2nd PUC Biology Series 10 December 3, 2020December 22, 2020wefruPUC Science 2nd Year Biology Series-10 quiz 21 Created on December 02, 2020 By wefru2nd puc Biology Series 10TEST YOUR KNOWLEDGE OF SCIENCE 1 / 10Q.91 In 1984, Bhopal gas tragedy was caused due to leakage of potassium isocyanate methyl isocyanate sodium monoxide none of these. 2 / 10Q.92 Which of the following is a secondary pollutant? PAN aerosol CO CO2 3 / 10Q.93 Which part of the world has a high density of organisms? deciduous forests tropical rain forests grasslands savannahs. 4 / 10Q.94 The maximum biomagnifications would be in which of the following in case of aquatic ecosystem? zooplankton phytoplanktons fishes birds 5 / 10Q.95 Which of the following is the use of lichens in case of pollution? they promote pollution lichens are not related with pollution they treat the polluted water they act as bioindicators of pollutions. 6 / 10Q.96 Land mass occupied by forest is about 30% 60% 11% 22%. 7 / 10Q 97 Which is the result of damage to relative biological effectiveness? high temperature pollution radiation low temperature 8 / 10Q.98 Which is the reason for highest biomass in aquatic ecosystem? nano plankton, blue green algae, green algae benthoic and brown algae sea grass, and slime moulds diatoms. 9 / 10Q.99 What is the best pH of the soil for cultivation of plants? 3.4 – 5.4 6.5 – 7.5 4.5 – 8.5 5.5 – 6.5. 10 / 10Q.100 What is B.O.D.? The amount of O2 utilized by organisms in water (b) The amount of O2 utilized by micro-organisms for decomposition (c) The total amount of P2 present in water (d) All of the above. The amount of O2 utilized by micro-organisms for decomposition The total amount of P2 present in water All of the above. Your score isThe average score is 46% LinkedIn Facebook Twitter VKontakte 0% Restart quiz
