1. Permanent hardness of water is due to______: Calcium sulphate
2. How many bones are there in the human body? 206
3. Which vessel provides blood to liver? Hepatic portal artery
4. Which is not included in the earth’s environment?
5. Which control rods are used in nuclear reactors? Cadmium
6. Which country lies on equator? Kenya
7. What is Anthracite? Pure carbon
8. How many bits are required to store hexadecimal word AF? 8 bits
9. What is the pre-released software version? Beta
10. What organelles do plant cells have? Cell walls and vacuoles
11. What is protein metabolism waste in humans? Urea
12. Light year is a unit of______: Distance
13. The macronutrients of plants_______: Nitrogen, Potassium, Phosphorus
14. Atomic number is also called______: Proton number
15. Blood contains______: Red Blood Cells, White Blood Cells, Platelets
16. Which is an example of warm-blooded animal? Dolphin
17. H+ is yielded by______: Acids
18. What is said to be the unavailability of system thermal energy for conversion into mechanical work? Entropy
19. Bronze medal is made up of metals______: Copper, Tin
20. The loudness of sound depends on its______: Amplitude