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 molecules is joined by a double covalent bond? |
| A. | Cl2 |
| B. | O2 |
| C. | N2 |
| D. | He2 |
| Answer» C. N2 | |
| 2. |
which of the following molecule contains a nonpolar covalent bond? |
| A. | Br2 |
| B. | CO2 |
| C. | CCl4 |
| D. | CO |
| Answer» B. CO2 | |
| 3. |
Which of the following mixtures is not a colloid? |
| A. | Sugar water |
| B. | Milk |
| C. | Paint |
| D. | Fog |
| Answer» B. Milk | |
| 4. |
Which of the following methods will separate water from muddy water? |
| A. | Separating funnel |
| B. | Distillation |
| C. | Crystallization |
| D. | Filtration |
| Answer» E. | |
| 5. |
Which of the following metals reacts vigorously with cold water? |
| A. | Potassium |
| B. | Aluminium |
| C. | Zinc |
| D. | Iron |
| Answer» B. Aluminium | |
| 6. |
Which of the following metals is the most Malleable? |
| A. | Al |
| B. | Zn |
| C. | Na |
| D. | Ag |
| Answer» D. Ag | |
| 7. |
Which of the following metals does NOT react with Oxygen even at a high temperature? |
| A. | Silver |
| B. | Lead |
| C. | Aluminium |
| D. | Zinc |
| Answer» B. Lead | |
| 8. |
Which of the following metals does NOT react with cold or hot water? |
| A. | Aluminium |
| B. | Potassium |
| C. | Sodium |
| D. | Calcium |
| Answer» B. Potassium | |
| 9. |
Which of the following metals is found in free state? |
| A. | Sodium |
| B. | Gold |
| C. | Potassium |
| D. | Calcium |
| Answer» C. Potassium | |
| 10. |
Which of the following metals is a liquid at room temperature? |
| A. | Lithium |
| B. | Mercury |
| C. | Sodium |
| D. | Calcium |
| Answer» D. Calcium | |
| 11. |
Which of the following metals cannot be easily cut with a knife? |
| A. | Sodium |
| B. | Aluminium |
| C. | Lithium |
| D. | Potassium |
| Answer» C. Lithium | |
| 12. |
Which of the following metal is generally used for making filaments of bulb? |
| A. | W |
| B. | Ag |
| C. | Fe |
| D. | Rh |
| Answer» B. Ag | |
| 13. |
Which of the following meals is NOT obtained by reduction using carbon? |
| A. | Copper |
| B. | Sodium |
| C. | Iron |
| D. | Zinc |
| Answer» C. Iron | |
| 14. |
Which of the following is usually not an airÂpollutant? |
| A. | Hydrocarbons |
| B. | Sulphur dioxide |
| C. | Carbon dioxide |
| D. | Nitrous oxide |
| Answer» E. | |
| 15. |
Which of the following is used to preserve specimens in the biology laboratory? |
| A. | Phenol |
| B. | Benzaldehyde |
| C. | Formaldehyde |
| D. | Acetic acid |
| Answer» D. Acetic acid | |
| 16. |
Which of the following is used to get relief when you have been stung by a honeybee? |
| A. | Common salt |
| B. | Baking soda |
| C. | Acetic acid |
| D. | Washing soda |
| Answer» C. Acetic acid | |
| 17. |
Which of the following is used in gunpowder? |
| A. | Potassium bromide |
| B. | Potassium nitrate |
| C. | Monopotassium tartarate |
| D. | Potassium sulphate |
| Answer» C. Monopotassium tartarate | |
| 18. |
Which of the following is used in the preparation of vinegar? |
| A. | Methanol |
| B. | Acetic acid |
| C. | Ethanol |
| D. | Ethanoic acid |
| Answer» C. Ethanol | |
| 19. |
Which of the following is used in making perfumes as well as flavouring agents?_x005F_x000D_ |
| A. | Esters |
| B. | Ethanol |
| C. | Methanol |
| D. | Ethanoic acid |
| Answer» B. Ethanol | |
| 20. |
Which of the following is used for disinfecting drinking water? |
| A. | Baking powder |
| B. | Bleaching powder |
| C. | Washing soda |
| D. | Baking soda |
| Answer» C. Washing soda | |
| 21. |
Which of the following is true about compounds? |
| A. | They are substances |
| B. | They have properties similar to those of their component elements |
| C. | They can be physically separated into their component elements |
| D. | They have compositions that vary |
| Answer» B. They have properties similar to those of their component elements | |
| 22. |
Which of the following is used as anaesthetics? |
| A. | N2 |
| B. | N2O |
| C. | CH4 |
| D. | CO2 |
| Answer» C. CH4 | |
| 23. |
Which of the following is used as a catalyst in the hydrogenation of vegetable oil?_x005F_x000D_ |
| A. | He |
| B. | H2 |
| C. | Ni |
| D. | Pb |
| Answer» D. Pb | |
| 24. |
Which of the following is used as non stick coating for cooking utensils? |
| A. | Perspex |
| B. | Styrofoam |
| C. | Polystyrene |
| D. | Teflon |
| Answer» E. | |
| 25. |
Which of the following is the third member of the Dobereiner triad, that also features Lithium and Sodium?_x005F_x000D_ |
| A. | Potassium |
| B. | Boron |
| C. | Barium |
| D. | Hydrogen |
| Answer» B. Boron | |
| 26. |
