Why do boron-12 and carbon-13 know as isotones?
Important Questions on Matter and Its States
Match List-I with List-II and select the correct answer using the codes given below the lists.
| List-I (Element) | List-II (Application) |
| A. Isotope of Uranium | 1. Treatment of cancer |
| B. Isotope of cobalt | 2. Treatment of goitre |
| C. Isotope of iodine | 3. Treatment of secondary cancer |
| D. Isotope of radium | 4. Nuclear fuel |
Which of the following is not an Isotope of Hydrogen?
Which isotopes of hydrogen has no neutrons?
1. Protium
2. Deuterium
3. Tritium
Which of the statements given above is/are correct?
Match Column I with Column II and select the correct answer using the codes given below.
| Discovery | Scientist |
| A. Neutron | 1. Goldstein |
| B. Electron | 2. Chadwick |
| C. Proton | 3. J J Thomson |
| D. Atomic Theory | 4. John Dalton |
Codes:
A B C D
Which of the following sets contains the same number of molecules?
1. gram , gram
2. gram , gram
3. gram , gram
4. gram , gram
Which of the following pairs is correctly matched?
| 1. Isotopes | Atoms with the same atomic number but different atomic mass. |
| 2. Isobars | Atoms with the same number of neutrons but a different atomic number. |
| 3. Isotones | Atoms with the same mass number but a different atomic number. |
Codes:
Consider the following statements:
1. Crystalline solids do not have sharp melting points.
2. Amorphous solids are isotropic.
3. Crystalline solids have short-range order of arrangement of constituents.
Which of the statements given above is/are correct?
