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. |
Molecule in which the distance between two adjacent carbon atoms is longest in-- |
| A. | Ethane |
| B. | Ethene |
| C. | Ethyne |
| D. | Benzene |
| Answer» B. Ethene | |
| 2. |
In methane molecule the four hydrogen atoms are arranged as- |
| A. | Square planar |
| B. | Square pyramid |
| C. | Tetrahedral |
| D. | Octahedral |
| Answer» D. Octahedral | |
| 3. |
Tetrahedral nature of bonding in carbon atom was first shown by- |
| A. | Kekule |
| B. | Lewis |
| C. | Kolbe |
| D. | Vant Hoff and le- bel |
| Answer» E. | |
| 4. |
The first organic compound synthesised in the laboratory from its element:- |
| A. | Urea |
| B. | Methane |
| C. | Ethylene |
| D. | Acetic Acid |
| Answer» B. Methane | |
| 5. |
Bond length is shortest in - |
| A. | Methane |
| B. | Acetylene |
| C. | Ethylene |
| D. | Ethane |
| Answer» C. Ethylene | |
| 6. |
The shape of acetylene molecule is- |
| A. | Linear |
| B. | Planar |
| C. | Pyramidal |
| D. | Tetrahedral |
| Answer» B. Planar | |
| 7. |
Who is called the father of chemistry- |
| A. | Faraday |
| B. | Wohler |
| C. | Berzelius |
| D. | Lavoisier |
| Answer» E. | |
| 8. |
Which one is not an organic compound- |
| A. | Ammonium cyanate |
| B. | Marsh gas |
| C. | Urea |
| D. | Cane Sugar |
| Answer» B. Marsh gas | |
| 9. |
Which dynasty did rule over Magadha after Nanda Dynasty- |
| A. | Maurya |
| B. | Sunga |
| C. | Gupta |
| D. | Kushana |
| Answer» B. Sunga | |
| 10. |
Essential constituent of all organic compound is- |
| A. | Nitrogen |
| B. | Sulphur |
| C. | Carbon |
| D. | Hydrogen |
| Answer» D. Hydrogen | |
| 11. |
The scientist who was responsible for the rejection of vital force theory- |
| A. | Berzelius |
| B. | Wohler |
| C. | Avogadro |
| D. | Lavoisier |
| Answer» C. Avogadro | |
| 12. |
The quantity of electricity needed to deposit 127.08 g of copper is- |
| A. | 1 Faraday |
| B. | 4 Coulomb |
| C. | 4 Faraday |
| D. | 1 Ampere |
| Answer» B. 4 Coulomb | |
| 13. |
Vital force theory was put forwarded by- |
| A. | Berzelius |
| B. | Wohler |
| C. | Grignard |
| D. | Kolbe |
| Answer» B. Wohler | |
| 14. |
In how many categories did Megasthenes divide the Indian society |
| A. | Four |
| B. | Five |
| C. | Six |
| D. | Seven |
| Answer» E. | |
| 15. |
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 | |
| 16. |
Quantity of electricity is measured in - |
| A. | Ampere second |
| B. | Ampere |
| C. | Ampere second |
| D. | Ampere-1 second |
| Answer» D. Ampere-1 second | |
| 17. |
Water is non-electrolyte but conducts electricity on dissolving a small amount of- |
| A. | Sugar |
| B. | Urea |
| C. | Common salt |
| D. | Aceton |
| Answer» D. Aceton | |
| 18. |
Which one of the following delectrolytes on pass electricity- |
| A. | Ethanol |
| B. | Propanone |
| C. | Lunar Caustic |
| D. | Starch |
| Answer» D. Starch | |
| 19. |
Pure water does not conduct electricity because it is- |
| A. | Almost not ionised |
| B. | Low boiling |
| C. | Neutral |
| D. | Readily decomposed |
| Answer» B. Low boiling | |
| 20. |
The life span of a Daniell cell may be increased by- |
| A. | Larger Zn electrode |
| B. | Larger Cu Electrode |
| C. | Lowering the temperature |
| D. | Lowering the concentrations5)n6)n7)n8)n |
| Answer» B. Larger Cu Electrode | |
| 21. |
The element with the highest electrical conductivity is- |
| A. | Aluminium |
| B. | Copper |
| C. | Gold |
| D. | Silver |
| Answer» E. | |
| 22. |
Which of the following is moderate conductor of electricity- |
| A. | Carborundum |
| B. | Diamond |
| C. | Graphite |
| D. | Silica |
| Answer» D. Silica | |
| 23. |
When a lead storage battery is charged it acts as- |
| A. | A primary cell |
| B. | A galvanic cell |
| C. | A concentration Cell |
| D. | An Electrolytic cell |
| Answer» E. | |
| 24. |
An apparatus used for the measurement of quantity of electricity is- |
| A. | Colorimeter |
| B. | Calorimeter |
| C. | Coulometer |
| D. | None of the above |
| Answer» D. None of the above | |
| 25. |
The source of electrical energy on the Appolo moon flights was- |
| A. | A generator set |
| B. | Fuel Cell |
| C. | Ni-Cd- cell |
| D. | Lead storage batteries |
| Answer» C. Ni-Cd- cell | |
| 26. |
A conductivity cell is platinised- |
| A. | To prolong its service |
| B. | To avoid temperature effect |