Which of the following is the most stable carbocation?_x005F_x000D_ |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 1 |
| Answer» D. 1 | |
| 27. |
Which of the following is the strongest acid? |
| A. | ClCH2COOH |
| B. | BrCH2COOH |
| C. | FCH2COOH |
| D. | ICH2COOH |
| Answer» D. ICH2COOH | |
| 28. |
Which of the following is the strongest base? |
| A. | LiCH3 |
| B. | LiF |
| C. | LiOH |
| D. | LiNH2 |
| Answer» B. LiF | |
| 29. |
Which of the following is the most common kidney stone-forming compound? |
| A. | Calcium oxalate |
| B. | Magnesium oxide |
| C. | Sodium bicarbonate |
| D. | Magnesium citrate |
| Answer» B. Magnesium oxide | |
| 30. |
Which of the following is the mixture |
| A. | distilled water |
| B. | gasoline |
| C. | liquified petroleum gas |
| D. | both (b) & (c) |
| Answer» E. | |
| 31. |
Which of the following is one of the commercial products obtained from Gelidium and Gracilaria and are used to grow microbes and in preparations of ice-Â creams and jellies? |
| A. | Agar |
| B. | Chlorella |
| C. | Spirullina |
| D. | Gymnosperms |
| Answer» B. Chlorella | |
| 32. |
Which of the following is the best fire-extinguisher? |
| A. | Water |
| B. | Oxygen |
| C. | Carbon-dioxide |
| D. | Soil |
| Answer» D. Soil | |
| 33. |
Which of the following is NOT true for the reaction of Calcium with water? |
| A. | The reaction is less violent |
| B. | Calcium starts floating |
| C. | Heat evolved is less |
| D. | H2 gas is evolved |
| Answer» B. Calcium starts floating | |
| 34. |
Which of the following is not the properties of an ionic compound? |
| A. | Soluble in water and insoluble in petrol |
| B. | High melting and boiling points |
| C. | Low melting and boiling points |
| D. | Solid and hard |
| Answer» D. Solid and hard | |
| 35. |
Which of the following is NOT the combined from of carbon? |
| A. | Diamond |
| B. | Dolomite |
| C. | Marble |
| D. | Chalk |
| Answer» B. Dolomite | |
| 36. |
Which of the following is NOT malleable? |
| A. | Copper |
| B. | Graphite |
| C. | Silver |
| D. | Aluminium |
| Answer» C. Silver | |
| 37. |
Which of the following is not an example of a biomass energy source? |
| A. | Wood |
| B. | Ethanol |
| C. | Cow dung |
| D. | Atomic energy |
| Answer» E. | |
| 38. |
Which of the following is not correct with reference to Bio-sand Water Filter? |
| A. | It deactivates or kills pathogens |
| B. | Sedimentation removes larger particles |
| C. | Filtration removes smaller particles |
| D. | High quality water is always assured |
| Answer» E. | |
| 39. |
Which of the following is not an Igneous Rock? |
| A. | Dolomite |
| B. | Granite |
| C. | Basalt |
| D. | Gabbro |
| Answer» B. Granite | |
| 40. |
Which of the following is not an example of Allotrope? |
| A. | Diamond |
| B. | Graphite |
| C. | Ozone |
| D. | Steel |
| Answer» E. | |
| 41. |
Which of the following is not an allotrope of carbon? |
| A. | Diamond |
| B. | Graphene |
| C. | Ethylene |
| D. | Buckminsterfullerene |
| Answer» D. Buckminsterfullerene | |
| 42. |
Which of the following is NOT an allotrope of carbon?_x005F_x000D_ |
| A. | Diamond |
| B. | Graphite |
| C. | C-60 |
| D. | Methane |
| Answer» E. | |
| 43. |
Which of the following is NOT a waste material removed from blood in the kidney?_x005F_x000D_ |
| A. | Ammonia |
| B. | Carbon dioxide |
| C. | Urea |
| D. | Uric acid |
| Answer» C. Urea | |
| 44. |
Which of the following is not a type of chemical weathering? |
| A. | Corrosion |
| B. | Solution |
| C. | Oxidation |
| D. | Carbonation |
| Answer» B. Solution | |
| 45. |
Which of the following is not a sublimable substance?_x005F_x000D_ Â _x005F_x000D_ |
| A. | Sodium sulphate |
| B. | Naphathalene |
| C. | Camphor |
| D. | Ammonium chloride |
| Answer» B. Naphathalene | |
| 46. |
Which of the following is not a subatomic particle? |
| A. | neutron |
| B. | ion |
| C. | electron |
| D. | proton |
| Answer» C. electron | |
| 47. |
Which of the following is not a strong acid? |
| A. | H2SO4 |
| B. | CH3COOH |
| C. | HCl |
| D. | HBr |
| Answer» C. HCl | |
| 48. |
Which of the following is not a pure substance? |
| A. | Oxygen |
| B. | Carbon dioxide |
| C. | Water |
| D. | Milk |
| Answer» E. | |
| 49. |
Which of the following is NOT a property of acids? |
| A. | Acids form salts with bases |
| B. | Acids have bitter taste |
| C. | Acids have sour taste |
| D. | Acids turn blue litmus red |
| Answer» C. Acids have sour taste | |
| 50. |
Which of the following is not a property of water? |
| A. | Low density |
| B. | Low specific heat |
| C. | Low heat of vaporisation |
| D. | All of the above |
| Answer» E. | |