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. |
Hydrogen bonding is maximum in |
| A. | Ethanol |
| B. | Diethyl Ether |
| C. | Ethyl Chloride |
| D. | Triethyl Amine |
| Answer» B. Diethyl Ether | |
| 2. |
Which one of the following is most electronegative |
| A. | Carbon |
| B. | Silicon |
| C. | Lead |
| D. | Tin |
| Answer» B. Silicon | |
| 3. |
Who modified Bohr's theory by introducing elliptical orbits for electron path |
| A. | Hund |
| B. | Thomson |
| C. | Rutherford |
| D. | Sommerfeld |
| Answer» E. | |
| 4. |
Decrease in atomic number is observed during |
| A. | Alpha Emission |
| B. | Electron Capture |
| C. | Position Emission |
| D. | All of the above |
| Answer» E. | |
| 5. |
The elements with atomic numbers 9, 17, 35, 53, 85 are all |
| A. | Heavy metals |
| B. | Noble gases |
| C. | Light metals |
| D. | Halogens |
| Answer» E. | |
| 6. |
Which one is the most reactive halogen |
| A. | Iodine |
| B. | Bromine |
| C. | Fluorine |
| D. | Chlorine |
| Answer» D. Chlorine | |
| 7. |
Which one is the simplest form of alkane |
| A. | Propane |
| B. | Butane |
| C. | Methane |
| D. | Decane |
| Answer» D. Decane | |
| 8. |
Which one is heaviest naturally-occurring element of the periodic element |
| A. | Iron |
| B. | Thorium |
| C. | Rhodium |
| D. | Uranium |
| Answer» E. | |
| 9. |
Which one is the lightest element in the periodic table |
| A. | Hydrogen |
| B. | Helium |
| C. | Oxygen |
| D. | Carbon |
| Answer» B. Helium | |
| 10. |
How many neutrons does iron have |
| A. | 8 |
| B. | 13 |
| C. | 26 |
| D. | 30 |
| Answer» E. | |
| 11. |
Total number of naturally occurring elements |
| A. | 62 |
| B. | 92 |
| C. | 98 |
| D. | 110 |
| Answer» C. 98 | |
| 12. |
Total number of elements in the Periodic table |
| A. | 112 |
| B. | 115 |
| C. | 118 |
| D. | (d)127 |
| Answer» D. (d)127 | |
| 13. |
Liquid Nitrogen boils at |
| A. | 77 kelvin |
| B. | 82 Kelvin |
| C. | 54 kelvin |
| D. | 97 Kelvin |
| Answer» B. 82 Kelvin | |
| 14. |
Which one element from below list is liquid at room temperature |
| A. | Zinc |
| B. | Argon |
| C. | Lead |
| D. | Bromine |
| Answer» E. | |
| 15. |
What is the atomic number of Oxygen |
| A. | 5 |
| B. | 8 |
| C. | 12 |
| D. | 22 |
| Answer» C. 12 | |
| 16. |
Atomic number is the number equal to |
| A. | Protons |
| B. | Electrons |
| C. | Neutrons |
| D. | None of the above |
| Answer» B. Electrons | |
| 17. |
Who is known as the 'father of modern chemistry' |
| A. | John Dalton |
| B. | Robert Boyle |
| C. | Antoine Lavoisier |
| D. | Democritus |
| Answer» D. Democritus | |
| 18. |
Who first published the periodic table |
| A. | John Dalton |
| B. | Julius Lothar Meyer |
| C. | Henry Moseley |
| D. | Dmitri Mendeleev |
| Answer» E. | |
| 19. |
Which one is a soluble salt in H2O |
| A. | CuS |
| B. | Zn(OH)2 |
| C. | CaCl2 |
| D. | PbCl2 |
| Answer» D. PbCl2 | |
| 20. |
How many electrons in a Hydrogen atom |
| A. | One |
| B. | Two |
| C. | Three |
| D. | Four |
| Answer» B. Two | |
| 21. |
Which one is a naturally occuring noble gas |
| A. | Sodium |
| B. | Potassium |
| C. | Argon |
| D. | Boron |
| Answer» D. Boron | |