World Geography
The highest mountains in Africa, which is not part of any mountains chain, is

Mount Kilimanjaro
Mount Blanc
Mount Aconcagua
Mount Kosciusco

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

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

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