Practice Test


Q1) Which of the following is a biodegradable pollutant? Show Answer


Q2) Atmosphere of big/metropolitan cities is polluted most by Show Answer


Q3) The point of temperature inversion between troposphere and ionosphere is called Show Answer


Q4) Photochemical smog is formed in Show Answer


Q5) Which of the following is a sink for CO? Show Answer


Q6) Ozone hole refers to Show Answer


Q7) Fish die in water bodies polluted by sewage due to Show Answer


Q8) Addition of phosphate fertilizers into water leads to Show Answer


Q9) By green chemistry we mean Show Answer


Q10) Negative soil pollution is Show Answer


Q11) Poisonous gas present in the exhaust fumes of car is Show Answer


Q12) The green house effect is caused by Show Answer


Q13) About 20 km above the earth there is an ozone layer, which one of the following statements about ozone and ozone layer is true? Show Answer


Q14) Surface water contains Show Answer


Q15) Ozone is formed in the upper atmosphere from oxygen by the action of Show Answer


Q16) Incomplete combustion of petrol or diesel oil in automobile engines can be best detected by testing the fuel gases for the presence of Show Answer


Q17) Which one of the following regions of atmosphere contains ozone? Show Answer


Q18) Increased asthmatic attacks in certain seasons are related to Show Answer


Q19) Cyclone collector is used for minimizing Show Answer


Q20) Which of the following statement is false? Show Answer


Q21) Eutrophication causes reduction in Show Answer


Q22) Ozone hole is maximum over Show Answer


Q23) The region which is greatly affected by air pollution is Show Answer


Q24) Which of the statement is false? Show Answer


Q25) Which of the following is not regarded as a pollutant? Show Answer


Q26) The brown, hazy fumes of photochemical smog are due to Show Answer


Q27) Which of the following statement is false? Show Answer


Q28) BOD is connected with Show Answer


Q29) Which of the following is not a part of green chemistry? Show Answer


Q30) Carbon monoxide is harmful to human beings as it Show Answer


Q31) Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere? Show Answer


Q32) In Antarctica, ozone depletion is due to the formation of following compound? Show Answer


Q33) Ozone in stratosphere is depleted by Show Answer


Q34) Pick up the correct statement. Show Answer


Q35) Result of ozone hole is Show Answer


Q36) Photochemical smog is caused by Show Answer


Q37) Acid rains are produced by Show Answer


Q38) DDT is Show Answer


Q39) Increasing skin cancer and high mutation rate are due to Show Answer


Q40) As it passes into food chain, the concentration of DDT Show Answer


Q41) When rain is accompanied by a thunderstorm, the collected rain water will have a pH value Show Answer


Q42) The smog is essentially caused by presence of Show Answer


Q43) The major air pollutant is Show Answer


Q44) Ozone layer of stratosphere requires protection from indiscriminate use of Show Answer


Q45) Bhopal gas tragedy of 1984 was caused by Show Answer


Q46) Which compound is mainly responsible for the depletion of ozone layer? Show Answer


Q47) Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due to Show Answer


Q48) Among the following compounds, which one is not responsible for the depletion of ozone layer? Show Answer


Q49) Depletion of ozone layer is due to Show Answer


Q50) Which of the following is a living component of atmosphere? Show Answer


Q51) Chlorofluorocarbons (CFCs) are widely used in air conditioners, refrigerators etc because of being Show Answer


Q52) Which of the following is not a herbicide? Show Answer


Q53) Which of the following statements is false? Show Answer


Q54) The instrument used for measuring soil salinity is Show Answer


Q55) The ozone layer forms naturally by Show Answer


Q56) Identify the incorrect statement from the following. Show Answer


Q57) Depletion of ozone layer over Antarctica takes place Show Answer


Q58) Which one is the most toxic? Show Answer


Q59) Identify the wrong statements in the following. Show Answer


Q60) Pick up the correct statement Show Answer


Q61) Pneumoconiosis is caused by in halation of Show Answer


Q62) The water pollutants mainly responsible for the eutrophication are Show Answer


Q63) Pick out the correct statement? Show Answer


Q64) Gas released during Bhopal tragedy was Show Answer


Q65) Mesosphere and thermosphere are collectively known as Show Answer


Q66) The brown haze of photochemical smog is largely attributable to Show Answer


Q67) Which of the following is not an air pollutant? Show Answer


Q68) Select the incorrect statement. Show Answer


Q69) Methane gas producing field is Show Answer


Q70) The greatest affinity for haemoglobin is shown by Show Answer


Q71) Identify the wrong statement in the following Show Answer


Q72) Which of the following region is the coldest? Show Answer


Q73) Which of the following statements about control of particulate pollution is false? Show Answer


Q74) Identify the correct decreasing order of the following with respect to altitude from atmosphere.
I. Troposhere
II. Mesopshere
III. Thermosphere
Show Answer


Q75) Which of the following is secondary pollutant? Show Answer


Q76) The basic component of the smog is Show Answer


Q77) In Antarctica ozone depletion is due to the formation of following compound Show Answer


Q78) The term acid rain was coined by Show Answer


Q79) In which part of the atmosphere, ozone layer is present? Show Answer


Q80) Ozone layer is present in Show Answer


Q81) Temperature of troposphere decreases with altitude. This is because of Show Answer


Q82) The gas that is not considered as a ‘green house gas’ is Show Answer


Q83) Which of the following statements is not false? Show Answer


Q84) Among the following statements which one is incorrect? Show Answer


Q85) The number of ozone molecules converted into oxygen by one molecule of chlorofluorocarbon compound is Show Answer


Q86) Use of chlorofluoro carbons is not encouraged because Show Answer


Q87) An important product in the ozone depletion by chloroflurocarbons is Show Answer


Q88) Which of the following statements is not true? Show Answer


Q89) The photochemical smog can be suppressed by Show Answer


Q90) Ultraviolet light causes Show Answer


Q91) Which of the following acts as a sink for chlorine free radicals? Show Answer


Q92) Statement 1: Presently, the global atmosphere is warming up
Statement 2: The depletion of stratospheric ozone layer has resulted in increases in ultraviolet radiations reaching the earth
Show Answer


Q93) Statement 1: Water having pH<5.5 is not suitable for drinking purposes.
Statement 2: As the pH of water decreases, the solubility of metal ions increases.
Show Answer


Q94) Statement 1: Photochemical smog is produced by nitrogen oxides
Statement 2: Vehicular pollution is a major source of nitrogen oxides
Show Answer


Q95) Statement 1: Suspended particulate matter (SPM)is an important pollutant released by diesel vehicles.
Statement 2: Catalytic converters greatly reduce pollution caused by automobiles.
Show Answer


Q96) Statement 1: Presently the global atmosphere is warming up.
Statement 2: The depletion of stratospheric ozone layer has resulted in increase in ultraviolet radiations reaching the earth.
Show Answer


Q97) Statement 1: Carbon monoxide combines with haemoglobin.
Statement 2: CO has more affinity for haemoglobin.
Show Answer


Q98) Statement 1: Acid rain has a pH less than 5
Statement 2: Oxides of nitrogen and sulphur combine with rain water to produce acidic nature

Show Answer