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. |
Which of the following can be used as lamp oil? |
| A. | Lipids |
| B. | Carbohydrates |
| C. | Proteins |
| D. | Nucleic acids |
| Answer» B. Carbohydrates | |
| 2. |
Which of the following can be beaten and converted into thin sheets? |
| A. | Zinc |
| B. | Phosphorus |
| C. | Sulphur |
| D. | Oxygen |
| Answer» B. Phosphorus | |
| 3. |
Which of the following bonds are weakest in nature? |
| A. | Single bond |
| B. | Double bond |
| C. | Triple bond |
| D. | Hydrogen bond |
| Answer» E. | |
| 4. |
Which of the following atoms has the largest radius? |
| A. | Br |
| B. | K |
| C. | Na |
| D. | Cl |
| Answer» C. Na | |
| 5. |
Which of the following are highly compressible? |
| A. | Solid |
| B. | Liquid |
| C. | Gas |
| D. | Solid and Liquid |
| Answer» D. Solid and Liquid | |
| 6. |
which of the following are chemical changes?_x005F_x000D_ A)Â Cooking of Food_x005F_x000D_ B)Â Digestion of Food_x005F_x000D_ C)Â Freezing of water_x005F_x000D_ D)Â Water is heated up |
| A. | A & B |
| B. | A, B & C |
| C. | C & D |
| D. | All the above |
| Answer» B. A, B & C | |
| 7. |
Which of the following are bad conductors of electricity?_x005F_x000D_ A) Mica & QuartzB) Metals & RubberC) Metals & Mica_x005F_x000D_ |
| A. | A and B only |
| B. | A and C only |
| C. | B and C only |
| D. | A only |
| Answer» E. | |
| 8. |
Which of the following allotropes of Carbon is used as a reducing agent in metallurgy? |
| A. | Carbon Black |
| B. | Graphite |
| C. | Charcoal |
| D. | Coke |
| Answer» E. | |
| 9. |
Which of the following acts both as oxidising and reducing agent? |
| A. | nitric acid |
| B. | ammonia |
| C. | nitrous acid |
| D. | nitrogen peroxide |
| Answer» D. nitrogen peroxide | |
| 10. |
Which of the following acts as best adsorbent? |
| A. | Charcoal |
| B. | Activated Charcoal |
| C. | Activated Coconut Charcoal |
| D. | Carbon black |
| Answer» D. Carbon black | |
| 11. |
Which of the follow is the last element in Newlands Law of Octaves classification? |
| A. | Rhodium |
| B. | Radium |
| C. | Iron |
| D. | Thorium |
| Answer» E. | |
| 12. |
Which of the below options is called a laughing gas? |
| A. | N2O |
| B. | CO2 |
| C. | H2O |
| D. | SO2 |
| Answer» B. CO2 | |
| 13. |
Which non metal is liquid at room temperature? |
| A. | Mercury |
| B. | Caesium |
| C. | Bromine |
| D. | Rubidium |
| Answer» D. Rubidium | |
| 14. |
Which Noble Gas has the highest First Ionization Energy? |
| A. | Neon |
| B. | Helium |
| C. | Argon |
| D. | Xenon |
| Answer» C. Argon | |
| 15. |
Which of the following substances cause temporary hardness in water?_x005F_x000D_ 1. Mg(HCO3)2_x005F_x000D_ 2. Ca(HCO3)2_x005F_x000D_ 3. CaCl2_x005F_x000D_ 4. MgSO4 |
| A. | 3 and 4 |
| B. | 2and 3 |
| C. | 1 and 4 |
| D. | 1 and 2 |
| Answer» E. | |
| 16. |
Which  one  of  the  following  is  not  a semiconductor? |
| A. | Silicon |
| B. | Germanium |
| C. | Quartz |
| D. | Gallium arsenide |
| Answer» D. Gallium arsenide | |
| 17. |
Which molecule is used up in photosynthesis? |
| A. | Water |
| B. | Carbohydrates |
| C. | Oxgen |
| D. | Sugar |
| Answer» B. Carbohydrates | |
| 18. |
Which molecule is nonpolar and has a symmetrical shape? |
| A. | NH3 |
| B. | HCl |
| C. | H2O |
| D. | CH4 |
| Answer» E. | |
| 19. |
Which molecule contains a polar covalent bond? |
| A. | NBr3 |
| B. | C2H4 |
| C. | ZnS |
| D. | AgL |
| Answer» B. C2H4 | |
| 20. |
Which molecule contains a nonpolar covalent bond? |
| A. | Cl2 |
| B. | Br2 |
| C. | H2 |
| D. | All of the above |
| Answer» E. | |
| 21. |
Which method will be employed to test the hardness of water? |
| A. | Boiling |
| B. | Distillation |
| C. | Formation of lather with soap |
| D. | None of these |
| Answer» D. None of these | |
| 22. |
Which metal is liquid at room temperature? |
| A. | Bromine |
| B. | Chlorine |
| C. | Mercury |
| D. | Cesium |
| Answer» D. Cesium | |
| 23. |
Which kind of energy is stored in a chemical bond? |
| A. | Potential energy |
| B. | Kinetic energy |
| C. | Both A & B |
| D. | None of the above |
| Answer» B. Kinetic energy | |
| 24. |
Which is the only non-metal placed at the left side of the Modern Periodic Table? |
| A. | Hydrogen |
| B. | Carbon |
| C. | Neon |
| D. | Helium |
| Answer» B. Carbon | |
| 25. |
Which is the most malleable metal? |
| A. | Gold |
| B. | Silver |
| C. | Both A & B |
| D. | Bronze |
| Answer» B. Silver | |
| 26. |
Which is the most abundant combustible natural gas?_x005F_x000D_ |
