Q5 of 60 Page 1

Why management of natural resources requires a long term perspective?

The proper management of natural resources takes into consideration a long-term perspective so that these natural resources are used judiciously at present and their exploitation. This is essential to make their availability for the coming generations. Thus a sustainable and planned usage of resources should be done.


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4

Write two differences between binary fission and multiple fission in a tabular form.

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Why do we need to manage our resources carefully?

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List four measures that can be taken to conserve forests.

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Na, Mg and AI are the elements of the same period of Modern Periodic Table having one, two and three valence electrons respectively. Which of these elements

(i) has the largest atomic radius,


(ii) is least reactive? Justify your answer stating reason for each case.