Questions Related to Organic Chemistry

1. The shell of the egg is made of Calcium Carbonate.

2. Talc is basic magnesium silicate mineral

3. The highest and simplest element is hydrogen while the lightest metal is Lithium.

4. Temporary hardness of water is due to the bicarbonates of calcium and magnesium. It can be removed by boiling or adding lime.

5. Permanent hardness is due to the presence of sulphates and chlorides of calcium and magnesium. It can be removed by 'adding Washing soda or by distillation.

6. NPK mixtures are fertilizers with the mixtures of nitrogen, phosphorous and potassium.

7. The gas responsible for the Bhopal Gas Tragedy is Methyl Isocyanate (MIC).

8. CO2 is used as fire extinguishers.

9. Sodium is stored in Kerosene to prevent oxidation.

10. Thorium is extracted from monazite sand.

11. Red phosphorus is used in making matches.

12. In a dry cell, zinc and carbon act as electrodes.

13. Chlorine is used as a bleaching agent.

14. Lead pencils contain graphite.

15. White phosphorus is a strong poison.

16. Carborundum is used as an abrasive. for cutting and grinding glasses.

17. Silver iodide is used to make artificial rain.

18. Zinc oxide is called the 'flower of Zinc’

19. Water is called 'Universal Solvent"

20. The gas used in refrigerators is ammonia.

21. The lightest substance known is Hydrogen and the heaviest is Osmium.

22. Con. Nitric acid is used to purify gold.

23. A mixture of salt and ice gives a temperature below zero degree Celsius, which is called Antifreeze. It is used to breakdown ice mixtures in the radiators of cars in cold countries.

24. Neoprene is a synthetic rubber used as insulators in Electric cables.

25. A mixture of oxygen and acetylene gases are used for gas welding.

26. Methane is the main component of biogas.

27. The smell of cooking gas is due to the Ethyl Mercaptan which helps to detect gas leakage.

28. Alnico is an alloy of aluminum used for making magnets.

29. Duralmin is an alloy of aluminum (94%), copper (4%) and Magnesium (1%) used for constructing air crafts.

30. Invar is a nickel - iron alloy used for making clocks.

31. Aspirin or Acetyl salicylic acid is used as a pain killer and it has anti-inflammatory properties.

32. Butane is used in cigarette lights.

33. Tri Nitro Toluene (TNT) is used as an explosive.

34. The most commonly used Synthetic rubber is styrene Butadiene rubber (SBR). 

35. The electrodes of dry cell is made up of Graphite.