JEE CHEMISTRY UNIT 02
QUIZ NO 1
TOTAL QUESTIONS = 20
1. Which of the following is the correct value of Planck's constant?;6.626 × 10^-34 J·s;3.142 × 10^-34 J·s;9.81 × 10^-34 J·s;2.718 × 10^-34 J·s;A
A.
B.
C.
D.
2. How many orbitals are present in the 3rd shell?
A. 7
B. 5
C. 9
D. 3
3. The concept of quantized energy levels was first proposed by
A. Heisenberg
B. Einstein
C. Planck
D. Bohr
4. The azimuthal quantum number for an electron in a p-orbital is
A. 3
B. 2
C. 1
D. 0
5. What is the shape of the s-orbital?
A. Spherical
B. Elliptical
C. Dumbbell
D. Complex
6. Which of the following orbitals has the highest energy?
A. 4s
B. 3p
C. 3d
D. 3s
7. Which of the following represents the magnetic quantum number for an electron in a d-orbital?
A. -3 to +3
B. -4 to +4
C. -1 to +1
D. -2 to +2
8. Which orbital is not possible according to quantum mechanics?
A. 3p
B. 5g
C. 2d
D. 4f
9. The number of orbitals in a shell is given by
A. 2n^2
B. n(n+1)
C. n^2
D. n
10. The number of radial nodes in a 3s orbital is
A. 3
B. 2
C. 0
D. 1
11. The maximum number of electrons in an orbital is governed by
A. Pauli's Exclusion Principle
B. Hund's Rule
C. Aufbau Principle
D. Heisenberg's Uncertainty Principle
12. The total spin of two electrons in the same orbital is
A. 0
B. 1/2
C. -1/2
D. 1
13. Which of the following subshells does not exist?
A. 3s
B. 4p
C. 5f
D. 2d
14. The energy of an electron in the nth orbit of a hydrogen atom is proportional to
A. 1/n
B. n^2
C. 1/n^2
D. n
15. The principal quantum number indicates
A. Spin of the electron
B. Shape of the orbital
C. Orientation of the orbital
D. Size of the orbital
16. "The number of electrons in an atom with n=3, l=2 is"
A. 10
B. 6
C. 14
D. 2
17. What is the number of nodal planes in a p-orbital?
A. 0
B. 2
C. 3
D. 1
18. The total number of electrons in an atom with l=1 is
A. 10
B. 8
C. 6
D. 12
19. The maximum number of electrons that can be accommodated in the second shell is
A. 4
B. 2
C. 8
D. 6
20. The uncertainty principle is given by
A. ΔxΔp = h
B. ΔxΔp ≥ h/2π
C. ΔxΔp ≥ h/4π
D. ΔxΔp ≤ h/4π
Submit Quiz
Disclaimer for MCQ Quiz
The questions in this MCQ quiz are intended solely for educational purposes. While we strive to ensure the accuracy of the content, the information provided may not always be up-to-date or complete. The quiz creators are not liable for any misunderstandings, errors, or any consequences arising from the use of this quiz. Participants should verify any information independently before relying on it for any critical decision-making.
इस MCQ क्विज़ के प्रश्न केवल शैक्षिक उद्देश्यों के लिए हैं। हम सामग्री की सटीकता सुनिश्चित करने का प्रयास करते हैं, फिर भी यहां दी गई जानकारी हमेशा अद्यतित या पूर्ण नहीं हो सकती। क्विज़ के निर्माता किसी भी गलतफहमी, त्रुटि या इस क्विज़ के उपयोग से उत्पन्न होने वाले किसी भी परिणाम के लिए उत्तरदायी नहीं हैं। प्रतिभागियों को किसी भी महत्वपूर्ण निर्णय के लिए इस जानकारी पर निर्भर होने से पहले स्वतंत्र रूप से इसकी पुष्टि करनी चाहिए। https://www.pyqonline.com यदि कोई गलती है या कोई सुझाव है तो e-mail करें
[email protected]
