Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 11th Standard Biology - English Medium - Bio Zoology - Environmental Issues
Samacheer Kalvi 11th Biology - Bio Zoology - Environmental Issues - Book Back Questions in English Medium
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Question 1 Of 10
Write notes on the following:
Question 2 Of 10
Statement (1): Incomplete combination of fossil fuels releases CO
Statement (2): CO is a GHG
Question 3 Of 10
The molecular formula for ozone is………………
Question 4 Of 10
Which among the following is the most abundant Green-House-Gas (GHG) in the Earth’s atmosphere?
Question 5 Of 10
UN conference on Sustainable development in 2012 was held at ……………….
Question 6 Of 10
Assertion (A): The ozone layer protects the UV rays entering the Earth.
Question 7 Of 10
Excess of fluoride in drinking water causes:
Question 8 Of 10
The Hydrochlorofluorocarbons (HCFCs) are the compounds which have the following molecules:
Question 9 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.