1. Operation Desert Shield was launched by US to defend Saudi Arabia in the year______: 1990
2. Suez Canal was nationalized by Egypt in______: July 1956
3. International Peace Day is celebrated since______: 1982
4. Martin Luther King Jr. was assassinated in the age of______: 39 years
5. Operation Enduring Freedom was launched by US in______: Afghanistan
6. Ozone layer restricts______: Ultraviolet rays
7. World Water Day is celebrated every year on______: 22 March
8. Ecology deals with______: Environment
9. For water purification Alum is used to remove______: Mud particles
10. Metal used to galvanize iron is called______: Zinc
11. Book of kings commonly known as “Shahnama” was written by______: Firdaus Tausi
12. Galileo invented______: Telescope
13. The concept that a single dominant power can maintain world peace is called______: Hegemonic Stability
14. Rational interests persuaded by individual causing collective destruction is called______: Tragedy of common
15. Humidity depends upon______: Temperature, Weather, Location
16. The largest part of hydrosphere is______: Pacific
17. Friction can be reduced by changing______: Sliding to rolling
18. Latitude of a place expresses its regular position relative to______: Equator
19. The infrared radiation from sun are strongly absorbed by______: Water bodies
20. Operation Gibraltar resulted into which war? Pakistan-India