Who among the following was a contemporary of Gautam Buddha?
Who among the following was the author of Tarikh-i-Alai, which contains the details of the first few years of Sultan Alauddin Khilji?
Which one of the following processes takes place in lakes during eutrophication?
The natural dye present in turmeric is known as
Which one of the following is the difference in local time between the places located at 165oEast and 165o West?
Which of the following is not correctly matched?