The symbol He stands for Helium

1. The symbol He stands for Helium
2. The symbol Md stands for Mendelevium
3. The symbol of gold is Au
4. The symbol of silicon is Si
5. The symbol of silver is Ag
6. The symbol of sodium is Na
7. The symbol of Sr stands for Strontium
8. The symbol of titanium is Ti
9. The symbol Rb stands for Rubidium
10. The symbol Zn stands for Zinc
11. The symbol Zr stands for Zirconium
12. The three states of matter are Solid,liquid and gas
13. The two colours seen at the extreme ends of the pH chart are Red & Blue 
14. The unit of loudness is Phon
15. The unit of power is Watt
16. Thermostat is an instrument used for regulating Constant temperature
17. Toxicology is the study of Poisons
18. Unlike most other fish, sharks have no: Bones
19. Virology is the study of Viruses
20. Why food articles are mostly packed in alluminium foil? To avoid rancidity

21. The basic building blocks of proteins are Amino acids
22. The biggest plant seed is Cocodemer
23. The botanical name for brinjal is Solanum melongenal
24. The botanical name for onion is Allium Cepa
25. The botanical name for rice is Oryza Sativa
26. The botanical name of tea is Camellia Sinensis
27. The botanical name of the cotton plant is Gossipium Hirsutum
28. The chemical formula of chloroform is CHcl3
29. The chemical formula of common salt is Nacl
30. The chemical formula of lime soda is CaCO3
31. The chemical formula of sodium bicarbonate is NaHCO3
32. The chemical formula of washing soda is Na2CO3, IOH2O
33. The chemical name of baking powder is Sodium bicarbonate
34. The chemical name of bleaching powder is Calcium hypochlorite
35. The chemical name of Chloroform is Trichloromethane
36. The formula C6H5OH stands for Phenol
37. The formula CHCI3 stands for Trichloromethane
38. The formula H2O2 stands for Hydrogen peroxide
39. The formula H2SO4 stands for Sulphuric Acid
40. The formula HCL stands for Hydrochloric Acid