Which of the following crops needs maximum water per hectare?
Answer: C
Sugarcane needs the most water per hectare.
It requires roughly 1,500 to 2,500 mm over a growing season of ten to eighteen months, several times what wheat or barley need. This is why sugarcane in the water-scarce parts of Maharashtra and Karnataka is so contentious.
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Pykara hydroelectric power project is located at:
Answer: C
It is on the Pykara river.
The Pykara rises in the Nilgiris in Tamil Nadu and drops sharply over the Pykara falls; the scheme, commissioned in 1932, was among the earliest hydroelectric projects in south India.
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Temperate grasslands of Eurasia are called:
Answer: C
They are called the steppes.
The name applies to the temperate grasslands stretching from Ukraine across southern Russia into Central Asia. The same formation is called prairie in North America, pampas in Argentina, veld in South Africa and downs in Australia.
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The gas which is largely responsible for green house effect is:
Answer: B
Carbon dioxide is chiefly responsible for the enhanced greenhouse effect.
Water vapour absorbs more infrared in total, but its concentration is set by temperature rather than by human activity. Carbon dioxide from burning fossil fuels is the gas that is rising, long-lived, and driving the change; methane is more potent per molecule but far scarcer.
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A large natural ecosystem made up of the abiotic components of a habitat - land, air, water and soil - together with the living community adapted to them is called a
Answer: D
Such a system is a biome.
A biome is a large regional ecosystem defined by its dominant vegetation and the climate that supports it - tropical rain forest, savanna, temperate grassland, taiga, tundra, desert. Each has its characteristic community of plants and animals adapted to those conditions.
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The pennines (Europe), Appalachians (America) and the Aravallis (India) are examples of
Answer: A
They are examples of old mountains.
All three are ancient fold ranges - Palaeozoic or Precambrian - long since worn down by erosion to rounded, low relief. The Aravallis, once as high as the Himalayas, now rise little above 1,700 m. Young mountains such as the Himalayas and Alps are still sharp and rising.
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The only state in India that produces saffron is
Answer: C
Saffron is grown only in Jammu and Kashmir.
The Pampore karewas near Srinagar are almost the only Indian source. Saffron is the dried stigma of Crocus sativus, and each flower yields three, so about 150,000 flowers make a kilogram - which is why it is the most expensive spice in the world.
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Willandra Lakes Region-a Unesco Heritage site is located in:
Answer: B
The Willandra Lakes Region is in Australia.
It lies in New South Wales and was inscribed by UNESCO in 1981 for both natural and cultural value. Mungo Man and Mungo Lady were found there, human remains dated to about 40,000 years, among the oldest evidence of ritual burial and cremation anywhere.
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Paulo Alfonso hydroelectric power plant is located in:
Answer: C
Paulo Afonso is in Brazil.
The plant harnesses the falls of the São Francisco river in Bahia and is the principal source of power for the country's north-east.
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The Naharkatiya oil field is located in:
Answer: C
The Naharkatiya oil field is in Assam.
It lies in Dibrugarh district and was discovered in 1953, the first major find after independence. Its crude is piped to the refineries at Noonmati, Barauni and Digboi.
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