Match correctly the following and choose the correct option

(i) Environment Protection Act                                A. 1974

(ii) Air Prevention & Control of Pollution Act         B. 1987

(iii)Water Act                                                              C. 1986

(iv)Amendament of Air Act to include noise          D. 1981

The correct matches is;

1. i-C, ii-D, iii-A, iv-B

2. i-A, ii-C, iii-B, iv-D

3. i-D, ii-A, iii-B, iv-C

4. i-C, ii-D, iii-B, iv-A

Fill up the blanks:
i. In a scrubber, the exhaust is passed through a spray of _______.

ii. According to Central Pollution Control Board , particulate size _________ or less in diameter are responsible for causing the greatest harm to human health.

iii. Electrostatic precipitator, which can remove __________ present in the exhaust from a thermal power plant.

iv. As the exhaust passes through the catalytic converter, unburnt hydrocarbons are converted into carbon dioxide and ______.

          i                          ii                                iii                                 iv

1.  Lime          2.8 micro-meters        Gases like sulphur dioxide        Hydrogen

2. Kerosene     2.5 micro-meters        Gases like sulphur dioxide          Water

3. Lime           2.5 micro- meters          Over 99 per cent                     Water
                                                         particulate matter 

4. Kerosene      2.8 micro- meters       Over 99 per cent                     Hydrogen
                                                        particulate matter

Biochemical Oxygen Demand (BOD) in river water:

Ultrasound of how much frequency is beamed into a human body for sonography?

1. 30-40 MHz

2. 15-30 MHz

3. 1-15 MHz

4. 45-70 MHz

Photochemical smog pollution does not contain:

1. ozone

2. nitrogen dioxide

3. carbon dioxide

4. PAN (Peroxy Acyl Nitrate)

The limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and municipal wastewater into natural surface water is:

1. < 3.0 ppm

2. < 10 ppm

3. < 100 ppm

4. < 30 ppm

Which of the following supports a dense population of plankton and littoral vegetation?

1. Oligotrophic

2. Eutrophic

3. Lithotrophic

4. Agroecotrophic

Maximum greenhouse gases are released by:

1. India

2. Britain

3. USA

4. France

In a coal-fired power plant, electrostatic precipitators are installed to control the emission of:

1. $S{O}_2$

2. $N{O}_x$

3. SPM

4. CO

A lake with an inflow of domestic s wage rich in organic waste may result in:

1. Drying of the lake very soon due to algal bloom

2. Increased production of fish due to lot of nutrients

3. Death of fish due to lack of oxygen

4. Increased population of aquatic food web organisms