Chapter Chosen

Environmental Issues

Book Chosen

Biology

Subject Chosen

Biology

Book Store

Download books and chapters from book store.
Currently only available for.
CBSE Gujarat Board Haryana Board

Previous Year Papers

Download the PDF Question Papers Free for off line practice and view the Solutions online.
Currently only available for.
Class 10 Class 12

World summit on sustainable development (2002) was held in 

  • Brazil

  • Sweden

  • Argentina

  • South Africa


D.

South Africa

In 1992 world leaders convened an Earth Summit in Rio de Janeiro,Brazil, in search of international agreements that could help save the world from pollution, poverty and the waste or resource.Another earth summit was convened from 26 August to 4 September a 2002 in Johannesburg, South Africa. Negotiators for 191 countries agreed on an  action plan to alleviate poverty and conserve the natural resource of earth.

In 1992 world leaders convened an Earth Summit in Rio de Janeiro,Brazil, in search of international agreements that could help save the world from pollution, poverty and the waste or resource.Another earth summit was convened from 26 August to 4 September a 2002 in Johannesburg, South Africa. Negotiators for 191 countries agreed on an  action plan to alleviate poverty and conserve the natural resource of earth.

269 Views

The meaning of BOD is :
  • Bacterial oxygen demand
  • Biological optimum density
  • Biochemical oxygen demand
  • Bioorganisation decay

C.

Biochemical oxygen demand
687 Views

Which of the following pollutants is not produced by exhaust of motor vehicles ?
  • CO
  • Hydrocarbon
  • Fly-ash
  • NO

C.

Fly-ash
711 Views

What is the term for the inflammation of cornea due to high absorption of UV-B radiation :
  • myopia
  • snow blindness
  • biomagnification
  • None of the above

B.

snow blindness
695 Views

In the scrubber in the electrostatic precipitator the gases are passed through :
  • filter
  • lime
  • spray of water
  • both 2 and 3

D.

both 2 and 3
997 Views

Ozone depletion will cause :
  • Forest fire
  • Pneumonia
  • Increased incidence of skin cancer
  • None of these

C.

Increased incidence of skin cancer
560 Views