world economic industry trade agriculture section 8 MCQ Questions & Answers Detailed Explanation

Answer: (a)

Petroleum is a fossil fuel derived from ancient fossilized organic materials, such as zooplankton and algae. Vast quantities of these remains settled to sea or lake bottoms, mixing with sediments and being buried under anoxic conditions.

As further layers settled to the sea or lake bed, intense heat and pressure build up in the lower regions.

Answer: (c)

Numerous grape varieties are cultivated in France including both internationally well-known and obscure local varieties.

Hence, the Southern part of France is famous for the winemaking industry.

Answer: (c)

Answer: (c)

Lignite is low-grade brown coal, which is soft with high moisture content. The principal lignite reserves are in Neyveli in Tamil Nadu and are used for the generation of electricity. Bituminous coal is buried deep and subjected to increased temperatures.

It is the most popular coal in commercial use. Metallurgical coal is high-grade bituminous coal, which has a special value for smelting iron in blast furnaces. Anthracite is the highest quality hard coal.

Answer: (c)

Uranium mining is the process of extraction of uranium ore from the ground. The worldwide production of uranium in 2009 amounted to 50,572 tonnes.

Kazakhstan, Canada, and Australia are the top three producers and together account for 63% of world uranium production. Other important uranium producing countries in excess of 1000 tonnes per year are Namibia, Russia, Niger, Uzbekistan, and the United States.

Canada was the world’s largest uranium producer for many years, accounting for about 22% of world output, but in 2009 was overtaken by Kazakhstan. Production comes mainly from the McArthur River mine in northern Saskatchewan province, which is the largest in the world.

Answer: (b)