Environmental Science MCQ Questions and answers | EVS MCQ

Hence, the smog that occurs due to low temperature i.e. in cold climate, and has reducing environment is classical smog or London smog. So, the correct answer is 'London smog

The earth's radiation is often referred to as longwave radiation, while the sun's radiation is often referred to as shortwave radiation.

Increased surface UV leads to increased tropospheric ozone.

Photochemical smog is called Los Angeles smog.

High albedo of clouds, low albedo of water is the set of conditions below best explains why this is so.

The microorganisms breakdown the complex compounds of dead protoplasm of producers and consumers absorb some of the decomposition products and release simple substances. The slow rate of decomposition of fallen logs in nature is due to their low moisture content The cellulose is in high amount in fallen logs.

A high BOD indicates the presence of a large number of microorganisms, which suggests a high level of pollution.

This type of vegetation is found in the north-western part of the country including semi-arid areas of Gujarat,Rajasthan, Madhya Pradesh, Chhattisgarh, Uttar Pradesh and Haryana. Acacias, palms, euphorbias and cacti are the main plant species.

Green plants are not found beyond a certain depth in the ocean because light can not penetrate deep into the ocean so, no producers are found in that zone as in the absence of sunlight green plants will not be able to produce food by photosynthesis.

Euro II standard refers to lowering carbon content in fuel.