GAT Subject
Engineering
Computer Science Civil Engineering Chemical Engineering Agricultural Engineering Mechanical Engineering Electronics and Communication
16. | Electronic configuration of Gold [Au79] is | ||
A. | [Xe] 4f14, 5d10, 6s1 | ||
B. | [Xe] 4f10, 5d10, 6s2 | ||
C. | [Xe] 4f14, 5d9, 6s2 | ||
D. | [Xe ]4f14, 5d10, 6s2 | ||
17. | Electronic configuration of Gold [Au79] is | ||
A. | [Xe] 4f14, 5d10, 6s1 | ||
B. | [Xe] 4f10, 5d10, 6s2 | ||
C. | [Xe] 4f14, 5d9, 6s2 | ||
D. | [Xe ]4f14, 5d10, 6s2 | ||
18. | About 80% of ammonia is used for the production of | ||
A. | Explosives | ||
B. | Fertilizers | ||
C. | Nylon | ||
D. | Polymers | ||
19. | Urea is the most widely used nitrogen fertilizer in Pakistan. Its composition Is | ||
A. | NH2CO | ||
B. | N2H5CO2 | ||
C. | N2H4CO2 | ||
D. | N2H4CO | ||
20. | What is the percentage of nitrogen in NH3NO3? | ||
A. | 65% | ||
B. | 35% | ||
C. | 20% | ||
D. | 58% | ||