- 1(current)
Q. No.Select the correct statements from the following:
Choose the correct answer from the options given below:
| A: | Atoms of all elements are composed of two fundamental particles. |
| B: | The mass of the electron is \(9.10939 \times 10^{-31} \mathrm{~kg} \text {. }\) |
| C: | All the isotopes of a given element show the same chemical properties. |
| D: | Protons and electrons are collectively known as nucleons. |
| E: | Dalton's atomic theory regarded the atom as an ultimate particle of matter. |
| 1. | B, C and E only | 2. | A, B and C only |
| 3. | C, D and E only | 4. | A and E only |
Subtopic: Introduction |
76%
Level 2: 60%+
NEET - 2023
Hints
The mass of a 2.5 mL solution (the density of the solution is 2.15 g/mL) in the correct significant figures is:
| 1. | 5375 × 10–3 g | 2. | 5.4 g |
| 3. | 5.38 g | 4. | 53.75 g |
Subtopic: Introduction |
73%
Level 2: 60%+
NEET - 2022
Hints
- 1(current)
Q. No.
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