The crude Birth Rate is defined as:
Answer: D
The crude birth rate is the number of births per thousand population in a year.
It is called crude because it takes no account of the age or sex composition of the population, which is why two countries with the same fertility can show different crude rates. India's is now around 19 per thousand.
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The Himalayas were uplifted from the:
Answer: D
The Himalayas were uplifted from the Tethys geosyncline.
The Tethys was the sea between the drifting Indian plate and Eurasia. As the two converged, the thick sediments accumulated on its floor were compressed and folded upward, which is why marine fossils are found near the summits.
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In India the percentage of population below poverty line is:
Answer: A
Less than 30 per cent of India's population is below the poverty line.
The Tendulkar estimate put it at 21.9 per cent in 2011-12, down from 37.2 per cent in 2004-05. The figure depends heavily on where the line is drawn, which is why successive committees - Lakdawala, Tendulkar, Rangarajan - have produced different numbers.
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Sundarban was declared a World Heritage Site because of its:
Answer: B
For its mangrove forests and biodiversity.
The Sundarbans were inscribed in 1987 as the largest mangrove forest in the world and the only one supporting a tiger population. The delta setting matters, but it is the mangrove ecosystem and its species that earned the listing.
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Greenhouse gases trap the heat of
Answer: C
Greenhouse gases trap thermal radiation.
Short-wave sunlight passes through the atmosphere almost unhindered and warms the ground. The ground re-radiates that energy as long-wave infrared, and carbon dioxide, methane and water vapour absorb it and re-emit it in all directions, including downward. The gases are transparent to the incoming radiation and opaque to the outgoing.
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Cotton in India grows best on:
Answer: A
Cotton grows best on black soil.
Regur, the black cotton soil of the Deccan lava country, is clayey and holds moisture well, so the crop survives long dry spells. It is also rich in lime, magnesia and potash, though poor in nitrogen and phosphorus.
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Lignite is a type of:
Answer: C
Lignite is a type of coal.
It is brown coal, the lowest rank, with 60–70 per cent carbon and a high moisture content, formed from peat under moderate pressure. Neyveli in Tamil Nadu holds India's largest deposit. Anthracite, at over 90 per cent carbon, is the highest rank.
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One horned rhinoceros is found in the states of:
Answer: B
The one-horned rhinoceros is found in West Bengal and Assam.
Kaziranga in Assam holds about two-thirds of the world population, with Pobitora, Orang and Manas nearby, and Jaldapara and Gorumara in north Bengal. The species was down to a few hundred a century ago and has recovered past 3,500.
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Which plateau lies between the Aravalli and the Vindhya ranges?
Answer: A
The Malwa plateau lies between them.
It occupies western Madhya Pradesh and south-eastern Rajasthan, bounded by the Aravallis to the north-west and the Vindhyas to the south. Built of Deccan lava, it is drained north by the Chambal and Betwa into the Yamuna.
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Green Index has been developed by:
Answer: C
The Green Index was developed by the United Nations Environment Programme.
It measures environmental performance by adjusting economic indicators for the depletion of natural resources and the cost of pollution, so that growth achieved by running down natural capital is not counted as gain.
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