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. |
"Paramagnetism" is the property of |
| A. | Paired electrons |
| B. | Completely filled electronics subshells |
| C. | Unpaired electrons |
| D. | Completely vacant electronic subshells |
| Answer» D. Completely vacant electronic subshells | |
| 2. |
The coordination number of body centered atom in cubic structure is |
| A. | 4 |
| B. | 6 |
| C. | 8 |
| D. | 10 |
| Answer» D. 10 | |
| 3. |
The structure of NaCl crystal is |
| A. | Body centered cubic |
| B. | Face centered cubic |
| C. | Octahedral |
| D. | Square planar |
| Answer» C. Octahedral | |
| 4. |
Which of the following has the highest lattice energy |
| A. | KF |
| B. | CsF |
| C. | NaF |
| D. | RbF |
| Answer» D. RbF | |
| 5. |
Which one of the following is most acidic |
| A. | Al22O3 |
| B. | Na2O |
| C. | MgO |
| D. | CaO |
| Answer» B. Na2O | |
| 6. |
Which of the following has no unit |
| A. | Electronegativity |
| B. | Electron affinity |
| C. | Ionization energy |
| D. | Excitation potential |
| Answer» B. Electron affinity | |
| 7. |
The element with highest ionization potential is |
| A. | Oxygen |
| B. | Carbon |
| C. | Helium |
| D. | Boron |
| Answer» D. Boron | |
| 8. |
A subshell with l=2 can take up |
| A. | 3 electron |
| B. | 5 electron |
| C. | 8 electron |
| D. | 10 electron |
| Answer» E. | |
| 9. |
Sodium is produced by the electrolysis of |
| A. | Molten sodium carbonate |
| B. | Molten sodium chloride |
| C. | Aqueous brine solution |
| D. | Its cyanide complex |
| Answer» C. Aqueous brine solution | |
| 10. |
The lightest gas which is non-inflammable is |
| A. | Hydrogen |
| B. | Helium |
| C. | Oxygen |
| D. | Nitrogen |
| Answer» C. Oxygen | |
| 11. |
Aluminium chloride is |
| A. | Bronsted Lowry Acid |
| B. | Arrhenius Acid |
| C. | Lewis Acid |
| D. | Lewis Base |
| Answer» D. Lewis Base | |
| 12. |
Emulsifier is an agent which |
| A. | Accelerates the dispersion |
| B. | Homogenizes the emulsion |
| C. | Stabilizes an emulsion |
| D. | Aids the flocculation of emulsion |
| Answer» D. Aids the flocculation of emulsion | |
| 13. |
For a spontaneous chemical process, the free energy change is |
| A. | Positive |
| B. | Negative |
| C. | Zero |
| D. | Depends on whether the reation is exothermic or endothermic |
| Answer» C. Zero | |
| 14. |
Entropy of Universe is always |
| A. | Decreasing |
| B. | Zero |
| C. | Constant |
| D. | Increasing |
| Answer» E. | |
| 15. |
The minimum energy required for an effective collision is |
| A. | Threshold energy |
| B. | Activation energy |
| C. | Free energy |
| D. | Internal energy |
| Answer» C. Free energy | |
| 16. |
The influence of temperature on reaction rate is predicted by |
| A. | van der Waals equation |
| B. | Kirchhoff's equation |
| C. | Arrhenius equation |
| D. | Lewis equation |
| Answer» D. Lewis equation | |
| 17. |
Neoprene is a polymer of |
| A. | Chloroprene |
| B. | Isoprene |
| C. | Isobutane |
| D. | Isopentane |
| Answer» B. Isoprene | |
| 18. |
Peptization is a process of |
| A. | precipitation of colloidal particles |
| B. | purification of colloids |
| C. | protection of colloidal solution |
| D. | dispersing precipitates into colloidal solution |
| Answer» E. | |
| 19. |
Molten sodium chloride conducts electricity due to the presence of |
| A. | free ions |
| B. | free atoms |
| C. | free electrons |
| D. | free molecules |
| Answer» B. free atoms | |
| 20. |
The metal ion present in Vitamin B12 is |
| A. | Nickel |
| B. | Cobalt |
| C. | Iron |
| D. | Zinc |
| Answer» C. Iron | |
| 21. |
Potassium is extracted by the electrolysis of |
| A. | KCI |
| B. | KBr |
| C. | fused KOH |
| D. | None of the above |
| Answer» D. None of the above | |
| 22. |
Which of the following has a fundamental unit only |
| A. | Time |
| B. | Force |
| C. | Volume |
| D. | Velocity |
| Answer» B. Force | |
| 23. |
Which one is not a primary greenhouse gases in the Earth's atmosphere |
| A. | Carbon dioxide |
| B. | Methane |
| C. | Nitrogen |
