Case Study and Passage Based Questions for Class 9 Science Chapter 4 Structure of Atom

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Case Study Questions for Class 9 Science Chapter 4 Structure of Atom

In CBSE Class 9 Science Paper, Students will have to answer some questions based on Assertion and Reason. There will be a few questions based on case studies and passage based as well. In that, a paragraph will be given, and then questions based on it will be asked.

Here, we have provided case based/passage based questions for Class 9 Science Chapter 4 Structure of Atom. Students can practice these questions for their exam.

Case Study/Passage Based Questions

Question 1:

Read the following and answer any four questions from (i) to (iii).

The maximum number of the electrons which are permitted to be assigned to an energy shell of an atom is called the electron capacity of that shell. The distribution of electrons in different orbits or shell is governed by a scheme known as Bohr-Bury scheme. According to this scheme :
(a) The maximum number of the electrons that can be present in any shell is given by the formula 2n2 where, n is the number of energy level.
(b) The maximum number of electrons that can be accommodated in the outermost shell is 8. Electrons are filled in the shells in a stepwise manner in increasing order of energy of the energy shell.

(i) What is the maximum electrons capacity of N shell?
(a) 24 (b) 8 (c) 18 (d) 32

Answer Answer: (d)

(ii) Identify the element with the configuration K-2, L-8, M-3.
(a) Aluminium (b) Magnesium
(c) Sodium (d) Beryllium

Answer Answer: (a)

(iii) Which of the following configuration represent sodium?
(a) 2, 8, 4 (b) 2, 8, 5
(c) 2, 3 (d) 2, 8, 1

Answer Answer: (d)

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Case study and passage based questions for other chapters of class 9 science is given below.

Chapter 3 Atoms and Molecules

Chapter 4 Structure of Atom

Chapter 10 Gravitation

Chapter 11 Work and Energy

Chapter 13 Why Do We Fall Ill?

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