Environmental I...

The noise level that can cause permanent impairment of hearing ability of human beings :

Which of these pollutants are responsible for photochemical smog formed in congested metropolitan cities?

A method to eradicate pests using the pest's natural predators or parasites, which is environmental friendly is termed as 

The recent reports of acid rain in big industrial cities are due to the effect of atmospheric pollution by

What does high intake of fluoride mainly affect?

A sure indicator of air pollution is

Biological oxygen demand (BOD) is the amount of oxygen consumed by microbes to decompose organic matter. It is least in 

Air pollution is:

i. 5th leading cause of deaths in Indian sub-continent.

ii. ranked among top 10 killers in the world.

iii. 7th most dangerous killer in south Asia.

Which of the following are the immediate concerns regarding carbon cycle?

a. Output rate of carbon locked in deposits of coal, petroleum and natural gas
b. Green house effect caused by CO₂
c. Increase in CO₂ on Earth's atmosphere by 12 to 14%
d. Increase in CO₂ decreasing primary productivity
e. Increase in photorespiration

Which of the following is the correct match of environment-related disorder and its cause?

Mile Island and Chernobyl disasters are environmental disasters associated with the accidental leakage of radioactive waste. In India, Bhopal gas tragedy, an environmental disaster, is associated with the leakage of

Which of the following gets reduced as a result of 'eutrophication'?

Which of the following organisms are the indicators of sulphur dioxide pollution?

Chlorofluorocarbons (CFCs) which are used in refrigerators, air conditioners and aerosol sprays are responsible for 

normal adults, the enzyme which catalyses conversion of MHb into Hb is :

Formation of non-functional methaemoglobin causes blue-baby syndrome. This occurs due to

Which of the following chemicals was responsible for 'itai itai' disease in Japan?

Due to greenhouse effect, the average temperature of Earth's atmosphere is gradually increasing. This is called global warming. Which of the following are not greenhouse gases?

Directions: In the following question, two statements are given, namely Assertion (A) and Reason (R). Read both these statements and choose the correct option regarding them.

Assertion (A): Nitrogen fixation is achieved industrially by the Haber Bosch process in which H₂ and N₂ are mixed together at high temperature and pressure in the presence of a catalyst to form NH₃.
Reason (R): Fertilisers like ammonium nitrites are prepared by this process.

Term acid rain was coined for the first time by