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Answer 1

Answer:

1 Ans. Sanskrit

Rigveda, (Sanskrit: “The Knowledge of Verses”) also spelled Ṛgveda, the oldest of the sacred books of Hinduism, composed in an ancient form of Sanskrit about 1500 bce, in what is now the Punjab region of India and Pakistan.

2 Ans.  

Requirements for successful rainwater harvesting in cities

Indian cities are in dire need of more water, and rainwater harvesting (RWH) can significantly contribute towards meeting this essential requirement. Despite government push, the growth of RWH sector has been slow. In this article, the author argues that practical problems with RWH systems must be solved for growth of the sector and greater utilisation of rainwater.

3 Ans. Earth's rotation is the rotation of planet Earth around its own axis. Earth rotates eastward, in prograde motion. As viewed from the north pole star Polaris, Earth turns counterclockwise.

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