MCQOPTIONS
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MCQOPTIONS
This section includes 36 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Scattering of light takes place in |
| A. | electroplating |
| B. | electrolysis |
| C. | solution of electrolyte |
| D. | colloidal solution |
| Answer» E. | |
| 2. |
Which is used in storage batteries? |
| A. | Copper |
| B. | Lead |
| C. | Tin |
| D. | Zinc |
| Answer» C. Tin | |
| 3. |
Stainless steel contains |
| A. | Fe + Cr + Ni |
| B. | Fe + Ni + Cu |
| C. | Fe + Cr + Cu |
| D. | Fe + C + Ni |
| Answer» B. Fe + Ni + Cu | |
| 4. |
Faraday's law of electrolysis states that mass deposited on electrodes is proportional to |
| A. | Q |
| B. | I |
| C. | Q |
| D. | None of these |
| Answer» D. None of these | |
| 5. |
Which one of the following is not strong electrolyte ? |
| A. | NaCI |
| B. | KNO |
| C. | NH |
| D. | OH |
| E. | FeSO |
| Answer» D. OH | |
| 6. |
The depolarizer used in dry cell batteries is |
| A. | Manganese dioxide |
| B. | NH |
| C. | CI |
| D. | Sodium triphosphide |
| E. | Potassium hydroxide |
| Answer» B. NH | |
| 7. |
Quantity of electricity is measured in |
| A. | Ampere second |
| B. | Ampere |
| C. | Ampere second |
| D. | Ampere |
| E. | second |
| Answer» B. Ampere | |
| 8. |
One of the reference electrons involves the use of |
| A. | CuSO |
| B. | HgCI |
| C. | Hg |
| D. | CI |
| E. | ZnSO |
| Answer» D. CI | |
| 9. |
Which is used in |
| A. | Copper |
| B. | Lead |
| C. | Tin |
| D. | Zinc |
| Answer» C. Tin | |
| 10. |
Scattering of light |
| A. | electroplating |
| B. | electrolysis |
| C. | solution of electrolyte |
| D. | colloidal solution |
| Answer» E. | |
| 11. |
Stainless steel |
| A. | Fe + Cr + Ni |
| B. | Fe + Ni + Cu |
| C. | Fe + Cr + Cu |
| D. | Fe + C + Ni |
| Answer» B. Fe + Ni + Cu | |
| 12. |
Which of the following electrolytic solutions has the least specific conductance ? |
| A. | 0.002 N |
| B. | 0.3 N |
| C. | 4N |
| D. | None of these |
| Answer» B. 0.3 N | |
| 13. |
A smuggler could not carry gold by depositing iron on the gold surface, because |
| A. | Gold has lower standard reduction potential than iron |
| B. | God has higher standard reduction potential than iron |
| C. | Iron rusts |
| D. | Gold in denser |
| Answer» C. Iron rusts | |
| 14. |
To protect iron against corrosion, the durable metal plating on it, is |
| A. | Tin plating |
| B. | Copper plating |
| C. | Zine plating |
| D. | Nickel plating |
| Answer» D. Nickel plating | |
| 15. |
An apparatus used for the measurement of quantity of electricity is |
| A. | Colorimeter |
| B. | Calorimeter |
| C. | Coulometer |
| D. | None of these |
| Answer» D. None of these | |
| 16. |
The conduction of electricity through the electrolyte solution is due to |
| A. | movement of molecules of electrolyte |
| B. | movement of ions of electrolyte |
| C. | movement of separate atom |
| D. | movement of particles of the solvent |
| Answer» C. movement of separate atom | |
| 17. |
Which of the following metals is not attacked by the environment ? |
| A. | Gold |
| B. | Copper |
| C. | Silver |
| D. | Iorn |
| Answer» B. Copper | |
| 18. |
The most powerful reducing agent is |
| A. | K |
| B. | Ba |
| C. | Na |
| D. | Mg |
| Answer» B. Ba | |
| 19. |
