MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What is the boiling point of chloroform? |
| A. | 391K |
| B. | 334K |
| C. | 351K |
| D. | 111K |
| Answer» C. 351K | |
| 2. |
What is the chemical name of 'PlasterofParis'? |
| A. | calcium chloride |
| B. | calcium nitrate |
| C. | calcium sulfate hydrate |
| D. | none of these |
| Answer» D. none of these | |
| 3. |
Cryolite is an ore of which metal? |
| A. | Antimony |
| B. | barium |
| C. | arsenic |
| D. | aluminum |
| Answer» E. | |
| 4. |
What is Carbon? |
| A. | non-metal |
| B. | Metal |
| C. | Submetallic |
| D. | none of these |
| Answer» B. Metal | |
| 5. |
By which industry 'Bauxite' is used as a raw material? |
| A. | aluminum |
| B. | steel (steel |
| C. | Gold |
| D. | iron |
| Answer» B. steel (steel | |
| 6. |
Which of the following is used for water purification? |
| A. | vinegar |
| B. | Baking soda |
| C. | Alum |
| D. | tartaric acid |
| Answer» D. tartaric acid | |
| 7. |
Which of the following is suitable for alcoholic beverages? |
| A. | methanol |
| B. | ethanol |
| C. | Hexanol |
| D. | propanol |
| Answer» C. Hexanol | |
| 8. |
What is 'zeolite'? |
| A. | hydrated ferric oxide |
| B. | Hydrated Sodium Aluminum Silicate |
| C. | sodium hexameta phosphate |
| D. | sodium tetraborate |
| Answer» C. sodium hexameta phosphate | |
| 9. |
Which of the following statements is not correct regarding aluminum? |
| A. | Aluminum hydroxide is amphoteric in nature |
| B. | Aluminum exists in the free state in nature |
| C. | Nitric acid has no effect on aluminum |
| D. | SO2 with hot concentrated sulfuric aluminum gives |
| Answer» C. Nitric acid has no effect on aluminum | |
| 10. |
Which of the following compound is used in making fire retardant cloth? |
| A. | Sodium sulphate |
| B. | magnesium sulfate |
| C. | ferrous sulfate |
| D. | aluminum sulfate |
| Answer» B. magnesium sulfate | |
| 11. |
What is the most commonly found metal in the earth's crust? |
| A. | copper |
| B. | aluminum |
| C. | iron |
| D. | zinc |
| Answer» C. iron | |
| 12. |
How is Milk of Magnesia used? |
| A. | laxative |
| B. | Painkillers |
| C. | Sedative |
| D. | antibiotic |
| Answer» B. Painkillers | |
| 13. |
Which aluminum salt is commonly used to stop bleeding? |
| A. | aluminum chloride |
| B. | aluminum nitrate |
| C. | aluminum sulfate |
| D. | potash alum |
| Answer» C. aluminum sulfate | |
| 14. |
What is 'Bauxite' ore? |
| A. | Of iron |
| B. | of aluminum |
| C. | of copper |
| D. | Of gold |
| Answer» C. of copper | |
| 15. |
Its compound is 'Epsom' salt? |
| A. | That |
| B. | Mg |
| C. | Ba |
| D. | Pb |
| Answer» C. Ba | |
| 16. |
The very soft mineral 'talc' (soap stone) is mainly? |
| A. | manganese silicate |
| B. | sodium silicate |
| C. | Sodium phosphate |
| D. | magnesium silicate |
| Answer» E. | |
| 17. |
What is 'Gun-powder' made of? |
| A. | nitrate of potassium and sodium |
| B. | sulphate of potassium and magnesium |
| C. | Charcoal, Sulfur and Potassium Nitrate |
| D. | Potassium Sulphate and Charcoal |
| Answer» D. Potassium Sulphate and Charcoal | |
| 18. |
Which one of the following is used in making gunpowder? |
| A. | magnesium sulfate |
| B. | potassium nitrate |
| C. | sodium stearate |
| D. | calcium sulfate |
| Answer» C. sodium stearate | |
| 19. |
What is the chemical name of 'Caustic Soda'? |
| A. | sodium thiosulfate |
| B. | Sodium chloride |
| C. | sodium carbonate |
| D. | sodium hydroxide |
| Answer» E. | |
| 20. |
What is the common name of 'Chile Saltpeter'? |
| A. | potassium nitrate |
| B. | sodium nitrite |
| C. | potassium nitrite |
| D. | sodium nitrate |
| Answer» E. | |
| 21. |
Which one of the following substances is used as a pigment in dyeing and leather industry? |
| A. | magnesium oxide |
| B. | magnesium carbonate |
| C. | magnesium chloride |
| D. | magnesium sulfate |
| Answer» E. | |
| 22. |
What is the chemical name of common edible salt? |
| A. | sodium bicarbonate |
| B. | Sodium chloride |
| C. | sodium salicylate |
| D. | sodium hydroxide |
| Answer» C. sodium salicylate | |
| 23. |
Why is sodium thiosulfate solution used in photography? |
| A. | to remove undigested silver |
| B. | To reduce silver bromide particles to silver |
| C. | To remove undissolved silver bromide as soluble silver thiosulfate complex |
| D. | To convert metallic silver into silver salt |
| Answer» D. To convert metallic silver into silver salt | |
| 24. |
Which of the following substances is used in photography and as an antichlor? |
| A. | chrome red |
| B. | sodium thiosulfate |
| C. | hydrogen peroxide |
| D. | calomel |
| Answer» C. hydrogen peroxide | |
| 25. |
Which mineral is sodium chloride or table salt found in nature? |
| A. | halite |
| B. | sylvite |
