Which of the following is not a principal tool of early Stone age? 

Who is known as lok nayak ?

Which among the following chronology is correct regarding four 'samvatas’ ? 

Mahatma Gandhi was first arrested during ' Satyagraha' in the year

Which is the correct chronological order of following ' Acharyas? 

Who among the following from the first cabinet of independent India was responsible for mass religious conversion?