Striving for Better Environment Part I

01.

Name the following: The products which affect the normal functioning of ecosystem
and have an adverse effect on plants, animals and humans.

02.
Fill in the Blank: Harmless or useful substances can become _______, when quantity
or concentration increases in certain circumstances

03.
Fill in the Blank: ________ of air by toxic gases and minute particles of solid
and liquid particulates, in concentration which is harmful to human beings and surrounding
is Air Pollution.

04.
Find Odd one out: Smoke, Dust, oxides of sulphur & nitrogen, Domestic sewage

05.
Find Odd one out:
Volcanic eruption,
Sand and dust storm,
Forest fires,
Industries

06.
Name the following: The type of pollutants that are formed in the atmosphere by
chemical reaction between primary pollutants and atmospheric constituents.
Example: SO3, O3, hydrogen cyanide, peroxyacetyl nitrate, ketones, etc

07.
Fill in the Blank: The types of Air Pollutants based on state of matter are Gaseous
and _________

08.
Find Odd one out:
Burning of firewood,
cowdung cakes,
agricultural residue,
vehicles

09.
Find Odd one out:
Carbon dioxide,
Smoke,
Radioactive compounds,
peroxyacetyl nitrate

10.
Fill in the Blank: The harmful effect of air pollution on human health depends on
Concentration, Nature of air pollutants and period of ______

11.
Find Odd one out:
Chronic pulmonary disease
Cardio vascular disease
Lung cancer
Irritation of eyes
Premature death

12.
Fill in the Blank: The Short term effects of air pollution on human beings are Respiratory
infections like _______ and pneumonia

13.
Fill in the Blank: The effect of air pollution on plants is yellowing or ______
of leaves.

14.
________, the second layer of atmosphere reaches 48 km above the earth’s surface,
and at the very top it contains ozone layer.
(a) Exosphere
(b) Stratosphere
(c) Ionosphere
(d) Troposphere

15.
Fill in the Blank: Atmospheric ozone is being destroyed mainly by chlorine atoms
of __________, which is used as coolant in refrigerators, freezers, air-conditioners
(before 1995).

16.
Fill in the Blank: _____ effect is a phenomenon which causes Global Warming and
Climate Change.

17.
Find Odd one out:
Carbon dioxide
Nitrogen
Methane
Nitrous oxide
CFC-12

18.
True or False: CFC-12 can remain for 100 years in atmosphere

19.
Fill in the Blank: Algae, bacteria, virus and parasites are ________ water pollutants

20.
Fill in the Blank: Fine sand, clay, soil and precipitated salts, dissolved particles
like rock and other compounds, toxic metals like arsenic, cadmium, lead, mercury,
silver, and some radioactive elements are ________ water pollutants

21.
True or False: The water pollution causes diseases like cholera, typhiod, diarrhoea,
dysentery, hepatitis, polio and jaundice.

22.
Name the following: The enrichment of water bodies by inorganic plant nutrients
like nitrate, phosphate occurring either naturally or due to human activity is ________

23.
Fill in the Blank: Eutrophication causes excessive growth of ________ and algae

24.
Industrial waste is one of the biggest contributors to ____ pollution
(a) Air
(b) Noise
(c) Radioactive
(d) Land

25.
Celebration of festivals is one of the biggest contributors to ____ pollution
(a) Air
(b) Noise
(c) Radioactive
(d) Land

26.
Name the following: Substances used to kill pests and weeds on farm. Also one of
the sources of soil pollution.

27.
Find Odd one out:
Expired medicines,
Soiled dressing,
Fly ash,
Disposable syringes,
IV fluid bottles,
Gloves

28.
Human and animal excreta contains ________
(a) Toxic Chemicals
(b) Cytotoxic drugs
(c) Pathogens
(d) Calcium

29.
Radioactive material move from soil to crops to life stock and then to human bodies
through _______
(a) Nitrogen Cycle
(b) Carbon Cycle
(c) Food Chain
(d) Oxygen Cycle

30.
Fill in the Blank: ______ is contamination of natural environment that can harmfully
affect the ecosystem.

Answers:

01. Pollutants
02. pollutants
03. Contamination
04. Domestic sewage { Rest all are air pollutants }
05. Industries { Rest all are Natural Sources of air pollution }
06. Secondary
07. Particulate
08. vehicles { Rest all are rural sources of air pollution }
09. peroxyacetyl nitrate { Rest all are Primary pollutants }
10. Exposure
11. Irritation of eyes { Rest all are Long Term effects of Air Pollution }
12. bronchitis
13. Chlorosis
14. (b) Stratosphere
15. CFC’s (Chloroflurocarbons)
16. Green house
17. Nitrogen { Rest all are Greenhouse gases }
18. True
19. Biological
20. Inorganic
21. True
22. Eutrophication
23. phytoplankton
24. (d) Land
25. (b) Noise
26. Pesticides
27. Fly ash { Rest all are Biomedical wastes }
28. (c) Pathogens
29. (c) Food Chain
30. Pollution