Q. The luminous coloured ring, surrounding the sun is called the

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Q. The longest ship canal in the world is the

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Q. The major geological events of the Palaeozoic era include

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Q. The major events of Pre-Cambrian era include

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Q. The meridian passing through London is called the

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Q. The most recent era of the geological time scale is

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Q. The low heating capacity of which of the types of coal reduces its value as an industrial fuel?

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Q. The most important factor that is affecting all the chemical weathering processes is

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Q. The longest river in the Common wealth of independent states is the

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Q. The monsoon climatic regions are

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Q. The main vegetation of the steppe type climatic regions is

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Q. The minerals of sulphide group are

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Q. The major crude oil markets are the

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Q. The most important force that provide resistance to particles towards entertainment is

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Q. The metamorphism which involves the chemical replacement of elements in rock minerals when gases and liquids permute into bedrock is called

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Q. The magnetosphere becomes unstable during the magnetic storms during a period of

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Q. The major cause of species extinction is

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Q. The major crops found in Sudan are

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Q. The most pleasant elements i.e. summer temperatures rarely above 40º and winters are fairly mild, occur in the

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Q. The movement of particles by rolling, sliding and shuffling along the eroded surface is called

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