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. |
The percentage of carbon is the least in -- |
| A. | Grey cast iron |
| B. | Wrought iron |
| C. | White cast iron |
| D. | Steel |
| Answer» E. | |
| 2. |
The purest form of iron is -- |
| A. | Steel |
| B. | Pig iron |
| C. | Cast iron |
| D. | Wrought iron |
| Answer» E. | |
| 3. |
Heavy water is - |
| A. | Tritium oxide |
| B. | Deuterium oxide |
| C. | Rain water |
| D. | Water at 4 degree C |
| Answer» C. Rain water | |
| 4. |
Potassium nitrate is used in -- |
| A. | Salt |
| B. | Glass |
| C. | Fertiliser |
| D. | Medicine |
| Answer» C. Fertiliser | |
| 5. |
Parmanent hardness of water may be removed by the addition of -- |
| A. | Alum |
| B. | Sodium Carbonate |
| C. | Lime |
| D. | Potassium Permanganate |
| Answer» C. Lime | |
| 6. |
The gas usually filled in electric bulb is - |
| A. | Hydrogen |
| B. | Oxygen |
| C. | Nitrogen |
| D. | Carbon di-oxide |
| Answer» D. Carbon di-oxide | |
| 7. |
The gases used in different types of welding would include - |
| A. | Oxygen u0026 Hydrogen |
| B. | Oxygen, acetylene u0026 argon |
| C. | Oxygen u0026 acetylene |
| D. | Oxygen, hydrogen u0026 nitrogen |
| Answer» D. Oxygen, hydrogen u0026 nitrogen | |
| 8. |
The two elements that are frequently used for making transistors are - |
| A. | Boron and Aluminium |
| B. | Silicon and Germenium |
| C. | Iridium and Tungsten |
| D. | Niobium and Columbium |
| Answer» C. Iridium and Tungsten | |
| 9. |
Chemical formula of Water glass is - |
| A. | Na2SiO3 |
| B. | Al2O3 |
| C. | NaAlO2 |
| D. | CaSiO3 |
| Answer» B. Al2O3 | |
| 10. |
Caustic Soda is - |
| A. | Nacl |
| B. | Na2CO3 |
| C. | NaOH |
| D. | NaHCO3 |
| Answer» D. NaHCO3 | |
| 11. |
Which of the following gas is not known as green house gas ? |
| A. | Methane |
| B. | Carbon dioxide |
| C. | Nitrous oxide |
| D. | CFC |
| Answer» D. CFC | |
| 12. |
Bleaching powder is made from - |
| A. | Sulphur dioxide and gypsum |
| B. | Chlorine and Charcoal |
| C. | Soda ash and lime |
| D. | Lime and Chlorine |
| Answer» E. | |
| 13. |
The filament of electric bulb is made of - |
| A. | Iron |
| B. | Nichrome |
| C. | Tungsten |
| D. | Graphite |
| Answer» D. Graphite | |
| 14. |
The metal used in storage batteries - |
| A. | Iron |
| B. | Copper |
| C. | Lead |
| D. | Zinc |
| Answer» D. Zinc | |
| 15. |
Permanent hardness of water can be removed by adding - |
| A. | Potassium Permanganate |
| B. | Chlorine |
| C. | Bleaching Powder |
| D. | Washing Soda |
| Answer» E. | |
| 16. |
The formula of Plaster of Paris is - |
| A. | CaSO4 |
| B. | CaSO4, 2H2O |
| C. | 2CaSO4, 4H2O |
| D. | 2CaSO4, H2O |
| Answer» E. | |
| 17. |
Washing soda is the common name of - |
| A. | Calcium Carbonate |
| B. | Calcium Bi-Carbonate |
| C. | Sodium Carbonate |
| D. | Sodium Bi-Carbonate |
| Answer» D. Sodium Bi-Carbonate | |
| 18. |
Carborandum is - |
| A. | Silicon Dioxide |
| B. | Silicon Carbide |
| C. | Silicon Nitride |
| D. | Silicon Phosphide |
| Answer» C. Silicon Nitride | |
| 19. |
The chemial name of Uria is - |
| A. | Aneurin |
| B. | Chloroetane |
| C. | Carbamide |
| D. | None of these |
| Answer» D. None of these | |
| 20. |
Water has maximum density at - |
| A. | –4 degree C |
| B. | 0 degree C |
| C. | 4 degreeC |
| D. | 100 degree C |
| Answer» B. 0 degree C | |
| 21. |
Bromine is - |
| A. | colourless gas insoluble in water |
| B. | A highly inflammable gas |
| C. | A Black solid. |
| D. | A red liquid. |
| Answer» E. | |
| 22. |
Most soluble in water is - |
| A. | Camphor |
| B. | Sugar |
| C. | Sulphur |
| D. | Common Salt |
| Answer» C. Sulphur | |
| 23. |
Cotton fibers are made of - |
| A. | cellulose |
| B. | starch |
| C. | proteins |
| D. | fats |
| Answer» B. starch | |
| 24. |
Nuclear fission is caused by the impact of - |
| A. | Proton |
| B. | Electron |
| C. | Neutron |
| D. | A u0026 b |
| Answer» D. A u0026 b | |
| 25. |
The high temperature superconductors are - |
| A. | Metal alloys |
| B. | Ceramic oxides |
| C. | Inorganic polymers |
| D. | Pure rare earth metals |
| Answer» C. Inorganic polymers | |
| 26. |
The gas usually causing explosions in coal mines is - |
| A. | Hydrogen |
| B. | Carbon monoxide |
| C. | Air |
| D. | Methane |
| Answer» E. | |
| 27. |
The ingredients of Gun metal are - |
| A. | Iron, tin |
| B. | Copper, tin |
| C. | Iron, brass, tin |
| D. | Iron, zinc, titanium |
| Answer» C. Iron, brass, tin | |
