Which of the following induces nitrogen fixation in soil?
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In water treatment plant, use of chloramines ensures __________
Which element is not a part of a nitrogenous base?
Myopia is a defect of eyes which is also known as
Which of the following glands is a source of the enzyme Ptyalin?
Who Invented Post-it note?
Ravuri Bharadhwaja won Jnanpith Award for work in which language?
If 4x2 - 12x + k is a perfect square, then the value of k is