Any wind blowing down the slope of a mountain is called
Answer: B
It is called a katabatic wind.
Air on the slope cools at night, becomes denser than the air at the same level over the valley, and flows downhill under gravity. The reverse daytime flow up the slope is the anabatic wind. Antarctica produces the strongest katabatic winds on earth.
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Ken, Betwa and Chambal are the rivers which merge with:
Answer: B
They all merge with the Yamuna.
The Chambal, Betwa and Ken all rise on the northern slopes of the Vindhyas and flow north across the Malwa plateau and Bundelkhand to join the Yamuna, which itself joins the Ganga at Prayagraj.
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Ninety-nine per cent of the mass of the earth’s atmosphere is confined to a height of
Answer: B
Ninety-nine per cent of the atmosphere's mass lies within 32 km of the surface.
Air is compressible, so it is densest at the bottom: about half the total mass lies below 5.5 km. The atmosphere has no sharp upper limit, thinning gradually into space beyond 10,000 km.
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The circulation of soluble inorganic nutrients from the sedimentary and atmospheric reservoirs through the living components of an ecosystem and back again is called
Answer: B
These are the biogeochemical cycles.
Carbon, nitrogen, phosphorus, sulphur and water all move repeatedly between the living and the non-living parts of an ecosystem. Those with a gaseous reservoir, like carbon and nitrogen, cycle relatively quickly; those with a sedimentary reservoir, like phosphorus, cycle very slowly.
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The Deccan Plateau is composed largely of which rock?
Answer: C
Correct answer: Basalt
The northwestern Deccan is built of basalt, laid down as vast lava flows about 66 million years ago. The formation is known as the Deccan Traps, from the Swedish for step, because erosion leaves the successive flows as a stepped landscape. The eruptions were among the largest in Earth’s history, covering perhaps half a million square kilometres to a depth of two kilometres in places, and their timing close to the Cretaceous extinction has made them a serious rival to the asteroid impact as a cause of it. Weathering of this basalt produces the black cotton soil, or regur, that covers Maharashtra, Madhya Pradesh and parts of Gujarat and Karnataka - clay-rich, moisture-retentive, and suited to cotton without irrigation. The southern and eastern parts of the plateau are older crystalline rock, chiefly granite and gneiss, which weathers instead into red soil. The plateau tilts gently eastward, which is why its rivers flow to the Bay of Bengal.
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Which of the following drainage systems fall into Bay of Bengal?
Answer: D
Both groups drain into the Bay of Bengal.
The Ganga, Brahmaputra, Godavari, Mahanadi, Krishna and Cauvery all flow east. The Luni, Narmada and Tapti flow west - the Luni into the Rann of Kutch and the other two into the Arabian Sea.
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Which of these Indian states produces the most coffee?
Answer: C
Correct answer: Karnataka
Karnataka produces about seventy per cent of India’s coffee, chiefly in the districts of Kodagu, Chikkamagaluru and Hassan on the Western Ghats. Kerala is second and Tamil Nadu third; the three together account for almost the entire crop. Coffee needs a warm, humid climate, well-distributed rainfall of 150 to 250 cm, shade, and well-drained slopes at moderate altitude - conditions the Western Ghats supply exactly. India grows both arabica, which is grown higher, is more delicate and fetches more, and robusta, which is hardier, higher in caffeine and now the larger part of the crop. Indian coffee is distinctive for being shade-grown under a canopy of native trees, which supports considerable biodiversity within the plantations. Monsooned Malabar, exposed to the monsoon winds after harvest, is a recognised speciality. Most of the crop is exported. Coffee was introduced to Chikkamagaluru in the seventeenth century, and Assam is a tea state rather than a coffee one.
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Which state has the highest population density in India?
Answer: C
Correct answer: Bihar
Bihar has the highest population density of any Indian state, above 1,100 persons per square kilometre, followed by West Bengal, Kerala and Uttar Pradesh. Density and total population are different measures, and the question turns on that. Uttar Pradesh has by far the largest population but a much larger area, so its density is lower. Bihar is densely settled because its fertile Gangetic alluvium supports intensive agriculture on a comparatively small area, and because it lost its mineral-rich southern districts to Jharkhand in 2000. Among all units of the country the National Capital Territory of Delhi is far denser than any state, being essentially a city. The least dense state is Arunachal Pradesh, at around 17 persons per square kilometre, with mountainous terrain and forest cover accounting for it. India’s national figure is about 382 persons per square kilometre, several times the world average of roughly 60.
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The second most important agro based industry of India after textiles is:
Answer: D
The sugar industry is India's second largest agro-based industry after textiles.
India is the world's largest consumer of sugar and vies with Brazil as the largest producer. The mills are concentrated in Uttar Pradesh and Maharashtra, and being seasonal they run only during the crushing months.
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World Environment Day is observed on:
Answer: C
World Environment Day is observed on 5 June.
It was established by the United Nations in 1972, the year of the Stockholm Conference on the Human Environment, and has been marked since 1974. A different country hosts it each year.
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