1. What causes air pressure? North-Density 2. Atmospheric pressure is measured by North-Barometer 3. How many cells are there in the amoeba? Answer : One 4. When did Nagaland become the duly ruled state of India? Answer – 1963 A 5. The North East Marginal Railway has the largest railway station- North -Maligaon 6. Who appoints the Chief Minister? North - Governor 7. What gas is used in the refrigerator? North - Freion 8. Electron's search is Answer - J. J. Thomson 9. Who was the author of the first book printed in Assamese? North -Soulram Sharma 10. Which country's national anthem was written by Rabindranath Tagore in addition to the national anthem of India? North - Bangla Country Also Read: Recruitment for 42 Professors, Deputy Librarian and other posts at RSV Tirupati Recruitment for Deputy Secretary and other posts at Academy of Fine Arts, New Delhi