecticide Act
Option B : Air (Prevention and Control of Pollution) Act
Option C : Water (Prevention and Control of Pollution) Act
Option D : Environment Protection Act
Show/Hide Answer
Option D : Environment Protection Act
Environmental Issues MCQ Questions for Class 12 Question No 13:
Rain is called acid rain its pH is below
Option A : 7
Option B : 6.5
Option C : 6
Option D : 5.6
Show/Hide Answer
Option D : 5.6
Environmental Issues MCQ Questions for Class 12 Question No 14:
Global warming can be controlled by
Option A : Increase deforestation, reducing efficiency of energy use
Option B : Reducing deforestation, cutting down use of fossil fuel
Option C : Reducing deforestation, increasing use of fossil fuel
Option D : Increasing deforestation, slowing down the growth of human population
Show/Hide Answer
Option B : Reducing deforestation, cutting down use of fossil fuel
Environmental Issues MCQ Questions for Class 12 Question No 15:
BOD in river water
Option A : Remains unchanged when algal bloom occurs
Option B : Increases when sewage gets mixed up with river water
Option C : Has no relationship with concentration of oxygen in water
Option D : Give a measure for Salmonella in water
Show/Hide Answer
Option B : Increases when sewage gets mixed up with river water
Environmental Issues MCQ Questions for Class 12 Question No 16:
The Chipko movement was launched for protection of
Option A : Forests
Option B : Grasslands
Option C : Wetlands
Option D : Livestock
Show/Hide Answer
Option A : Forests
Environmental Issues MCQ Questions for Class 12 Question No 17:
A river with inflow of domestic sewage rich in organic waste may result
Option A : Drying of the river very soon due to algal bloom
Option B : Increased population of fish due to biodegradable nutrients
Option C : Increased population of aquatic food web organisms
Option D : Death of fish due to lack of oxygen
Show/Hide Answer
Option D : Death of fish due to lack of oxygen
Environmental Issues MCQ Questions for Class 12 Question No 18:
Eutrophication of water bodies leading to killing of fishes is mainly due to non-availability of
Option A : Food
Option B : Light
Option C : Essential minerals
Option D : Oxygen
Show/Hide Answer
Option D : Oxygen
Environmental Issues MCQ Questions for Class 12 Question No 19:
The dB is a standard abbreviation used for the quantitative expression of
Option A : A particular pollutant
Option B : The dominant Bacillus in a culture
Option C : A certain pesticide
Option D : The density of bacteria in a medium
Show/Hide Answer
Option A : A particular pollutant
Environmental Issues MCQ Questions for Class 12 Question No 20:
In an area where DDT had been used extensively, the bird population declined significantly due to
Option A : Birds stopped laying eggs
Option B : Earthworms disappeared from the area
Option C : Many of the birds eggs did not hatch
Option D : Snakes started feeding extensively on birds
Show/Hide Answer
Option C : Many of the birds eggs did not hatch