Daily Practice Problems
Class 9 Science
Structure of The Atom
daily practice problem

Question 1.

What are canal rays?

 

Question 2.

A sub-atomic particle had a charge, equal in magnitude but opposite in sign to that of the electron is _________.

 

Question 3.

If an atom contains one electron and one proton, will it carry any charge or not?

 

Question 4.

Who proposed the model of an atom to be similar to that of a Christmas pudding?

a. Ernest Rutherford

b. J.J. Thomson

c. Dalton

d. Neils Bohr

 

Question 5.

What was Thomson’s model of atom?

 

Question 6.

In the experiment designed by Rutherford the what were the α-particles?

 

Question 7.

Which of the following was not an observation of α-particle scattering experiment?

a. Most of the fast moving α-particles passed straight through the gold foil.

b. Some of the α-particles were deflected by the foil by small angles.

c. One out of every 12000 particles appeared to rebound.

d. While revolving in discrete orbits the electrons do not radiate energy.

 

Question 8.

What were the conclusions of Rutherford’s model of atom?

 

Question 9.

What was Rutherford’s model of atom?

 

Question 10.

Who discovered neutrons?

a. John Dalton

b. J. Chadwick

c. Ernest Rutherford

d. J.J. Thomson

 

Question 11.

Which of the following statement regarding neutron is incorrect?

a. They are positively charged.

b. They have no charge.

c. Their mass is equal to that of proton.

d. They are present in the nucleus of atom.

 

Question 12.

How do we get the mass of an atom?

 

Question 13.

The orbits or shells in an atom are called _______.

 

Question 14.

Helium atom has an atomic mass of 4 u and two protons in its nucleus. How many neutrons does it have?

 

Question 15.

How do you calculate the maximum number of electrons present in a shell?

 

Question 16.

What is the maximum number of electrons in the third orbit?

 

Question 17.

The maximum number of electrons that can be accommodated in the outermost orbit is ______.

 

Question 18.

How will you calculate the valency of fluorine?

 

Question 19.

What is valency?

 

Question 20.

What are isotopes and what are their uses?

**********

Problem-solving on Class 9 Science Structure of The Atom NCERT Chapter 4 after learning a theoretical concept is crucial for several reasons:

  1. Application of Knowledge: Problem-solving allows you to apply the theoretical concepts of the topic Class 9 Science Structure of The Atom you have learned to real-life situations. It helps you bridge the gap between abstract knowledge and practical scenarios, making the learning more relevant and meaningful.
  2. Understanding Deeper Concepts: When you encounter problems related to a theoretical concept that you learned in Class 9 Science Structure of The Atom NCERT Chapter 4, you are forced to delve deeper into its intricacies. This deeper understanding enhances your comprehension of the subject and strengthens your grasp of the underlying principles.
  3. Critical Thinking: Problem-solving encourages critical thinking and analytical skills. It requires you to analyze the problem, identify relevant information, and devise a logical solution. This process sharpens your mind and improves your ability to approach complex challenges effectively.
  4. Retention and Recall: Actively engaging in problem-solving reinforces your memory and improves long-term retention. Applying the concepts learned in Structure of The Atom Class 9 Science in practical scenarios helps you remember them better than passive reading or memorization.
  5. Identifying Knowledge Gaps: When you attempt to solve problems, you may encounter areas where your understanding is lacking. These knowledge gaps become evident during problem-solving, and you can then focus on filling those gaps through further study and practice. You can refer Structure of The Atom Class 9 Science Notes on LearnoHub.com
  6. Boosting Confidence: Successfully solving problems after learning a theoretical concept boosts your confidence in your abilities to handle Structure of The Atom. This confidence motivates you to tackle more challenging tasks and improves your overall performance in the subject.
  7. Preparation for Exams and Challenges: Many exams, especially in science, mathematics, and engineering, involve problem-solving tasks. Regular practice in problem-solving prepares you to face these exams with confidence and perform well. It is also advised to take tests on Structure of The Atom Class 9 Science Online Tests at LearnoHub.com.
  8. Enhancing Creativity: Problem-solving often requires thinking outside the box and exploring various approaches. This fosters creativity and innovation, enabling you to come up with novel solutions to different problems.
  9. Life Skills Development: Problem-solving is a valuable life skill that extends beyond academics. It equips you with the ability to tackle various challenges you may encounter in personal and professional life.
  10. Improving Decision Making: Problem-solving involves making decisions based on available information and logical reasoning. Practicing problem-solving enhances your decision-making skills, making you more effective in making informed choices.

In summary, problem-solving after learning a theoretical concept on CBSE Structure of The Atom Class 9 Science is an essential part of the learning process. It enhances your understanding, critical thinking abilities, and retention of knowledge. Moreover, it equips you with valuable skills that are applicable in academic, personal, and professional contexts.

You must have heard of the phrase “Practice makes a man perfect”. Well, not just a man, practice indeed enhances perfection of every individual.

Practicing questions plays a pivotal role in achieving excellence in exams. Just as the adage goes, "Practice makes perfect," dedicating time to solve a diverse range of exam-related questions yields manifold benefits. Firstly, practicing questions allows students to familiarize themselves with the exam format and types of problems they might encounter. This familiarity instills confidence, reducing anxiety and improving performance on the actual exam day. Secondly, continuous practice sharpens problem-solving skills and enhances critical thinking, enabling students to approach complex problems with clarity and efficiency. Thirdly, it aids in identifying weak areas, allowing students to focus their efforts on improving specific topics. Moreover, practice aids in memory retention, as active engagement with the material reinforces learning. Regular practice also hones time management skills, ensuring that students can allocate appropriate time to each question during the exam. Overall, practicing questions not only boosts exam performance but also instills a deeper understanding of the subject matter, fostering a holistic and effective learning experience.

All About Daily Practice Problems on Class 9 Science Structure of The Atom NCERT Chapter 4

Our Daily Practice Problems (DPPs) offer a diverse range of question types, including Multiple Choice Questions (MCQs) as well as short and long answer types. These questions are categorized into Easy, Moderate, and Difficult levels, allowing students to gradually progress and challenge themselves accordingly. Additionally, comprehensive solutions are provided for each question, available for download in PDF format - Download pdf solutions as well as Download pdf Questions. This approach fosters a holistic learning experience, catering to different learning styles, promoting self-assessment, and improving problem-solving skills. With our well-structured DPPs, students can excel in exams while gaining a deeper understanding of the subject matter. Hope you found the content on Class 9 Science Structure of The Atom NCERT Chapter 4 useful.

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