| A. | Propane |
| B. | Methane |
| C. | Ethane |
| D. | Butane |
| Answer» C. Ethane | |
| 27. |
Which is the only gem of world made of a single element? |
| A. | Platinum |
| B. | Diamond |
| C. | Emerald |
| D. | Ruby |
| Answer» C. Emerald | |
| 28. |
Which is the most economical method of removing solid matter from water? |
| A. | Using deactivated carbon |
| B. | Electrolysis |
| C. | Distillation |
| D. | Sedimentation |
| Answer» E. | |
| 29. |
Which is the Lightest of all the metals? |
| A. | Hydrogen |
| B. | Lithium |
| C. | Sodium |
| D. | Pottasium |
| Answer» C. Sodium | |
| 30. |
Which is the heaviest metal among the following? |
| A. | Gold |
| B. | Silver |
| C. | Iron |
| D. | Copper |
| Answer» B. Silver | |
| 31. |
Which is the gas used for making vegetables and vanaspathi from vegetable oils? |
| A. | Hydrogen |
| B. | Nitrogen |
| C. | Argon |
| D. | Helium |
| Answer» B. Nitrogen | |
| 32. |
Which is the first metallic element in the Modern Periodic Table? |
| A. | Li |
| B. | Na |
| C. | He |
| D. | H2 |
| Answer» B. Na | |
| 33. |
Which is the best definition of activation energy? |
| A. | the energy required to break the bonds of reactant molecules |
| B. | the energy required to end a chemical reaction |
| C. | the energy required to bind a substrate to an active site |
| D. | the energy required to re-form bonds in product molecules |
| Answer» B. the energy required to end a chemical reaction | |
| 34. |
Which is released during the formation of a peptide bond?_x005F_x000D_ Â _x005F_x000D_ |
| A. | an amino group |
| B. | a five-carbon sugar |
| C. | both 1 and 2 |
| D. | a water molecule |
| Answer» E. | |
| 35. |
Which is not a green house gas in the following?_x005F_x000D_ |
| A. | Ozone |
| B. | Nitrous oxide |
| C. | Water vapour |
| D. | Hydrogen |
| Answer» E. | |
| 36. |
Which is known as carbolic acid? |
| A. | Phenol |
| B. | Ethanol |
| C. | Acetic acid |
| D. | Oxalic acid |
| Answer» B. Ethanol | |
| 37. |
Which is a pair of allotropes? |
| A. | carbon-16 and carbon-12 |
| B. | diamond and graphite |
| C. | carbon dioxide and graphite |
| D. | diamond and carbon dioxide |
| Answer» C. carbon dioxide and graphite | |
| 38. |
Which is a compound that contains carbon? |
| A. | Ethane |
| B. | Propane |
| C. | Methane |
| D. | All of the above |
| Answer» E. | |
| 39. |
Which is a characteristic of a Mixture? |
| A. | a pure substance |
| B. | chemically comined |
| C. | they can be mixed in some fixed ratio |
| D. | it is either homogenous or heterogenous |
| Answer» E. | |
| 40. |
Which ionization process requires the most energy? |
| A. | C3+ (g) → C4+ (g) + e- |
| B. | C (g) → C+ (g) + e- |
| C. | C2+ (g) → C3+ (g) + e- |
| D. | C+ (g) → C2+ (g) + e- |
| Answer» B. C (g) → C+ (g) + e- | |
| 41. |
Which has the lowest freezing point? |
| A. | Mercury |
| B. | Helium |
| C. | Cesium |
| D. | Aluminium |
| Answer» C. Cesium | |
| 42. |
Which half reaction correctly represents reduction? |
| A. | Fe2+ + e- ---> Fe3+ |
| B. | Au3+ + 3e– ---> Au |
| C. | Ag ---> Ag+ + e- |
| D. | All of the above |
| Answer» C. Ag ---> Ag+ + e- | |
| 43. |
Which group in the modern periodic table contains elements that are inert gases? _x005F_x000D_ |
| A. | Group 16Â _x005F_x000D_ |
| B. | Group 18 |
| C. | Group 17 |
| D. | Group 15 |
| Answer» C. Group 17 | |
| 44. |
Which group 4A element has the highest ionization energy? |
| A. | Silicon |
| B. | Tin |
| C. | Lead |
| D. | Carbon |
| Answer» E. | |
| 45. |
Which gas is used in tube light? |
| A. | Oxygen |
| B. | Hydrogen |
| C. | Neon |
| D. | Nitric oxide |
| Answer» D. Nitric oxide | |
| 46. |
Which gas is used for the preparation of Soda water? |
| A. | Carbon Dioxide |
| B. | Oxygen |
| C. | Hydrogen |
| D. | Ammonia |
| Answer» B. Oxygen | |
| 47. |
Which gas is known as "Fuel of Future" ? |
| A. | Methane |
| B. | Oxygen |
| C. | Neon |
| D. | Hydrogen |
| Answer» E. | |
| 48. |
Which gas is released when bleaching powder is added to water? |
| A. | Carbon Dioxide |
| B. | Hydrogen |
| C. | Chlorine |
| D. | Carbon Monoxide |
| Answer» D. Carbon Monoxide | |
| 49. |
Which gas is released when water is added to bleaching powder? |
| A. | Oxygen |
| B. | Hydrogen |
| C. | Carbon dioxide |
| D. | Chlorine |
| Answer» E. | |
| 50. |
Which gas is not produced by volcanic eruptions? |
| A. | Methane |
| B. | carbon dioxide |
| C. | sulfur dioxide |
| D. | hydrochloric acid |
| Answer» B. carbon dioxide | |