dpsnoida.in International Environment Olympiad Class XII Sample Paper : Delhi Public School Noida

Name of the Organisation : Delhi Public School, Noida
Name of the Exam : International Environment Olympiad
Document Type : Sample Question Paper
Category : Class XII
Website : http://dpsnoida.in/session-information/international-environment-olympiad/
Download Question Paper : https://www.pdfquestion.in/uploads/22806-class-12.pdf

DPS Noida XII Environment Olympiad Paper

** The school is affiliated to CBSE and the CCE guidelines have been implemented from Class Nursery onwards with a Grading system reflecting Scholastic as well as Co-Scholastic areas in the Report Card. Project work and Oral testing emphasize the importance on self exploration and presentation skills.

Related / Similar Question Paper : DPS SMTE Sample Paper

Examination Policy

** A strong academic curriculum is followed with emphasis on experiential learning through planned class activities, audio visual aids and Multiple Intelligence lesson plans, Modules on the Smart Boards supplement the teaching content in all classrooms from Nursery to XII.

Sample Paper

1. The pH value of acid rain water is
a) 5.7
b) 7.0
c) 8.5
d) 6.0

2. Which of the following is the remedial measure for acid rain?
a) Reducing the release of oxides of nitrogen and sulphur into the atmosphere
b) Use of coal, free from sulphur
c) Use of electro-static precipitator and catalytic converters
d) All of the above

3. The primary cause of acid rain around the world is
a) CFC
b) SO2
c) CO
d) O3

4. Acid rain can be controlled by
a) Reducing SO2 and NO2 emissions
b) Increasing number of lakes
c) Increasing the forest cover
d) Reducing oxygen emission

5. Atmospheric oxidation of SO2 and SO3 is influenced by
a) Sunlight
b) Humidity
c) Presence of hydrocarbons
d) All of the above

6. Reduction in brightness of the famous Taj Mahal is due to
a) Global warming
b) Air pollution
c) Ozone depletion
d) Afforestation

7. The effect of acid rain is
a) Reduces soil fertility
b) Increases atmospheric temperature
c) Causing respiratory problems
d) Skin cancer

8. The process of movement of nutrients from the soil by the acid rain is called
a) Transpiration
b) Evaporation
c) Leaching
d) Infiltration

9. Ozone layer is present on
a) Troposphere
b) Stratosphere
c) Mesosphere
d) Thermosphere

10. Which of the following statements about Ozone is true
a) Ozone is a major constituent of photochemical smog
b) Ozone protects us from the harmful UV radiation of sun
c) Ozone is highly reactive
d) All of the above

11. Major compound responsible for the destruction of stratospheric ozone layer is
a) Oxygen
b) CFC
c) Carbon dioxide
d) Methane

12. Normal average thickness of stratospheric ozone layer across the globe is around
a) 200 du
b) 300 du
c) 400 du
d) 500 du

13. Ozone layer thickness is measured in
a) Ppm
b) Ppb
c) Decibels
d) Dobson units

14. Chlorofluorocarbons(CFC) are
a) Non-toxic
b) Non-flammable
c) Non-carcinogenic
d) All of the above

15. Ozone layer absorbs
a) UV rays
b) Infrared rays
c) Cosmic rays
d) CO

16. Which of the following is not an ill effect of acid rain
a) Results in killing fish
b) Causes stone leprosy
c) Leaches nutrients from the soil
d) Cause cataract

17. Formation of ozone layer is explained by
a) Rosenmund reaction
b) Handerson’s reaction
c) Chapman’s reaction
d) Perkin’s reaction

18. Each chlorine radical can destroy the following number of ozone molecules
a) 1000
b) 10,000
c) 1,00,000
d) 100

19. Freons are
a) HFC
b) CFC
c) NFC
d) Hydrocarbons

20. Which of the following statements about ozone is true?
a) Ozone is a major constituent of photochemical smog
b) Ozone is highly reactive
c) Ozone protects us from harmful UV radiations of sun
d) All of the above

21. Ozone depletion causes
a) Snow blindness
b) Photo-chemical smog
c) Acid rain
d) Vomiting

22. Which of the following statements is not true about animal husbandry?
a) It is a part of agricultural activity
b) It is livestock production
c) It is breeding, feeding and management of animals
d) It is protection of wild life

23. Which of the following is the purpose of animal husbandry?
a) Conservation of animal husbandry
b) Production of meat
c) Conservation of wild life
d) Conservation of forests

24. Domestic animals are used for
a) Dairy products
b) Production of fibre
c) Production of meat
d) All of these

25. Acid rain has been increasing day by day due to
a) Urbanisation
b) Industrialisation
c) Increase in vehicle population
d) None of the above