Daily Practice Problems
Class 9 Science
Matter In Our Surroundings
daily practice problem

Question1.

The rate of evaporation depends upon

(a) surface area

(b) temperature

(c) humidity

(d) all of these

Question 2.

On summer days, I was serving a glass of cold fruit Juice to our guest and I observed water droplet on to the outer wall of the glass, why it happened ?

Question3.

Why sanitizer or acetone gives you cooling sensation?

Question4.

Why our clothes dry faster on windy days?

Question5.

Define the process evaporation.

Question6.

What do you mean by dry ice and what is the process of preparing it?

Question7.

What is latent heat of vaporization?

Question8. 

Mark the incorrect statement for the following.

(a) The arrangement of particles is most ordered in the case of solids.

(b) The states of matter are inter-convertible.

(c) Boiling is a surface phenomenon while Evaporation is a bulk phenomenon.

(d) The rate of evaporation depends upon wind speed.

Question9.

The energy required to change 1 kg of solid into liquid at its melting point is called

(a) latent heat of vaporization.

(b) latent heat of melting.

(c) latent heat of fusion.

(d) latent heat of evaporation.

Question10.

Give the name of following conversion.

Question11.

Convert the following to the Celsius scale:

(a) 398K                    (b) 250K                    (c) 100K

Question12.

Which of the following have high melting point  and what does the melting point indicates -

(a) iodine solid

(b) NaCl solid

(c) solid CO2

(d) ammonium nitrate

Question13.

The rate of diffusion of liquids is -

(a) lower that the solid

(b) equal to solid

(c) higher than the solid

(d) negligible compare to solid

Question14.

The atmospheric pressure at sea level is –

(a) one pascal

(b) zero pascal

(c) three pascals

(d) ten pascals  

Question15.

Effusion is _________.

Question16.

Why camphor left no traces, when I keep it in an open surrounding?

Question17.

Arrange the following

Gas , liquid and solid

In increasing order of –

(a) Kinetic energy  (b) Arrangement particle (c) Rate of Diffusion (d) Compressibility (e) Rigidity

Question18.

1 atmosphere is equal to 

(a) 1.01 × 105 Pa.

(b) 1.01 x 10-14 Pa

(c) 1.10 x 1015 Pa

(d) 10.1  x 1014 Pa

Question19.

Particles in plasma are in form of

(a) ionised particle

(b) electrons

(c) ionises gases

(d) neutrons

Question20.

Match the following:

(a) Pressure                  -           kgm-3

(b) Temperature          -           Pa

(c) Density                    -           m3

(d) Volume                    -           J

(e) Heat                          -           K

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  1. Application of Knowledge: Problem-solving allows you to apply the theoretical concepts of the topic Class 9 Science Matter In Our Surroundings 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 Matter In Our Surroundings NCERT Chapter 1, 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.
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  4. Retention and Recall: Actively engaging in problem-solving reinforces your memory and improves long-term retention. Applying the concepts learned in Matter In Our Surroundings 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 Matter In Our Surroundings 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 Matter In Our Surroundings. 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 Matter In Our Surroundings 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 Matter In Our Surroundings 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 Matter In Our Surroundings NCERT Chapter 1

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 Matter In Our Surroundings NCERT Chapter 1 useful.

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