Daily Practice Problems Elements, Compounds and Mixtures

Question 1:

Which among the following is symbol of Silver?

(a) S

(b) Si

(d) Au [Level: Moderate]

Question 2:

In paper chromatography, stationary phase is

(a) water

(b) alcohol

(d) acetone [Level: Easy]

Question 3:

Which among the following mixture cannot be separated by sublimation?

(a) Sand + iodine

(b) Salt + ammonium chloride

(d) Salt + sugar [Level: Moderate]

Question 4:

Which among the following is separation technique used to separate salt from salt solution?

(a) Sublimation

(b) Evaporation

(d) Sieving [Level: Easy]

Question 5:

Constituent particles of elements can be

(a) atoms or molecules

(b) only molecules

(d) only radicals [Level: Moderate]

Question 6:

Molecular formula of quick lime is

(a) CaO

(b) Ca(OH)₂

(d) CaSO₄ [Level: Moderate]

Question 7:

Composition is variable in case of

(a) compounds

(b) mixtures

(d) both compounds & mixtures [Level: Easy]

Question 8:

During distillation, which among the following process take palce?

(a) Only Vaporisation

(b) Only Condensation

(d) Only boiling [Level: Moderate]

Question 9:

Tina was playing around while Rohan was packing his school bag. He had samples of sand, sawdust & salt which were required to perform certain activity in the school. Accidently, Tina mixed sand, sawdust & salt altogether & started playing with it. Can you suggest a way to separate these 3 components to Rohan? [Level: Difficult]

Question 10:

Give 3 points of difference between mixtures & compounds. [Level: Moderate]

Question 11:

Which among the following is solid-solid homogeneous mixture?

(a) salt + sugar

(b) sand + iron filings

(d) iron filings + sulphur [Level: Moderate]

Question 12:

Rachna took a pure substance & carried out paper chromatography. What would be her observation?

(a) Three spots on stationary phase

(b) Single spot on the stationary phase

(d) Two spots on stationary phase [Level: Difficult]

Question 13:

Give one word answer for the following:

The process of transferring the clean liquid after the solid settles at the bottom of the container. [Level: Easy]

Question 14:

Suppose your teacher has given you liquid-liquid homogeneous mixture having 2 components X & Y. X has boiling point 78⁰C whereas Y has boiling point 100⁰C. Which of the following technique you would use to separate the two liquids?

(a) Distillation

(b) Evaporation

(d) By using separating funnel [Level: Difficult]

Question 15:

Given below are some statements related to compounds. Select the incorrect statement.

(a) Molecules of compounds are formed when 2 or more atoms of different elements combine in a definite ratio.

(b) Original properties of constituent elements are lost & compound with new properties is formed.

(d) Molecular formula of a compound tells us no. of atoms of particular element present in the molecule of a compound. [Level: Difficult]

Question 16:

Given below are some elements. Categorise them into metals, non-metals & metalloids.

Sodium, Boron, Silicon, Potassium, Iron, Mercury, Antimony, Tellurium, Hydrogen, Calcium, Germanium, Oxygen, Arsenic, Nitrogen, Fluorine, Sulphur, Chlorine, Zinc. [Level: Difficult]

Question 17:

Give any 3 advantages of chromatography. [Level: Moderate]

Question 18:

Give one word answer for the following:

Method of separation by which 2 immiscible liquids are separated. [Level: Easy]

Question 19:

Reshma is carrying out simple distillation. Suddenly her instructor gave a liquid-liquid homogeneous mixture having difference in boiling point less than 30⁰C. What change should she make in the experimental setup to separate this mixture? [Level: Moderate]

Question 20:

Which among the following is solid-liquid homogeneous mixture?

(a) sand + water

(b) sawdust + water

(d) sulphur + water [Level: Moderate]

**********

Problem-solving on ICSE 7 Chemistry Elements, Compounds and Mixtures NCERT Chapter 3 after learning a theoretical concept is crucial for several reasons:

Application of Knowledge: Problem-solving allows you to apply the theoretical concepts of the topic ICSE 7 Chemistry Elements, Compounds and Mixtures 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.
Understanding Deeper Concepts: When you encounter problems related to a theoretical concept that you learned in ICSE 7 Chemistry Elements, Compounds and Mixtures NCERT Chapter 3, 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.
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.
Retention and Recall: Actively engaging in problem-solving reinforces your memory and improves long-term retention. Applying the concepts learned in Elements, Compounds and Mixtures ICSE 7 Chemistry in practical scenarios helps you remember them better than passive reading or memorization.
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 Elements, Compounds and Mixtures ICSE 7 Chemistry Notes on LearnoHub.com
Boosting Confidence: Successfully solving problems after learning a theoretical concept boosts your confidence in your abilities to handle Elements, Compounds and Mixtures. This confidence motivates you to tackle more challenging tasks and improves your overall performance in the subject.
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 Elements, Compounds and Mixtures ICSE 7 Chemistry Online Tests at LearnoHub.com.
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.
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.
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 Elements, Compounds and Mixtures ICSE 7 Chemistry 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 ICSE 7 Chemistry Elements, Compounds and Mixtures NCERT Chapter 3

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 ICSE 7 Chemistry Elements, Compounds and Mixtures NCERT Chapter 3 useful.

Last but not least, to get the best hold on ICSE 7 Chemistry Elements, Compounds and Mixtures NCERT Chapter 3, do not forget to check out:

Elements, Compounds and Mixtures ICSE 7 Chemistry Best videos
Elements, Compounds and Mixtures ICSE 7 Chemistry NCERT Solutions
ICSE 7 Chemistry Elements, Compounds and Mixtures Revision notes
Elements, Compounds and Mixtures ICSE 7 Chemistry DPPs, Download PDF of solutions
ICSE 7 Chemistry Elements, Compounds and Mixtures Online Tests
ICSE 7 Chemistry Sample papers