World Geography
The time interval from when the given star passes directly overhead to when it next passed directly overhead, is defined as

one solar day
both the terms are similar, so any of these may be used
None of these
one sidereal day

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World Geography
Which among the following region has the highest density of rail network?

Eastern Asia
Western Europe
North America
South east Asia

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World Geography
The main objective of multi-purpose river projects are

extension of irrigation facilities by constructing dams to store surplus water during the rainy seas
All of these
power generation by constructing hydro power stations
flood controls and making rivers navigable

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