Environmental Science Multiple Choice Questions

introduction to environmental science multiple choice questions :

Environmental Science is a branch of science that deals with the environment. Both biotic (living) and a biotic (non-living) components together constitute our environment. Every species of plants and animals influences its environment and in turn gets influenced by it. Man is the only organism which interferes with the environment to a large extent.



environmental science multiple choice questions


Here are some important multiple choice questions along with their answers related to environmental science:

1. Biotic environment includes

    (a) producers                             (b) consumers

    (c) decompose rs                        (d) all the above

Answer: (d) all the above

2. De-composers include

    (a) bacteria                                 (b) fungi

    (c) both                                       (d) animals

Answer: (c) both

3. A biotic environment does not include

    (a) air                                          (b) water

    (c) soil                                          (d) plants

Answer: (d) plants

4. Vermicomposting is done by

    (a) fungus                                   (b) bacteria

    (c) worms                                    (d) animals

Answer: (c) worms

5. The group of organisms which convert light into food are called

    (a) autotrophs                             (b) heterotrophs

    (c) decomposers                         (d) omnivores

Answer: (a) Autotrophs

6. Which one the following is not biodegradable?

    (a) vegetables                             (b) fruits

    (c) earthworm                              (d) aluminium foil

Answer: (d) Aluminium Foil

7. Animal(s) which is/are active at night.

    (a) owl                                         (b) rat

    (c) cockroach                              (d) all the above

Answer: (d) All the above

8. An animal that can tolerate the heat of the desert is

    (a) rats                                        (b) camel

    (c) cow                                         (d) lion

Answer: (b) camel

9. Air pollution is caused by

   (a) Insecticides                    (b) Sewage

   (c) Smoke                            (d) Loud speakers

Answer: (c) smoke

10. If waste materials contaminate the source of drinking water which of the following diseases will spread?

   (a) Scurvy                            (b) Typhoid

   (c) Malaria                            (d) Anaemia

Answer: (b) Typhoid


Environmental Science Multiple Choice Questions


11. In our country the Van Mahotsav Day is observed on

   (a) Second of October          (b) First of December

   (c) Tenth of August               (d) First of July

Answer: (d) First of July

12. Which of the following wastes cannot be decomposed by bacteria to form compost?

   (a) Kitchen wastes                 (b) Plastic and polythene bags

   (c) dead plants                      (d) bodies of insects living in the soil

Answer: (b) Plastic and polythene bags

13. Which of the following problems is not created by noise pollution ?

   (a) Diarrhoea                         (b) Hypertension

   (c) Deafness                          (d) Irritation

Answer: (a) Diarrhoea

14. Plants are green because of the presence of a pigment called:

    (a) glucose                                 (b) nitrogen

     (c) chlorophyll                            (d) oxygen

Answer: (a) chlorophyll

15. Air is composed of gases, water vapours and

    (a) dust particles                             (b) rainfall

    (c) snowfall                                       (d) light

Answer: (a) dust particles

16. Medicine of quinine is provided by

    (a) Eucalyptus plant                            (b) aconite plant

     (c) cinchona plant                               (d) money plant

Answer: (c) cinchona plant

17. Chief source of energy in environment is

    (a) fire                                                     (b) moon

    (c) sun                                                     (d) stars

Answer: (c) sun

18. When trees are cut, amount of oxygen

    (a) decreases                                            (b) increases

    (c) both (a) and (b)                                    (d) remains same

Answer: (a) decreases

19. Process through which plants reproduce:

    (a) Eating                                                        (b) Evaporation

    (c) Pollination                                                  (d) Condensation

Answer: (c) pollination

20. 71% of earth surface is covered with:

     (a) land                                                            (b) air

     (c) water                                                           (d) coal

Answer: (c) water

Know more about this click  here Water Contamination Facts And What is Green Chemistry

How Old is The Earth According To Science

How old is the earth according to science??

The age of Earth cannot be computed directly from material that is solely from the Earth. There is proof that energy from the Earth's accumulation caused the surface to be molten. Further, the processes of erosion and crystal recycling have apparently destroyed the entire earliest surface.

Scientists determine the probable age of the Solar System and to calculate an age for the Earth by assuming that the Earth and the rest of the solid bodies in the Solar System formed at the same time and are, therefore, of the same age.


Technique used to find how old is the earth??


Thousands of meteorites, which wreckage from asteroids that fall to Earth, have been recovered. These primitive objects give the best ages for the time of formation of the Solar System. There are more than 70 meteorites, of different types and shapes, whose ages have been measured using radiometric dating techniques. The results show that the Solar System, formed between 4.53 and 4.58 billion years ago.

The best age for the Earth comes not from dating the ages of individual rocks but by considering the Earth and meteorites as part of the same evolving system in which the isotopic composition of lead, specifically the ratio of lead-207 to lead-206 changes over time owing to the decay of radioactive uranium-235 and uranium-238, respectively.

Because the accurate accretion time of Earth is not yet known, and the predictions from different accretion models range from a few millions up to about 100 million years, the exact age of Earth is difficult to determine.




Age of Earth according to science


Thousands of meteorites, which wreckage from asteroids that fall to Earth, have been recovered. These primitive objects give the best ages for the time of formation of the Solar System. There are more than 70 meteorites, of different types and shapes, whose ages have been measured using radiometric dating techniques. The results show that the Solar System, formed between 4.53 and 4.58 billion years ago.

The best age for the Earth comes not from dating the ages of individual rocks but by considering the Earth and meteorites as part of the same evolving system in which the isotopic composition of lead, specifically the ratio of lead-207 to lead-206 changes over time owing to the decay of radioactive uranium-235 and uranium-238, respectively.

Because the accurate accretion time of Earth is not yet known, and the predictions from different accretion models range from a few millions up to about 100 million years, the exact age of Earth is difficult to determine.

If you want to know more clarification click here Nucleic Acids Research and What is Phenylalanine