The constitution of India was framed by:
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Who was the first Deputy Speaker of Lok Sabha?
A drainage pattern where a river is joined by its tributaries approximately at right angles is ____________
Which of the following is a characteristic of an exothermic reaction?
Which of the following elements were not found in the form of archaeological remains from Kalibanga?
cos(A+B) + cos(A-B) is equal to
Who invented the Band-aid?