1. How many zeros are there in one hundred thousand?
1
2. How many hours are there in two days?
6
3. How many months of the year have 31 days?
- 7 (January, March, May, July, August, October and December)
11
4. How many weeks are there in one year?
14
5. Which are the colors in a rainbow?
- Violet, Indigo, Blue, Green, Yellow, Orange, Red
18
6. How many bones does an adult human have?
21
7. Who was the first man to walk on the moon?
28
8. How many millimeters are there in 1cm?
32
9. Which is the longest river on the earth?
36
10. Which is the principal source of energy for earth?
39
11. How many lungs does the human body have?
42
12. What is the standard taste of the water?
46
13. Which is the tallest mountain in the world?
52
14. Which is the fastest animal on the land?
53
15. Which continent is known as 'Dark' continent?
58
16. Which planet is known as the Red Planet?
62
17. Which is the most sensitive organ in our body?
65
18. Which is the largest ocean in the world?
70
19. Which day is observed as World Environment Day?
76
20. How many years are there in a century?
79