| D. | Ozone |
| Answer» D. Ozone | |
| 24. |
The length of double bond is __ than single bond |
| A. | Shorter |
| B. | Longer |
| C. | Of same lenght |
| D. | None of the above |
| Answer» B. Longer | |
| 25. |
In a Carbonyl group a carbon atom makes double bond with |
| A. | Carbon |
| B. | Oxygen |
| C. | Hydrogen |
| D. | None of the above |
| Answer» C. Hydrogen | |
| 26. |
How many atoms of oxygen are in a glucose molecule |
| A. | 3 |
| B. | 4 |
| C. | 6 |
| D. | 10 |
| Answer» D. 10 | |
| 27. |
Which color is produce by Arsenic during flame test |
| A. | Green |
| B. | Red |
| C. | Crimson |
| D. | Blue |
| Answer» E. | |
| 28. |
Which one is the simplest aromatic hydrocarbon |
| A. | Aspirin |
| B. | Benzene |
| C. | Chloride |
| D. | Picric acid |
| Answer» C. Chloride | |
| 29. |
Number of hydrogen atoms in a Glucose molecule |
| A. | 6 |
| B. | 8 |
| C. | 12 |
| D. | 14 |
| Answer» D. 14 | |
| 30. |
Except mercury which is the other metal that is liquid at standard conditions for temperature and pressure |
| A. | Lead |
| B. | Bromine |
| C. | Barium |
| D. | Magnesium |
| Answer» C. Barium | |
| 31. |
What is the chemical symbol of mercury |
| A. | Mr |
| B. | Mg |
| C. | Hg |
| D. | None of the above |
| Answer» D. None of the above | |
| 32. |
What is the atomic number of mercury |
| A. | 32 |
| B. | 41 |
| C. | 63 |
| D. | 80 |
| Answer» E. | |
| 33. |
Plastic is a type of |
| A. | Polyester |
| B. | Polymer |
| C. | Acrylic |
| D. | None of the above |
| Answer» C. Acrylic | |
| 34. |
Which one element has the highest electronegativity value |
| A. | Lithium |
| B. | Nitrogen |
| C. | Chlorine |
| D. | Fluorine |
| Answer» E. | |
| 35. |
Which one element has the lowest electronegativity value |
| A. | Fluorine |
| B. | Chlorine |
| C. | Francium |
| D. | Radium |
| Answer» D. Radium | |
| 36. |
Nylon is a type of |
| A. | Polyamide |
| B. | Polyolefin |
| C. | Polyester |
| D. | Acrylic |
| Answer» B. Polyolefin | |
| 37. |
Which one is the most dense liquid from the below |
| A. | Water |
| B. | Choloform |
| C. | Gasolin |
| D. | None of the above |
| Answer» C. Gasolin | |
| 38. |
Normal rainwater is slightly acidic due to the presence of |
| A. | Carbon dioxide |
| B. | Sulphur dioxide |
| C. | Methane |
| D. | None of the above |
| Answer» B. Sulphur dioxide | |
| 39. |
Normal rainwater has a pH level of |
| A. | 3.2 |
| B. | 5.6 |
| C. | 6.3 |
| D. | 8.3 |
| Answer» C. 6.3 | |
| 40. |
What is the mass percentage of oxygen in carbon dioxide (CO2) |
| A. | 30.5% |
| B. | 50.9 % |
| C. | 65.8 % |
| D. | 72.7 % |
| Answer» E. | |
| 41. |
What is the mass percentage of carbon in carbon dioxide (CO2) |
| A. | 15.8 % |
| B. | 20.1 % |
| C. | 27.3 % |
| D. | 32.3 % |
| Answer» D. 32.3 % | |
| 42. |
Which one is the naturally occuring heaviest element |
| A. | Mercury |
| B. | Thorium |
| C. | Uranium |
| D. | Protactinium |
| Answer» D. Protactinium | |
| 43. |
Total number of halogen elements found in the periodic table is |
| A. | 3 |
| B. | 5 |
| C. | 8 |
| D. | 13 |
| Answer» C. 8 | |
| 44. |
Which one is the most reactive gaseous element |
| A. | Chlorine |
| B. | Bromine |
| C. | Iodine |
| D. | Flourine |
| Answer» E. | |
| 45. |
Which one is the purest form of carbon |
| A. | Coal |
| B. | Graphite |
| C. | Diamond |
| D. | Iron |
| Answer» D. Iron | |
| 46. |
Which one is not a pure form of carbon |
| A. | Coal |
| B. | Graphite |
| C. | Diamond |
| D. | Gold |
| Answer» E. | |
| 47. |
Marie Curie received Nobel Prize in Chemistry |
| A. | 1904 |
| B. | 1908 |
| C. | 1911 |
| D. | 1915 |
| Answer» D. 1915 | |
| 48. |
Which gas is most stable at room temperature |
| A. | H2 |
| B. | N2 |
| C. | F2 |
| D. | O2 |
| Answer» C. F2 | |
| 49. |
In nuclear reactors heavy water is used as a |
| A. | Fuel |
| B. | Projectile |
| C. | Moderator |
| D. | Arestor |
| Answer» D. Arestor | |
| 50. |
In ice, the number of hydrogen bonds per water molecule is |
| A. | 1 |
| B. | 2 |
| C. | 4 |
| D. | 8 |
| Answer» D. 8 | |