Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 12th Standard Bio Zoology - English Medium - Environmental Issues

Samacheer Kalvi 12th Bio Zoology - Environmental Issues - Book Back Questions in English Medium


00:00:00
Answered
0
Skipped
0
Unseen
0
Correct : 0 Incorrect : 0
Question 1 Of 10

Which among the following always decreases in a Food chain across tropic levels?


Question 2 Of 10

The intensity of noise is measured in…………..


Question 3 Of 10

Identify the correct statement indicating 4Rs of treating water.


Question 4 Of 10

UN conference on Sustainable development in 2012 was held at ……………….


Question 5 Of 10

The Ozone Day is observed every year on September 16 as on this day in 1987 the …………………. was signed for launching efforts to arrest the depletion of the fragile ozone layer in the stratosphere that prevents the harmful ultra-violet rays of the Sun from reaching the Earth. Fill the correct word in blank.


Question 6 Of 10

…………….. are the major causes of CO pollution in large cities and towns.


Question 7 Of 10

Statement (1): The intensity of noise is measured in the dobson (dB) unit.
Statement (2): Noise provides immense bliss.


Question 8 Of 10

The use of microorganism metabolism to remove pollutants such as oil spills in the water bodies is known as ……………..


Question 9 Of 10

The molecular formula for ozone is………………


Question 10 Of 10

As per 2017 statistics, the highest per capita emitter of Carbon dioxide in the world is


Tags