Top 150+ Solved Environmental Science MCQ Questions Answer
Q. Chlorofluorocarbon releases a chemical harmful to ozone is
a. Chlorine
b. Fluorine
c. Carbons
d. Nitrogen peroxide
Q. In the breakdown of the ozone layer, the ozone (O3) directly reacts with
a. Ultraviolet light
b. Chlorine atoms
c. Oxygen atoms
d. CFC molecules
Q. A population is a group of
a. Individual in a family
b. Individuals in a species
c. Communities in an ecosystem
d. Species in a community
Q. The main cause of world population growth in 18th and 19th centuries was
a. Decrease in birth rates
b. Decrease in death rates
c. Industrial revolution
d. None of these
Q. What is most important factor for the success of animal population?
a. Natality
b. Adaptability
c. Interspecies activity
d. Unlimited food
Q. Human population growth is
a. Horizontal line
b. L-shaped curve
c. J-shaped curve
d. Parabola curve
Q. The main factors contributing to the decline in death rate in 20th century were
a. Improved agricultural practices and increased birth rates
b. Improved health care, sanitation and nutrition
c. Endemic poverty and low levels of education
d. European colonization and improved agriculture practices
Q. The world population in 2000 was approximately
a. 5.1 billion
b. 2.1 billion
c. 6 billion
d. 8 billon
Q. The average life expectancy around the world is currently
a. Stable
b. Increasing
c. Decreasing
d. Not changing
Q. Exponential growth in population occurs when there is
a. A great environment resistance
b. No environment resistance
c. A fixed carrying capacity
d. No biotic potential
Q. The disease which wiped out 33% of population of Europe in the 12th and 13th centuries was
a. Cholera
b. Meningitis
c. Plague
d. Diphtheria
Q. A human population is small, there is greater chance of
a. Mutation
b. Gene flow
c. Genetic drift
d. Natural selection
Q. Which of the following is a problem not associated with population growth?
a. Increased resource consumption
b. Environmental pollution
c. Food and energy shortages
d. None of these
Q. Unrestricted reproductive capacity, in a population, is called
a. Birth rate
b. Carrying capacity
c. Fertility rate
d. Biotic potential