61. Which is the hardest gemstone? A. Diamond B. Ruby C. Sapphire D. None of these ✅ The correct answer is option Diamond.
62. The total member of Security Council are: A. 13 B. 14 C. 15 D. 20 ✅ The correct answer is option 15.
63. The first Nuclear power plant in Pakistan was established at which place? A. Karachi B. Lahore C. Islamabad D. Rawalpindi ✅ The correct answer is option Karachi.
64. At which temperature does bacteria die? A. 102 F B. 106 F C. 110 F D. 120 F ✅ The correct answer is option 102 F.
65. The brain of the computer is: A. Keyboard B. Mouse C. Hard Disk D. Central Processing Unit ✅ The correct answer is option Central Processing Unit.