World Geography
The light of distant stars is affected by

both (a) and (b)
the earth's atmosphere
interstellar dust
None of these

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World Geography
Which among the following statements is/are correct about Petroleum?Petroleum is an inflammable mixture of oily hydrocarbons.Most of the oil comes from synclines rather than anticlines.Select the correct code from the options given below:

Only 1
Only 2
Both 1 & 2
Neither 1 & 2

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