On the basis of position in the electrochemcial series, the metal which does not displace hydrogen from water and acids is |
| A. | Al |
| B. | Pb |
| C. | Ba |
| D. | Hg |
| Answer» E. | |
| 20. |
The art of electroplating was given by |
| A. | Edison |
| B. | Faraday |
| C. | Thomas Grahan |
| D. | Brugan |
| Answer» C. Thomas Grahan | |
| 21. |
Use of electrolysis is |
| A. | Electroplating |
| B. | Electrorefining |
| C. | Both (a) and (b) |
| D. | None of these |
| Answer» D. None of these | |
| 22. |
The device which converts chemical energy of fuels directly into electrical energy is |
| A. | Concentration cell |
| B. | Galvanic cell |
| C. | Fuel cell |
| D. | Both (b) and (c) |
| Answer» D. Both (b) and (c) | |
| 23. |
For which of the following cells, the standard cell voltage is zero ? |
| A. | Electrolytic cell |
| B. | Concentration cell |
| C. | Daniel cell |
| D. | Fuel cell |
| Answer» C. Daniel cell | |
| 24. |
Which one is the potential of a hydrogen electrode at oH = 10 ? |
| A. | -0.059 V |
| B. | -0.59 V |
| C. | 0.59V |
| D. | None of these |
| Answer» C. 0.59V | |
| 25. |
Which of the following is moderate conductor of electricity ? |
| A. | Caporundum |
| B. | Diamond |
| C. | Graphite |
| D. | Silica |
| Answer» D. Silica | |
| 26. |
The element with the highest electrical conductivity is |
| A. | Aluminium |
| B. | Copper |
| C. | Gold |
| D. | Silver |
| Answer» E. | |
| 27. |
A conductivity cell is platinised |
| A. | to prolong its service |
| B. | to avoid temperature effect |
| C. | to avoid plarization effect |
| D. | none of the above |
| Answer» D. none of the above | |
| 28. |
Water is non-electrolyte but conducts electricity on dissolving a small amount of |
| A. | Sugar |
| B. | Urea |
| C. | Common salt |
| D. | Acetone |
| Answer» D. Acetone | |
| 29. |
The highest electrical conductivity of the following aqueous solution is |
| A. | 0.1 M acetic acid |
| B. | 0.1 M chloracetic acid |
| C. | 0.1 M difluoroacetic acid |
| D. | None of these |
| Answer» D. None of these | |
| 30. |
Which of the following aqueous solutions will conduct an electric current quite well ? |
| A. | Glycerol |
| B. | HCI |
| C. | Sugar |
| D. | Pure water |
| Answer» C. Sugar | |
| 31. |
During electrolysis, the species discharged at cathode are |
| A. | Cations |
| B. | Anions |
| C. | Ions |
| D. | All of these |
| Answer» B. Anions | |
| 32. |
The best conductor of electricity is a 0.1 M solution of |
| A. | Acetic acid |
| B. | Boric acid |
| C. | Propionic acid |
| D. | Sulphuric acid |
| Answer» E. | |
| 33. |
Which one of the following electrolytes on passing electricity ? |
| A. | Ethanol |
| B. | Propanone |
| C. | Lunar caustic |
| D. | Starch |
| Answer» D. Starch | |
| 34. |
Which of the following cell is a secondary cell ? |
| A. | Dry cell |
| B. | Mercury cell |
| C. | Fuel cell |
| D. | Ni cell |
| Answer» E. | |
| 35. |
The source of electrical energy on the Appolo moon flights was |
| A. | A generator set |
| B. | Fuel cell |
| C. | Ni-Cd Cell |
| D. | Leas storage batteries |
| Answer» C. Ni-Cd Cell | |
| 36. |
When a lead storage battery is charged, it acts as |
| A. | A primary cell |
| B. | A galvanic cell |
| C. | A conentration cell |
| D. | An electrolytic cell |
| Answer» E. | |