61. Which is the world's second-largest island?
62. What is the capital of Ukraine?
63. Tarbela Dam, the largest dam is located in:
64. Deepwater Horizon oil spill began on:
20th April 2010
20th April 2011
16th May 2010
1st June 2009
65. Tiber Oil Field is known for:
Deepwater Horizon oil spill
Largest oil field
Largest oil spill
Deadliest oil spill
66. What is the diameter of earth's inner core?
67. Lituya bay (where megatsunami occurred) is located in:
68. Sundarbans, mangrove forest is located in:
69. Which country produces more natural gas?
70. What is the average elevation of world?