1. Do you know that gold density is more than the density of mercury, so gold sinks in mercury.
2. Sodium is kept immersed in kerosene because it starts burning when it comes in contact with air.
3. Nitrous oxide is known as a laughing gas because any person starts laughing after smelling this gas. It was discovered by a scientist named Priestley.
4. Do you know that area is the first organic substance that was made in the laboratory.
5. Urea alone contains 76 percent nitrogen.
6. Do you know, 8 percent phosphorus is present in bones.
7. Ethyl acetate is used in making artificial fragrances.
8. Ethylene glycol is added to the radiators of cars to lower the freezing point in cold countries.
9. Ferric chloride is used to stop the flow of blood.
10. Did you know that -40°F is equal to -40°C?
11. If the cream is separated from milk, the density of milk increases.
12. Cream is a type of milk in which fat content increases and water content decreases.
13. Polonium (PO) is an element that has a maximum number of 27 isotopes.
14. Sulfuric acid (H2SO4) is also called 'oil of vitriol' and is also known as the king of acids.
15. Ag (gold), Au (silver), pt, ir, Hg, Pd, Rh, Ru, and os are also known as Nobel metals.
16. Did you know that fibrous glass is used to make bulletproof jackets?
17. Soaps made from potassium salts (caustic potash) of high fatty acids are called soft soaps. They are used in bathing.
18. Do you know that deuterium oxide (D2O) is called heavy water? It was discovered by Urey and Washburn in 1932.
19. Heavy water freezes at 3.8°C while sweet water freezes at 0°C.
20. The base of the world-famous Eiffel Tower is made of steel and cement.
21. Palladium metal is used in the manufacture of aircraft.
22. Do you know, deficiency of iron in the human body causes anemia, and excess iron causes disease.
23. Tungsten (W) is used as the coil of the bulb because its melting point is 3500°C.
24. Do you know that the Ph scale is used to measure acidity and basicity. If the pH value is less than 7, then it is said to be acidic, neutral at 0, and more than 7 as basic.
25. Rainwater is the purest water, but when its Ph value falls below 5.6, it is called acid rain.
26. Lithium, sodium, and potassium are so soft that they can be easily cut with a knife.
27. As we all know that all non-metals are bad conductors of electricity. Despite this, graphite, being a non-metal, is a good conductor of electricity.
28. Do you know there are many varieties of coal in which anthracite is considered the best. Carbon is present in maximum quantity in it.
29. The atom is electronegative, and John Dalton is known as the father of the atom.
30. Did you know that diamond, though non-metal, is the brightest material because it has total internal reflection?
31. You will be surprised to know that there is so much carbon in the human body that about 9000 pencils of graphite can be made from it.
32. Did you know that glucose is used to make silver mirrors?
33. Hydrogen peroxide is used to restore the complexion of old oil paintings.
34. Do you know, white gold is also known as platinum.
35. Silver is the best conductor of electricity.
36. Radon (Rd) is the heaviest of all the gaseous elements.
37. Xenon is also known as stranger gas.
38. The lowest density, lightest, and strongest reducing element is lithium.
39. Iodine is found in seagrass.
40. Phosphene is a type of gas used to give a home signal in a sea voyage.
41. Do you know that chlorine gas spoils the color of flowers, so it should not be sprayed on flowers.
42. Picric acid is one such organic compound that is used as a reagent in laboratories.
43. Dry ice, i.e., solid carbon dioxide on heating, changes directly from solid to gas.
44. Potassium chloride is considered most suitable for removing the permanent hardness of the water.
45. Do you know that Theophrastus mineral is used in the manufacture of talcum powder.
46. If chloroform is exposed to sunlight in the atmosphere, it turns into a toxic gas, 'phosgene.'
47. If the soil becomes alkaline, then gypsum is added to it to reduce it.
48. Do you know that about 3500 calories of energy are obtained from one kilogram of honey.
49. Most important facts, a fresh mixture of concentrated hydrochloric acid and concentrated nitric acid in the ratio of 3:1 is called aquaria. It is so strong that it can dissolve gold and platinum by itself. No acid alone has this ability. It is used for polishing old and discolored gold jewelry but adding gold jewelry in this solution reduces the weight of the jewelry as some of the gold jewelry gets dissolved in the aquaria solution.
50. The red color applied on the matchstick is called red phosphorus, and there is a type of this known as white phosphorus; it is so reactive that it is kept immersed in water because It starts burning as soon as possible out.
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