Revision Series | Science | General Science| 74

Answer- D

Chipko Movement

The Chipko Movement took place in the Chamoli district of the Garhwal division of Uttarakhand in April 1973.

• Chipko Movement is among one of the most famous Environmental Movements in India.
• It was a type of non-violent protest based on Gandhian Ideology.
• The prominent leaders of the Chipko Andolan were Chandi Prasad Bhatt, Sunderlal Bhauguna, Gaura Devi, Suraksha Devi, Sudesha Devi, Bachni Deviand others.
• Both men and women participated in this protest in very large numbers.
• The primary reason behind this movement was excess deforestation, which resulted in the disastrous Alaknanda River floods of July 1970
  • The success of the Chipko Movement led to the formulation of various environmental policies and laws in India.
  • The Forest Conservation Act of 1980 and the National Forest Policy of 1988 are the results of chipko movement.

Answer- A

• Non-renewable sources of energy:
• These sources of energy are exhaustible and cannot be replaced once they have been used.
• These sources have been accumulated in nature over a very long period of millions of years.
• Examples of Non-renewable Sources of Energy :
• Coal
• Oil
• Natural gas
• All these fuels are called fossil fuels.

Answer- B

The pH of normal rainwater is 5.6. When it drops below 5.6, the rain is termed as acid rain.

The main causes of acid rain are the presence of high levels of oxides of sulphur and nitrogen in the air.

This acid rain contains sulphuric acid which reacts with the calcium present in the white marble.

This results in damage to this wonderful white monument

Answer- A

Answer- A

Answer- A

• Photochemical smog – Photochemical smog is formed when sunlight reacts with the mixture of pollutants nitrogen oxides (NO ) and volatile organic compounds (VOCs) creating a brown haze.
• It is also called Los Angeles smog.
• It is also referred to as oxidizing smog. This kind of smog requires neither smoke nor fog.

Answer- B

It is caused by nitrate contamination in groundwater resulting in decreased oxygen carrying capacity of haemoglobin in babies leading to death.

Answer- B

A biodiversity hotspot is a biogeographic region with significant levels of biodiversity that is threatened by human habitation.

The biodiversity hot spot concept was put forth by Norman Myers in 1988.

Answer- D

Answer- B

• Artificial rain is created by seeding clouds with Silver Iodide.
• Seeding of Clouds refers to the process of making precipitation fall using substances like dry ice, and silver iodide.
• Cloud seeding chemicals include silver iodide, potassium iodide and dry ice.
• Cloud seeding is an artificial way to create moisture in the clouds so as to cause rainfall.