Tag: nitrogen and phosphorus cycles

Questions Related to nitrogen and phosphorus cycles

Natural sources of sulfur dioxide involves:

biology ecosystem : structure and function biogeochemical cycles - sedimentary biogeochemical cycle nitrogen and phosphorus cycles

  1. Respiration

  2. Cement production

  3. PAN

  4. Volcanic eruptions

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Correct Option: D

Which statement is not correct?

biology ecosystem : structure and function biogeochemical cycles - sedimentary biogeochemical cycle nitrogen and phosphorus cycles

  1. Humification is followed by mineralization

  2. Low temperature and anaeobiosis accelerate decomposition

  3. The decomposition is slow if the detritus is rich in lignin and chitin

  4. Humus is highly resistance to microbial action

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Correct Option: A

Which one of the following pairs is not correctly matched?

biology ecosystem : structure and function biogeochemical cycles - sedimentary biogeochemical cycle nitrogen and phosphorus cycles

  1. Production of sulphur dioxide - Burning of coal

  2. Depletion of ozone layer - Release of chlorofluorocarbons in the atmosphere

  3. Eutrophication - Increase in nitrogen and phosphorus contents in aquatic bodies

  4. Dec:ease in B.O.D. of pond water - Increase in global temperature

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Correct Option: A

Which gas is known as rotten egg smell?

biology ecosystem : structure and function biogeochemical cycles - sedimentary biogeochemical cycle nitrogen and phosphorus cycles

  1. $H _{2}S$

  2. $CO _{2}$

  3. $O _{2}$

  4. Argon

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Correct Option: A

Which gas is produced by reduction of sulphur?

biology ecosystem : structure and function biogeochemical cycles - sedimentary biogeochemical cycle nitrogen and phosphorus cycles

  1. $CO$

  2. $CO _{2}$

  3. $H _{2}S$

  4. $Nox$

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Correct Option: C