CTET Exam (21st Feb 2016)
Mock Test (Environmental studies)
Q1. Boiled rice can be preserved for a longer duration in a refrigerator because
1.Moisture in rice is reduced at low temperature
2.Refrigerators contain some preservative in the atmosphere
3.Some beneficial microbes are added at low temperature
4.Microorganisms become inactive at low temperature
Q2. How can be Malaria detected?
1.By testing the blood for the presence of eggs of mosquito in RBCs
2.By testing the blood for the presence of Plasmodium in RBCs
3.By testing the blood for the presence of ruptured liver cells in blood
4.By testing the blood for the presence of larvae of mosquito in blood
Q3. Expand BOD.
1.Biochemical Oxygen Demand
2.Biological Oxygen Decomposition
3.Biogas Operation Demand
4.Biological Oxygen Demand
Q4. Select amongst the following which is usually not an important environmental pollutant.
Q5. Name the pollutant produced when nitrogen oxide, oxygen and waste hydrocarbons combine.
2.PAN and Ozone
Q6. Name a rich source of energy which never causes atmospheric pollution.
Q7. What will happen if water pollution continues at its current rate?
1.It will eventually make oxygen molecule unavailable to water plants
2.It will eventually water cycle
3.It will prevent precipitation
4.It will not provide nitrate molecules to the water plants
Q8. What term is given to the method of converting sewage water onto clean drinking water?
Q9. What is DDT?
4.Non biodegradable pollutant
Q10. Which of the following act as pollution indicators?