Daily Quiz: UPSC Prelims Marathon – March 8, 2019

Organic farming is the form of agriculture that relies on techniques such as crop rotation, green manure, compost and biological pest control to maintain soil productivity and control pests on a farm. Organic farming uses bio pesticides, bio fertilizers, organic manures etc. But excludes or strictly limits the use of chemical fertilizers, pesticides like herbicides, insecticides and fungicides. That’s why organic farming is eco friendly.

Biochemical oxygen demand is a measure of effluent strength in terms of the amount of dissolved oxygen utilized by microorganisms during the oxidation of organic components in the effluent. Polluted water has high Bod. i.e. less amount of oxygen is dissolving in it.

Phumdis are a series of floating islands, exclusive to the Loktak Lake in Manipur state, in northeastern India. They cover a substantial part of the lake area and are heterogeneous masses of vegetation, soil and organic matter, in different stages of decay.

Hydrogen has highest fuel value (150 KJ/g and is least harmful to the environment among fuels, while Coal, Diesel and Kerosene on combustion releases CO2, SO2 and other Nitroge oxides causes environmental pollution.

A carbon credit is a generic term for any tradable certificate or permit representing the right to emit one tonne of carbon dioxide or the mass of another greenhouse gas with a carbon dioxide. Carbon credits and carbon markets are a component of national and international attempts to mitigate the growth in consternation of green house gases (GHGs) one carbon credits is equal to one metric tonne of carbon dioxide, or in some markets , carbon dioxide equivalent gases . carbon trading approach the goal is to allow market mechanisms to drive industrial and commercial processes in the direction of low emission or less carbon intensive approaches than those used when there is no cost Emitting Carbon Dioxide and other GHGs into the atmosphere

The great barrier reef is the largest coral reef. It is situated along the west coast of Queensland state of Australia and northern eastern coast of Australia. This reef is protected as marine park.

Chilka lake is situated to the south-west of Mahanadi delta. It is enclosed by the sand pit, has an opening which permits sea connection It is largest brackish water lake in Asia. Pulicat lake is situated on the southern border of Andhra Pradesh. Periyar lake is an inland lake located near the border of Kerala and Tamil Nadu Ashtamudi Lake is a freshwater lake in the Kollam district of Kerala.