| 28. |
Quartz crystals normally used in quartz clocks etc. is chemically - |
| A. | Sodium Silicate |
| B. | Silicon dioxide |
| C. | Germenium dioxide |
| D. | A mixture of B u0026 C |
| Answer» C. Germenium dioxide | |
| 29. |
Bell Metal is an alloy of - |
| A. | Brass and Nickel |
| B. | Zinc and Copper |
| C. | Tin and Copper |
| D. | Nickel and Copper |
| Answer» D. Nickel and Copper | |
| 30. |
Brass gets discoloured in air due to the presence of which gas in air - |
| A. | Carbon dioxide |
| B. | Oxygen |
| C. | Hydrogen Sulphide |
| D. | Nitrogen |
| Answer» D. Nitrogen | |
| 31. |
Which of the following elements is obtained from sea weeds ? |
| A. | Argon |
| B. | Sulphur |
| C. | Vanadium |
| D. | Iodine |
| Answer» E. | |
| 32. |
Which of the following characters is not shown by hydrogen - |
| A. | It burns in air to form water |
| B. | It supports combustion |
| C. | It combines with almost all metals forming hydrides |
| D. | It readily combines with fluorine and chlorine |
| Answer» C. It combines with almost all metals forming hydrides | |
| 33. |
The group of metals Fe, Co, Ni may be best called as - |
| A. | Alkali metals |
| B. | Rare metals |
| C. | Main group metals |
| D. | Transition metals |
| Answer» E. | |
| 34. |
An element that does not occur in nature but can be produced artificially is - |
| A. | Thorium |
| B. | Radium |
| C. | Plutonium |
| D. | Uranium |
| Answer» D. Uranium | |
| 35. |
The inert gas which is substituted for nitrogen in the air, used by deep sea drivers for breathing is - |
| A. | Helium |
| B. | Argon |
| C. | Krypton |
| D. | Xenon |
| Answer» B. Argon | |
| 36. |
The property of a substance to absorb moisture from the air on exposure is called - |
| A. | Osmosis |
| B. | Desiccation |
| C. | Efflorescence |
| D. | Deliquescene |
| Answer» E. | |
| 37. |
The metallic constituents of hard water are - |
| A. | Magnesium, Calcium and tin |
| B. | Iron, tin and calcium |
| C. | Calcium, magnesium and iron |
| D. | Magnesium, tin and iron |
| Answer» D. Magnesium, tin and iron | |
| 38. |
The main constituents of Pearl are - |
| A. | Calcium Carbonate, Magnesium Carbonate |
| B. | Calcium oxide, Ammonium Chloride |
| C. | Argonite , Chonchiolin |
| D. | Ammonium Sulphate, Sodium Carbonate |
| Answer» B. Calcium oxide, Ammonium Chloride | |
| 39. |
Of the various forms of carbon, which one is used for absorption purpose ? |
| A. | Diamond |
| B. | Graphite |
| C. | Coke |
| D. | Wood Charcoal |
| Answer» D. Wood Charcoal | |
| 40. |
A super conductor is characterised by - |
| A. | Zero permeability |
| B. | Low permeability |
| C. | High permeability |
| D. | Infinite permeability |
| Answer» B. Low permeability | |
| 41. |
Cow milk is a rich source of - |
| A. | Vitamin A |
| B. | Vitamin B1 |
| C. | Vitamin C |
| D. | Vitamin D |
| Answer» C. Vitamin C | |
| 42. |
Diamond is harder than graphite because of - |
| A. | Difference of layers of atoms |
| B. | Tetrahedral structure of diamonds |
| C. | Difference of crystaline structures |
| D. | None of these |
| Answer» D. None of these | |
| 43. |
The average salinity of sea water is - |
| A. | 2% |
| B. | 3% |
| C. | 2.5% |
| D. | 3.5% |
| Answer» E. | |
| 44. |
Which of the following is the most stable element? |
| A. | Uranium |
| B. | Hydrogen |
| C. | Oxygen |
| D. | Lead |
| Answer» E. | |
| 45. |
The element found in the surface of the Moon is - |
| A. | Tin |
| B. | Tungsten |
| C. | Tantalum |
| D. | Titanium |
| Answer» E. | |
| 46. |
The sex ratio in Uttar Pradesh has moved from 898 in year 2001 to _____in year 2011. |
| A. | 912 |
| B. | 922 |
| C. | 925 |
| D. | 930 |
| Answer» B. 922 | |
| 47. |
The type of glass used in making prisms and lenses is -- |
| A. | Soft glass |
| B. | Pyrex glass |
| C. | Jena glass |
| D. | Flint glass |
| Answer» E. | |
| 48. |
Which of the following material is used to prepare blue-black ink ? |
| A. | Gallic acid |
| B. | Tannic acid |
| C. | Ferrous sulphate |
| D. | All of these |
| Answer» E. | |
| 49. |
The material used for bleaching paper pulp is -- |
| A. | Chlorine |
| B. | Caustic soda |
| C. | Sodium Hypochlorite |
| D. | Lime |
| Answer» D. Lime | |
| 50. |
Carbon tetrachloride fire extinguisher should not be used in closed room because it produces poisonous glass called -- |
| A. | Carbon Monoxide |
| B. | Phosphine |
| C. | Phosgene |
| D. | None of these |
| Answer» E. | |