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ECAT Practice Chemistry Atomic Structure MCQs Test 3
ECAT Quiz
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ECAT Practice Chemistry Atomic Structure MCQs Test 3

Practice ECAT 2026 Practice Test Chemistry MCQs from Atomic Structure. Get instant results with Explanation.
Practice Quiz 3 for "Atomic Structure" (Chemistry). Total 65 MCQs available, split into 7 quizzes. Challenge yourself with advanced application-based questions. This area is highly tested in ECAT.
General10 MCQs
1. The ground state of hydrogen corresponds to n =
2. The ionization energy of hydrogen is:
3. The radius of the first Bohr orbit of hydrogen (Bohr radius) is approximately:
4. The de Broglie wavelength of a particle is given by:
5. The Heisenberg uncertainty principle states that it is impossible to determine simultaneously the exact position and exact momentum of a particle. The relation is:
General10 MCQs
6. The quantum number that defines the main energy level is:
7. The quantum number that defines the shape of an orbital is:
8. The number of orbitals in a subshell is given by:
9. The maximum number of electrons in a shell is:
10. The maximum number of electrons in a subshell is:

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Conducting Body: UET
Frequency: Quarterly | Time: 100 Minutes
Negative Marking: No

⚡ Test Pattern (Total: 100 MCQs):

Merit Formula: Typically, the aggregate is calculated as: (ECAT × 33.33%) + (FSc Part-I × 16.67%) + (Matric × 50%). However, the respective university may revise its merit calculation formula or admission criteria from time to time. Please confirm the official criteria before applying.

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