Q.1 Consider the following : 1) Coal pits 2) Sewers 3) Volcanic eruptions Which among the above are the sources of H2s in the environment ? A) 1 & 2 B) 2 & 3 C) Only 3 D) 1,2,3 Ans. D Q.2 A transition zone or region separating two biomes is known as : A) Ecological niche B) Ecocline C) Ecotone D) Ecotype Ans. C Q.3 Eutrophication of water bodies is mainly caused by : A) Carbonates & Oxides B) Hydrocarbons & Metals C) Carbonates & Sulphates D) Phosphates & Nitrates Ans. D Q.4 Which among the following is a secondary pollutant ? A) Benzene B) Nitrogen oxide C) Ozone D) Sulphur di oxide Ans. C Q.5 Which of the following pollutants causes surface deterioration of leather goods ? A) Hydrogen Sulphide B) Nitrogen oxide C) Ozone D) Sulphur dioxide Ans. D hdfcloan

Q.6 Which of the following region has lowest atmospheric humidity ? A) Monsoon B) Equatorial C) Prairies D) Polar Ans. D Q.7 Cartagena Protocol on biosafety deals with : A) establishing or promoting in situ conservation facilities for rare & endangered organisms B) Maintaining the world wide network of gene banks for all the known flora & fauna C) Monitoring & regulating development of living modified organisms D) Ensuring safe handling , safe usage & safe trans-boundary movement of living modified organisms Ans. D Q.8 Which among the following regions receives the highest annual average monsoon rainfall from June to September ? A) Gangetic West Bengal B) Western Uttar Pradesh C) Eastern Uttar Pradesh D) Punjab Ans. A Q.9 Other than Nitrogen & Oxygen which among the following is the most abundant gas in the Earth’s atmosphere ? A) Argon B) Carbon di oxide C) Methane D) Hydrogen Ans. A