11. From which one among the following water sources; the water is likely to be contaminated with fluoride?
Ground water
12. Peru was discovered by ?
Francisco Pizzaro
13. In which state is Jog Falls located?
Karnataka
14. The treaty of surrender of Japan was signed in a ship named?
USS Missourie in the Bay of Tokyo
15. In human beings; What is the opening of the stomach into the small Intestine called?
Pylorus
16. A girl ate sweets while fanning the flies away. Due to this; she suffered from a which disease?
Cholera
17. Cotton; jute; silk; wool; etc are natural fibres while _______is a an artificial fibre?
Nylon
18. Planet Nearest (to the Sun)?
Mercury
19. The economic and political reforms started by Gorbachev in 1985 was known as ?
Peristroika' means restructuring
20. Which pair of metals constitutes the lightest metal and the heaviest metal, respectively?
Lithium and osmium