| C. | To avoid polarization effect |
| D. | None of the above |
| Answer» D. None of the above | |
| 27. |
Which of the following cell is a secondary cell- |
| A. | Dry cell |
| B. | Mercury cell |
| C. | fuel Cell |
| D. | Ni cell |
| Answer» E. | |
| 28. |
Language used in the inscriptions of Ashoka is- |
| A. | Sanskrit |
| B. | Prakrit |
| C. | Apabhramsa |
| D. | Hindi |
| Answer» C. Apabhramsa | |
| 29. |
Which of the following metals is not attacked by the environment- |
| A. | Gold |
| B. | Copper |
| C. | Silver |
| D. | Iron |
| Answer» B. Copper | |
| 30. |
the art of electroplating was given by- |
| A. | Edison |
| B. | Faraday |
| C. | Thomas Grahan |
| D. | Brugan |
| Answer» C. Thomas Grahan | |
| 31. |
Corrosion is basically an- |
| A. | Interaction |
| B. | Union between two light metals and a heavy metal |
| C. | Altered reaction in presence of H2O |
| D. | Electrochemical Phenomenon |
| Answer» E. | |
| 32. |
Iron rusts in the presence of - |
| A. | Vacuum |
| B. | Moisture |
| C. | Oxygen |
| D. | Both b and c |
| Answer» C. Oxygen | |
| 33. |
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) | |
| 34. |
The electrochemical cell stops working after some time because- |
| A. | Electrode potential of both the electrodes becomes zero |
| B. | One of electrodes completely vanishes |
| C. | Electrode potential of both electrodes equalizes |
| D. | The reaction reverses its direction |
| Answer» D. The reaction reverses its direction | |
| 35. |
A smuggler could not carry gold by depositing iron on the gold surface, because- |
| A. | Gold has lower standard reduction potential than iron |
| B. | Gold has higher standard reduction potential than iron |
| C. | Iron rusts |
| D. | Gold in denser |
| Answer» C. Iron rusts | |
| 36. |
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 | |
| 37. |
who amongst the following Mauryan rulers did conquer the Deccan ? |
| A. | Ashoka |
| B. | Chandragupta |
| C. | Bindusara |
| D. | Kunala |
| Answer» D. Kunala | |
| 38. |
The calculation of electronegativities was first done by-- |
| A. | Slater |
| B. | Pauling |
| C. | Bohr |
| D. | Mulliken |
| Answer» C. Bohr | |
| 39. |
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. | |
| 40. |
faraday constant- |
| A. | Depends on equivalent |
| B. | It as numerical constant |
| C. | Depends on the number of electrons |
| D. | Depends upon the current passed |
| Answer» C. Depends on the number of electrons | |
| 41. |
The conduction of electricity through the elecrolyte 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 | |
| 42. |
During electrolysis, the species discharged at cathode are- |
| A. | Cations |
| B. | Anions |
| C. | Ions |
| D. | All of these |
| Answer» B. Anions | |
| 43. |
Molten sodium chloride conduts electricity due to the presene of- |
| A. | Free molecules |
| B. | Free electrons |
| C. | Free ions` |
| D. | Atoms of sodium and chlorine |
| Answer» D. Atoms of sodium and chlorine | |
| 44. |
The description of the administration of pataliputra is available in- |
| A. | Divyavadan |
| B. | Arthashastra |
| C. | Indica |
| D. | Ashoka inscriptions |
| Answer» D. Ashoka inscriptions | |
| 45. |
The element that has the highest first ionization potential is -- |
| A. | Boron |
| B. | Nitrogen |
| C. | Oxygen |
| D. | Carbon |
| Answer» C. Oxygen | |
| 46. |
Electron affinity of noble gases is- |
| A. | Almost zero |
| B. | low |
| C. | High |
| D. | Very high |
| Answer» B. low | |
| 47. |
All the elements in a group in the periodic table have the same- |
| A. | Atomic weight |
| B. | Same number of valence electrons |
| C. | Atomic number |
| D. | none of these |
| Answer» C. Atomic number | |
| 48. |
Which of the following element has the lowest electron affinity ? |
| A. | Selenium |
| B. | Arsenic |
| C. | Iodine |
| D. | Argon |
| Answer» E. | |
| 49. |
Which of the following pairs of atomic numbers represent the element belonging to the same group ? |
| A. | 15 and 13 |
| B. | 12 and 21 |
| C. | 14 and 31 |
| D. | 13 and 31 |
| Answer» E. | |
| 50. |
The electron affinity of chlorine is highest than that of fluorine due to - |
| A. | Its highest reactivity |
| B. | Bigger size |
| C. | Difference in their electronic configuration |
| D. | smaller nuclear charge |
| Answer» C. Difference in their electronic configuration | |