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NARAYNA-ENVIRONMENTAL CHEMISTRY-EXCERCISE - IV ( NCERT EXEMPLAR QUESTIONS) ( MULTIPLE CHOICE QUESTINOS)(TYPE-I)
- Which of the following gases is not a greenhouse gas?
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- Photochemical smog occurs in warm, dry and sunny climate, One of the f...
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- Which of the following statement is not true about classical smog?
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- Biochemical oxygen demand (BOD) is a measure of organic meterial prese...
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- Which of the following statements is wrong ?
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- Sewage containing organic waste should not be disposed in water bodies...
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- Which of the following statements about photochemical smog is wrong ?
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- The gaseous envelope around the earth is known ias atmosphere. The low...
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- Dinitrogen and dioxygen are main constituents of air but these do not ...
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- The pollutants which come directly in the air from sources are called...
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- Which of the following statements is correct ?
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- Which of the following practices will not come under green chemistry a...
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