World Geography
The main properties of cosmic ray particles are

All of these are its properties
its energy
its rest mass
its electric charge

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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
flood controls and making rivers navigable
power generation by constructing hydro power stations
All of these

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World Geography
Which among the following statements is/are correct about Population of the world?In the twentieth century itself the population has increased four times.Human population increased more than ten times in the past 500 hundred years.World population exploded in the eighteenth century after the Industrial Revolution.Select the correct code from the options given below:

Only 2 & 3
Only 1
1, 2 & 3
Only 3

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