Which of the following is the treatment of water pollution?
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Longest day in the Northern hemisphere is ________.
At which of the following place, weight of an object is maximum?
What is the source of natural energy of the hot springs at Manikaran in Himachal Pradesh ?
Stars twinkle but planets do not twinkle because
_________ is an example of intrusive igneous rock.
Azadirachata indica is the scientific name of
In terms of size, Mars ranks no. ___ in our Solar System.