Geography 2016 Flashcards
(14 cards)
Why does the Government of India promote the use of ‘Neem-coated Urea’ in agriculture?
Neem coating slows down the rate of dissolution of urea in the soil
Neem-coated urea improves nitrogen use efficiency and reduces nitrogen loss during volatilisation.
What percentage of nitrogen present in the area is utilized by crops when ordinary urea is applied?
30-40 percent
The rest gets degraded in various stages.
What is the process called when ordinary urea gets converted to ammonia gas?
Ammonia volatilisation
About 8-10 percent of nitrogen is lost during this process.
What are the benefits of Neem-coated Urea?
- Slows down the release of nitrogen
- Prevents caking of urea
- Reduces chances of powder formation during transportation
- Controls insect-pests and wild animals
Increases nitrogen use efficiency and crop yield.
What are the advantages of practicing drip irrigation?
- Reduction in weed
- Reduction in soil erosion
Drip irrigation applies small amounts of water directly to the roots of plants.
What is drip irrigation sometimes called?
Trickle irrigation
It involves dripping water onto the soil at very low rates.
What is the increase in yield reported with drip irrigation?
Up to 230 percent
Drip irrigation saves water up to 70% compared to flood irrigation.
Which basins in India are identified as potentially shale gas bearing?
- Cambay
- Assam-Arakan
- Gondwana
- Krishna-Godavari
- Kaveri
- Indo-Gangetic plain
Shale gas is trapped under low permeable rocks.
What is shale oil?
Unconventional oil produced from oil shale rock fragments by pyrolysis, hydrogenation, or thermal dissolution
These processes convert kerogen into synthetic oil and gas.
Which country is among the largest shale oil producers in the world?
Russia and the US
The US has turned from an importer to a net exporter of crude oil due to shale oil production.
What is required for the production of one tonne of steel?
0.8 tonnes of coking coal
Coking coal is the only import required for steel production; saltpetre and rock phosphate are not used.
Which of the following rivers are tributaries of Brahmaputra?
- Dibang
- Kameng
- Lohit
The Brahmaputra is known as Yarlung Tsangpo in Tibet.
What is the correct statement regarding Red Sanders?
It is a tree species found in a part of South India
Red Sanders is endemic to the southern Eastern Ghats mountain range.
Which of the following pairs are correctly matched?
Khajuraho: Bundelkhand and Tirupati: Rayalaseema
Khajuraho is famous for monuments built between 950-1050 CE.
