Elements and compounds acids bases salts petroleum products fertilizers pesticides metallurgy and food adulterants. - One Line Questions

1. What is the pH of a neutral solution? — 7
2. Which of the following is a strong acid? — Hydrochloric acid
3. Which type of compound typically turns red litmus paper blue? — Base
4. What is the chemical symbol for gold? — Au
5. The Bessemer process is used for the production of: — Steel
6. What is the primary ore of iron? — Haematite
7. What is the chemical formula for calcium carbonate? — CaCO3
8. Which element is essential for the formation of hemoglobin in red blood cells? — Iron
9. A substance that changes color in the presence of an acid or base is called a(n): — Indicator
10. Which metal is extracted from the ore galena? — Lead
11. What is the main metal present in stainless steel? — Iron
12. Which process is used to purify impure metals by melting them and allowing them to solidify? — Zone refining
13. What is the main component of natural gas? — Methane
14. Organophosphates are a class of: — Insecticides
15. Which acid is found in vinegar? — Acetic acid
16. What is the main use of asphalt, a product of petroleum distillation? — Road construction
17. Which petroleum product is primarily used as fuel for jet engines? — Kerosene
18. Which fraction of petroleum is used as fuel for diesel engines? — Diesel oil
19. What is the chemical formula for sulfuric acid? — H2SO4
20. Adulteration of chili powder with brick dust is done to: — Increase weight and volume
21. Which term describes a substance that can neutralize an acid? — Base
22. What is the chemical symbol for iron? — Fe
23. Which metal is extracted from bauxite ore? — Aluminum
24. What is the chemical formula for common salt? — NaCl
25. Which of the following is a non-metal that is a liquid at room temperature? — Bromine
26. The adulteration of turmeric powder with which substance is common? — Lead chromate
27. Which gas is produced during the fractional distillation of petroleum and used as LPG? — Propane and Butane
28. What is the main component of LPG (Liquefied Petroleum Gas)? — Propane and butane
29. The presence of 'benzoic acid' in food products often indicates: — Preservative
30. Potassium nitrate (KNO3) is a type of fertilizer known as: — Potassic fertilizer
31. Which of the following is a noble gas? — Helium
32. Which non-metal is crucial for the formation of all organic compounds? — Carbon
33. Which of the following is a selective herbicide, meaning it targets specific weeds? — 2,4-D
34. What is the primary nutrient in urea, a common fertilizer? — Nitrogen
35. Which of the following is a widely used insecticide? — DDT
36. Which element is a primary macronutrient for plants, crucial for photosynthesis? — Nitrogen
37. Which of the following is a systemic insecticide, absorbed by the plant and toxic to pests that feed on it? — Neonicotinoids
38. DDT (Dichloro-diphenyl-trichloroethane) is a pesticide that has been banned in many countries due to its: — Persistence and bioaccumulation
39. What is the process of extracting a metal from its ore called? — Metallurgy
40. The process of converting iron ore into iron is called: —
41. Which element is the most abundant in the Earth's crust? — Oxygen
42. Which method is used to extract highly reactive metals like sodium from their molten salts? — Electrolysis
43. Which process involves heating an ore in the presence of excess air to convert it into its oxide? — Roasting
44. Which of the following is an amphoteric substance, meaning it can act as both an acid and a base? — Water
45. What is the common adulterant found in milk? — Water
46. What is the main purpose of adding fertilizers to soil? — To provide essential nutrients for plant growth
47. Which fertilizer provides phosphorus to plants? — Superphosphate
48. Which of the following is a common household base? — Baking soda
49. Which of the following is a common adulterant in ground spices, used to enhance color? — Artificial colors like Sudan dyes
50. What is formed when an acid reacts with a base? — Water and a salt
All One Line Questions
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