Air Pollution

Q.

Which one of the following is not a gaseous biogeochemical cycle in ecosystem?

1. carbon cycle

2. Nitrogen cycle

3. sulphur cycle

4. phosphorous cycle

Q. (i) is observed as the National Pollution Prevention Day in India to mark the anniversary of the (ii) . Here, (i) and (ii) are

1. $\left(i\right);5^{th}June,\left(ii\right)\text{Van Mahotsav}$
2. $\left(i\right);2^{nd}December,\left(ii\right)\text{Bhopal gas disaster}$
3. $\left(i\right){31}^{st}July,\left(ii\right)\text{World environment day}$
4. $\left(i\right){13}^{th}June,\left(ii\right)\text{Minamata incident}$

Q.

How do industries pollute the environment?

Q.

Ash from burning volcanoes, dust from storms and forest fires are the natural sources of ___ pollution.

Q. In which of the following both pairs have the correct combination :

1. Gaseous nutrient cycle - Nitrogen and Sulphur
   Sedimentary nutrient cycle - Carbon and Phosphorus
2. Gaseous nutrient cycle - Sulphur and Phosphorus
   Sedimentary nutrient cycle - Carbon and Nitrogen
3. Gaseous nutrient cycle - Carbon and Nitrogen
   Sedimentary nutrient cycle - Sulphur and Phosphorus
4. Gaseous nutrient cycle - Carbon and Sulphur
   Sedimentary nutrient cycle - Nitrogen and Phosphorus

Q.

Any undesirable change in the physical, chemical or biological characteristics of air, land and water that affect human life adversely is called__.

Q.

List three harmful effects of air pollution.

Q.

Why do humans pollute the environment?

Q. Steps taken by the Government of India to control air pollution include

1. Use of non-polluting Compressed Natural Gas (CNG) only as fuel by all buses and trucks.
2. Permission to use only pure diesel with a maximum of 500 ppm sulphur as fuel for vehicles.
3. Compulsory mixing of ethyl alcohol with petrol and biodiesel with diesel.
4. Compulsory PUC (Pollution Under Control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons.

Q.

The contamination of air with harmful substances is called ______________ ________________ .

Q.

The presence of Coliform bacteria is an indicator of water pollution. Explain?

Q.

Chlorofluorocarbons are not recommended to be used in refrigerators because they

1. increase temperature

2. deplete ozone

3. affect environment

4. affect human body

Q. What are the causes of environmental pollution?

Q. How does indoor air pollution affect human health?

Q.

The presence of which microorganism in the river Ganga indicates contamination?

1. Lactobacillus bacteria

2. Amoeba

3. Coliform bacteria

4. Mucor spores

Q. Name five effects of pollution on environment.

Q.

What are the long-term effects of global warming?

Q. "Prevention is better than cure for pollution". Justify this statement fully.

Q. A is an emission control device that reduces toxic gases and pollutants in exhaust gas from a car or vehicle.

1. exhaust pipe
2. catalytic converter
3. electrostatic precipitator

Q. A discussion on 'Environmental protection and conservation' was conducted by the school environment club in Rahul's school. The main point which arose was that the environment is undergoing severe degradation.
Which of the following do you think is/are responsible for the alarming rate of environmental degradation?

1. Ozone layer depletion
2. Greenhouse effect
3. Spread of epidemics
4. Global warming

Q. Which one of the following is not an effect of global warming?

1. Rise in atmospheric temperature
2. Increase in sea level
3. Decrease in frequency of droughts and floods
4. Change in distribution pattern of plant and animal species

Q.

Write the use of a catalytic converter.

Q.

What is the aim of Bharat Stage emission norms?

1. to reduce sulphur and nitrogen oxide from automobile exhausts

2. production of cleaner fuels

3. control discharge of waste products into water bodies

4. decrease the toxicity level of fertilisers

Q. Define the following:
(i) Pollution
(ii) Smog
(iii) Air pollution
(iv) Noise pollution

Q.

Air is contaminated by unwanted substances that have harmful effects on both living and non-living objects. This phenomenon is called _____________.

1. air utilisation

2. air pollution

3. air purification

4. air conservation

Q.

The addition of any constituent to air, water or land which degrades the natural quality of the environment is__.

Q.

The use of unleaded petrol and compressed natural gas in automobiles reduces noise pollution.

1. False

2. True

Q. A – A successful international agreement created in 1987 to protect the stratospheric ozone by limiting the use of ozone depleting substances (ODS).
B – It was organised by UNCED at Brazil in 1992. The aim was to reduce the emission of green house gases.
C – An international conference held in Japan which obtained commitments from different countries for reducing overall greenhouse gas emissions at a level 5% below 1990s level by 2008-2012. Identify A, B and C depicted above and select the correct option.

1. A ; Earth summit, B ; Kyoto protocol, C ; Montreal protocol
2. A ; Montreal protocol, B ; Earth summit, C ; Kyoto protocol
3. A ; Kyoto protocol, B ; Montreal protocol, C ; Earth summit
4. A ; Earrth summit, B ; Montreal protocol, C ; Kyoto protocol

Q.

The smoke released from various sources may get mixed with dust particles and small drops of fog to produce ___

Q. The toxic gas that leaked during the Bhopal gas tragedy was .

1. potassium isocyanate
2. chroloflurocarbons
3. ethyl thiocyanate
4. methyl isocyanate