Nucleons comprises of______.
- Aprotons and electrons
- Bneutrons and electrons
- ✓protons and neutrons
- Dneutrons and positron
Answer: C.
View full solution →71 questions across 7 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
MCQ
15 Q→02Fill in the blanks.
13 Q→03TRUE & FALSE
9 Q→04Answer In One word.
14 Q→05[ 2 Marks Questions ]
11 Q→06Match The Following
3 Q→07[3 Marks Question]
6 Q→One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
Answer: C.
View full solution →Answer: B.
View full solution →Answer: A.
View full solution →Answer: C.
View full solution →Answer: B.
View full solution →| 1. | Valency | Fe |
| 2. | Neutral particle | Proton |
| 3. | Iron | Electrons in the outermost orbit |
| 4. | Hydrogen | Neutron |
| 5. | Positively charged particle | Monovalent |
| Particle | Charge | Discoverer | |||
| i) | Proton | a) | n | 1. | James Chadwick |
| ii) | Electron | b) | P | 2. | Rutherford |
| iii) | Neutron | c) | e | 3. | J.J. Thomson |
| Element | Symbol | Atomic No. | |||
| i) | Hydrogen | a) | 0 | 1. | 11 |
| ii) | Helium | b) | Al | 2. | 8 |
| iii) | Aluminium | c) | He | 3. | 1 |
| iv) | Oxygen | d) | Na | 4. | 2 |
| v) | Sodium | e) | H | 5. | 13 |
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