Exfoliation is a type of:
Answer: C
Exfoliation is a form of physical weathering.
Repeated heating and cooling makes the outer layer of a rock expand and contract more than the interior, and successive shells peel away like the coats of an onion. It is common in deserts, where the daily temperature range is extreme, and no chemical change is involved.
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The Beas project, consisting of the Beas–Sutlej link and the Pong dam on the Beas, is a joint venture of
Answer: C
It is a joint venture of Punjab, Haryana and Rajasthan.
The Beas-Sutlej link diverts Beas water into the Sutlej above Bhakra, and the Pong dam at Talwara stores it. The three states share the cost and the water, as they do the Bhakra-Nangal project.
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What is the difference between the Indian Standard time and Greenwich Standard Time?
Answer: C
The difference is 5 hours 30 minutes.
Indian Standard Time is fixed by the 82°30′E meridian, and the earth turns 15° an hour, so \[\frac{82.5}{15} = 5.5\ \text{hours}\] The odd half hour follows from the choice of that meridian, roughly through the middle of a country spanning nearly 30 degrees of longitude.
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Which city lies in the basin of the Euphrates and the Tigris?
Answer: D
Baghdad lies in the Euphrates-Tigris basin.
The city stands on the Tigris, in the Mesopotamian plain between the two rivers - Mesopotamia means 'between the rivers'. The two actually join at Al-Qurnah in southern Iraq to form the Shatt al-Arab.
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The only zone in the country that produces gold is also rich in iron is
Answer: C
The southern zone produces gold and is also rich in iron.
Karnataka's Kolar and Hutti fields were long India's only source of gold, and the Bababudan and Bellary-Hospet ranges in the same state hold large iron ore deposits.
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Which of the following is known as the morning star?
Answer: D
Venus is the morning star.
Being closer to the sun than the earth, it never appears far from it, and is visible only for a few hours before sunrise or after sunset. It is then the brightest object in the sky after the sun and moon, which is why it is called both the morning and the evening star.
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The refineries at Mathura, Digboi and Panipat were set up by
Answer: A
They were set up by the Indian Oil Corporation.
IOC is the country's largest refiner. Digboi, taken over from Assam Oil, is the oldest refinery in India, dating from 1901; Mathura and Panipat serve the northern market.
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Which of the following countries leads in the production of aluminium and its products in the world?
Answer: D
The USA leads in aluminium and aluminium products.
Although the bauxite is mined elsewhere - Australia and Guinea are the largest sources - smelting needs enormous quantities of electricity, so it concentrates where power is cheap and industry can absorb the metal.
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The autumnal equinox occurs on:
Answer: B
The autumnal equinox falls on 23 September.
The sun is again overhead at the Equator, moving southward, and day and night are equal everywhere. It reaches the Tropic of Capricorn at the winter solstice on 22 December.
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The mountain building in Himalayas began
Answer: C
Both statements are true.
The Indian plate, drifting north after breaking from Gondwana, met the Eurasian plate roughly 45 to 50 million years ago. The sediments of the intervening Tethys Sea were crushed and folded upward, and the collision continues, which is why the Himalayas still rise by about a centimetre a year and the region is seismically active.
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