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Which one of the following statements is...

Which one of the following statements is not true?

A

Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant

B

pH of drinking water should be between 5.5-9.5

C

Concentration of DO below 6 ppm is good for the growth of fish

D

Clean water would have a BOD value of less than 5 ppm

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AAKASH INSTITUTE ENGLISH-ENVIRONMENTAL CHEMISTRY-ASSIGNMENT (SECTION-B)
  1. Which one of the following statements regarding photochemical smog is ...

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  2. About 20 m above the earth, there is an ozone layer. Which one of the ...

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  3. Which one of the following is responsible for depletion of the ozone l...

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  4. Which one of the following statements is not true?

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  5. Which of the following is not caused due to SO(2)?

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  6. Which of the following has not adverse effect on human health?

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  7. Which of the following is not a greenhouse gas?

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  8. At which of the following pH, rain is called as acid rain?

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  9. Which of the following is Freon-11?

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  10. At which of the following concentration of sulphate it will have a lax...

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  11. Measurement of dissolved oxygen that would be needed by the microorgan...

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  12. Which of the following is herbicide?

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  13. Which of the following is the correct match?

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  14. Which group correctly represent the photochemical smog produced during...

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  15. Freons which cause damage to ozone layer are

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  16. Ozone depletion over Antarctica is maximum in the month of

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  17. Heat pollution affects mainly

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  18. Bhopal gas tragedy was caused by

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  19. What is the name of chlorine containing antibiotic?

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  20. How much percentage of air by mass is present in troposphere?

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