Tag: evs

Questions Related to evs

The effect of pollution is first and most marked on

  1. Natural flora and fauna of a place

  2. Natural balance ofour environment

  3. Natural geochemical cycles

  4. All the above


Correct Option: A
Explanation:

Natural flora and fauna are the plants and animals that live in that particular area. The harmful effect of pollution such as air or water is most marked on these organisms as they are the ones who at the risk of initial exposure due to their proximity to pollutants. Thus the correct answer is option A.

World environment day is celebrated on ______

  1. ${ 5 }^{ th }\quad June$

  2. ${ 22 }^{ nd }\quad April$

  3. ${ 3 }^{ rd }\quad December$

  4. ${ 16 }^{ st }\quad September$


Correct Option: A
Explanation:

5th June is World Environment Day, 22nd April is World Earth Day, 3rd September is World Ozone Day and 3rd December is World Conservation Day.

The environment is composed of

  1. Lithosphere, Hydrosphere, Atmosphere

  2. Lithosphere and Stratosphere

  3. Troposphere and Stratosphere

  4. Lithosphere and Hydrosphere


Correct Option: A
Explanation:
Lithosphere consists of the earth's core, the mantle, crust, ocean floor, mountains, sand, rocks, etc.
Hydrosphere is made of everything that includes water such as oceans, rivers, lakes, rain and ice caps.
Atmosphere is made of gasses such as oxygen, hydrogen, water vapor, ozone, and the wind.
All the three make up the environment. 
Thus, the correct answer is option 'Lithosphere, Hydrosphere, Atmosphere'.

Ozone day is

  1. January 30

  2. December 25

  3. April 21

  4. September 16


Correct Option: D
Explanation:

The United Nations (UN) International Day for the Preservation of the Ozone Layer is celebrated on September 16 every year. This event commemorates the date of the signing of the Montreal Protocol on Substances that Deplete the Ozone Layer in 1987.

Therefore, the correct answer is option D.

Best soil for healthy and vigorous growth of a plant is

  1. Sandy soil

  2. Loam

  3. Clay

  4. None of the above


Correct Option: B
Explanation:

Clay is rich in minerals but has poor aeration and sand has good aeration but lacks water holding capacity. The size of soil particles is largest in the case of sand and smallest in the case of clay. Loam is an ideal mix of clay and sand and it contains humus.

So, the correct answer is option B.

The spiders and other small insects are found in the 

  1. Cupboards

  2. Drawers

  3. Cracks of wall

  4. All of the above


Correct Option: D

Xeric environment is characterised by

  1. Precipitation

  2. Low atmospheric humidity

  3. Extremes of temperature

  4. High rate of vapourisation


Correct Option: B
Explanation:

Xeric environment means dry conditions or low atmospheric humidity and lack of precipitation. Also the temperature variations depend on several other variables like altitude, latitude and hemisphere. High rates of vapourisation is not a characteristic of environment but a consequence of low atmospheric humidity.

The cold mountain ranges are the home to 

  1. Camels and yaks

  2. Yaks and goats

  3. Bear and camels

  4. None of the above


Correct Option: B

The aquatic animals like the crabs and fishes were found near

  1. Himalaya

  2. Puri

  3. Rishikesh

  4. Rajasthan


Correct Option: B

The climate found in the desert is

  1. Hot and airy

  2. Humid and airy

  3. Hot and humid

  4. Dry and airy


Correct Option: C