421. By whom was the Sarak-i-Azam which ran from the Indus to Sonargaon (in Bangladesh) built?
Sher Shah
422. Who introduced State Transport Services in Travancore?
Sri Chitra Thirunal.
423. Which element does not show variable oxidation states?
Zinc
424. The year and place in which Pakistan carried out five nuclear tests is?
On 28 and 30 may 1998 in the desert of Baluchistan at the Chagai Hills
425. Who founded the ‘East India Association’?
Dadabhai Naoroji
426. Which French king came to be known as the 'Citizen King'?
Louise Phillippe; Emperor of France from 1830 - 1848 AD
427. Who invented the Spinnng Jenny in 1764?
James Hargreaves
428. Which worm reach into intestine of human by eating leaf?
Tape worm
429. Who is the author of “Randidangazhi”?
Thakazhi Siva Sankara Pillai
430. Who is the author of “My Experiments With Truth”?
Mahatma Gandhi