| C. | Sphalerite |
| D. | talc |
| Answer» B. sylvite | |
| 26. |
In photography, what is the chemical used as a fixer/developer? |
| A. | Sodium sulphate |
| B. | sodium sulfide |
| C. | sodium thiosulfate |
| D. | sodium sulfite |
| Answer» D. sodium sulfite | |
| 27. |
What happens in the air bag used for the safety of the car driver? |
| A. | sodium bicarbonate |
| B. | sodium amide |
| C. | sodium nitrite |
| D. | sodium peroxide |
| Answer» C. sodium nitrite | |
| 28. |
What is the chemical name of 'Hypo' commonly used in photography? |
| A. | sodium thiosulfate |
| B. | silver iodide |
| C. | sodium nitrate |
| D. | silver nitrate |
| Answer» B. silver iodide | |
| 29. |
What is potassium nitrate used for? |
| A. | health drink |
| B. | Fertilizer |
| C. | synthetic fabric |
| D. | none of these |
| Answer» C. synthetic fabric | |
| 30. |
What is the chemical formula of NaCl? |
| A. | ammonia |
| B. | sugar |
| C. | Salt |
| D. | Water |
| Answer» D. Water | |
| 31. |
What is the popular name of washing soda? |
| A. | calcium carbonate |
| B. | magnesium carbonate |
| C. | sodium carbonate |
| D. | potassium carbonate |
| Answer» D. potassium carbonate | |
| 32. |
Which one of the following is the chemical name of baking soda? |
| A. | sodium bicarbonate |
| B. | sodium carbonate |
| C. | potassium bicarbonate |
| D. | potassium carbonate |
| Answer» B. sodium carbonate | |
| 33. |
Sodium carbonate is commonly known as? |
| A. | lime |
| B. | glass |
| C. | quartz |
| D. | Leave |
| Answer» E. | |
| 34. |
Where is washing soda used? |
| A. | For disinfection of drinking water |
| B. | To cook |
| C. | to soften hard water |
| D. | As a non-toxic ingredient as a home care product |
| Answer» D. As a non-toxic ingredient as a home care product | |
| 35. |
What product is formed when sodium bicarbonate is heated excessively? |
| A. | sodium carbonate |
| B. | sodium hydroxide |
| C. | sodium peroxide |
| D. | sodium monoxide |
| Answer» B. sodium hydroxide | |
| 36. |
What is the common name of sodium bicarbonate? |
| A. | Baking soda |
| B. | soda ash |
| C. | soda lime |
| D. | baking powder |
| Answer» B. soda ash | |
| 37. |
Have a meal? |
| A. | sodium carbonate |
| B. | sodium bicarbonate |
| C. | Sodium sulphate |
| D. | sodium hydroxide |
| Answer» C. Sodium sulphate | |
| 38. |
Which of the following is commonly known as washing soda? |
| A. | calcium carbonate |
| B. | calcium acetate |
| C. | magnesium sulfate |
| D. | sodium carbonate |
| Answer» E. | |
| 39. |
Why do metals carry electricity? |
| A. | due to low melting point |
| B. | Due to high tensile strength |
| C. | due to free electrons |
| D. | Due to the high atomic density |
| Answer» D. Due to the high atomic density | |
| 40. |
Electron affinity while moving from left to right in the period? |
| A. | goes down |
| B. | increases |
| C. | remains the same |
| D. | goes to zero |
| Answer» C. remains the same | |
| 41. |
Sodium metal is stored by immersing it in |
| A. | in kerosene |
| B. | in ammonia |
| C. | in water |
| D. | In the air |
| Answer» B. in ammonia | |
| 42. |
Nowadays, yellow lamps are often used for lighting the roads. Which of the following gas is used in those lamps? |
| A. | sodium |
| B. | neon |
| C. | hydrogen |
| D. | nitrogen |
| Answer» B. neon | |
| 43. |
What is the atomic number of lanthanum? |
| A. | 55 |
| B. | 58 |
| C. | 56 |
| D. | 57 |
| Answer» E. | |
| 44. |
Which of the following is not an electronic configuration of a metal? |
| A. | 2,8,3 |
| B. | 2,8,1 |
| C. | 2,6 |
| D. | 2,1 |
| Answer» D. 2,1 | |
| 45. |
What are the properties of alkaline metals? |
| A. | highly unstable at room temperature |
| B. | vaporizes at room temperature |
| C. | gets electrons easily |
| D. | gives off electrons easily |
| Answer» E. | |
| 46. |
Who among the following is called Aurum? |
| A. | bronze |
| B. | Gold |
| C. | silver |
| D. | copper |
| Answer» C. silver | |
| 47. |
What is the law calledEqual number of molecules in the same volume of all gases at the same temperature and pressureis called? |
| A. | boyle's law |
| B. | Charles' law |
| C. | avogadro's law |
| D. | Gay-Lussac's Law |
| Answer» D. Gay-Lussac's Law | |
| 48. |
What is called the 'Fuel of the Future'? |
| A. | hydrogen |
| B. | helium |
| C. | methane |
| D. | oxygen |
| Answer» B. helium | |
| 49. |
Which of the following law is not related to gas? |
| A. | boyle's law |
| B. | joule's law |
| C. | avogadro's law |
| D. | Charles' law |
| Answer» C. avogadro's law | |
| 50. |
What are the least reactive elements of the periodic table? |
| A. | transition metal |
| B. | alkaline earth metals |
| C. | Noble gases |
| D. | alkaline metals |
| Answer» D. alkaline metals | |