Asked/Added Questions From NCERT:

Question 1. Asked on :03 September 2019:03:15:35 PM

 Name the sources and effects of marine pollution. Sources:

-Added by Nishant Verma General Knowledge » Envirnment


Akki chauhan

Dumping the waste, oil pollution and shipment.

Effects: The continuous oil films inhibit photosynthesis and absorption of oxygen. This inhibits the growth of plankton. All aquatic animals depend either directly indirectly on plankton, which is the basis of the tropic chain.

-Answered by Akki chauhan On 04 September 2019:10:49:45 AM

Question 2. Asked on :03 September 2019:03:15:01 PM

 What is meant by BOD and COD? 

-Added by Nishant Verma General Knowledge » Envirnment


Nishant Verma

BOD: BOD is the amount of oxygen required for the biological decomposition of organic matter present in the water.

COD: COD is the amount of oxygen required f chemical oxidation of organic matter using oxidizing agent.

-Answered by Nishant Verma On 03 September 2019:03:17:23 PM

Question 3. Asked on :03 September 2019:03:13:54 PM

  Suggest four important sources of air pollution.

-Added by Nishant Verma General Knowledge » Envirnment


priyanshu kumar
Environmental Pollution is defined as any undesirable change in the physical, chemical, or biological characteristics of any component of the environment (air,water,soil)which can cause harmful effects on various forms of property.

-Answered by priyanshu kumar On 13 October 2019:10:05:40 AM

Question 4. Asked on :03 September 2019:03:09:41 PM

Define Environmental Pollution.

-Added by Nishant Verma General Knowledge » Envirnment


priyanshu kumar
The sources of air pollution are volcanic eruptions, fest fires, biological decay, thermal power plants, vehicular emissions etc.,

-Answered by priyanshu kumar On 13 October 2019:10:05:50 AM


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