Consider the following statements:
I. Noise was added as an air pollutant to Air (Prevention and Control of Pollution) Act in 1987.
II. Montreal protocol was signed in 1987 to control emission of ozone depleting substances.
III. The Earth Summit for conservation of biodiversity and sustainable utilization of its benefits was held in 1992.

Which of the above statements are true?

Consider the following statements:
I. The “bad” ozone is the ozone that is formed in the troposphere.
II. The “good ozone” in the stratosphere acts as a shield against harmful UV radiation.
III. UV-A radiations can cause skin cancers and snow-blindness cataracts.

Which of the above statements are true?

The following diagram shows the effect of sewage discharge on some important characteristics of a river. What can be A and B respectively?

The following diagram shows the working of an electrostatic precipitator. Identify the correct statement:

Which award given to individuals or communities from rural areas that have shown extraordinary courage and dedication in protecting wildlife?

Read the following statements and chooser the correct option
Statement A: Electrostatic precipitator can remove over 99% particulate matter present in exhaust from a thermal power plant.
Statement B: According to CPCB particulate size 2.5m or less in diameter are responsible for causing the greatest harm to human health.

State True (T) or False (F) for the following statements and select the correct option
A. Motor vehicles equipped with catalytic converter should use unleaded petrol because lead in the petrol inactivates the catalyst.
B. Recently government of India has instituted the Amrita Devi Bishnoi Wildlife Protection Award for
individuals from urban areas that have shown extraordinary courage and dedication in protecting
wildlife.
C. Reforestation may occur naturally in a deforested area.
   A   B   C

Select the correct option regarding relative contribution of various greenhouse gases to total global warming.

Which one is not an example of primary pollutants?

In which part of the atmosphere ‘good ozone’ is found?

Which one is not an effect of increase in the level of greenhouse gases?

Which statement is incorrect for photochemical smog?

It has been recommended that storage of nuclear waste, after sufficient pre-treatment, should be done in suitably shielded containers buried within rocks about _____ deep below the earth’s surface.

Practical, hygienic, efficient and cost effective solution to human waste disposal is :-

In which device the exhaust is passed through a spray of water or lime for removal of gases as well as particles ?

Select the correct match w.r.t. pollutants :-

I                                                              II

Which phenomenon is indicated by below reaction:-
$\mathrm{HC}+\mathrm{NO}+{\mathrm{O}}_2\stackrel{\mathrm{UV}/\mathrm{Light}}{\to }{\mathrm{O}}_2+\mathrm{PAN}+{\mathrm{O}}_3$

Catalytic converter of automobiles converts unburnt hydrocarbons into

Painful skeletal deformity due to cadmium is

Amount of DDT in fish eating bird is :-

The international treaty to control ozone depletion is

The correct order of the relative contribution of various greenhouse gases to total global warming is:

Flood, drought and monsoon damage in India are the cause of:-

Which of the following is a secondary pollutant?

Match the items given in Column I with those inColumn II and select the correct option givenbelow: 
Column I                                     Column II 
a. Eutrophication                          i. UV-B radiation 
b. Sanitary landfill                        ii. Deforestation 
c. Snow blindness                        iii. Nutrient enrichment 
d. Jhum cultivation                       iv. Waste disposal