Daily Practice Problems
ICSE 8 Chemistry
Chemical Reactions
daily practice problem

Question 1:

Exothermic reactions can continue without external supply of energy. Justify with the help of suitable chemical reaction. [Level: Difficult]

 

Question 2:

The neutral gas released during thermal decomposition of potassium nitrate is

(a) NO2

(b) NO

(c) N2O

(d) O2 [Level: Moderate]

 

Question 3:

The displaced product of displacement reaction of sodium & water

(a) O2

(b) Na2O

(c) O3

(d) H2 [Level: Moderate]

                                                    

Question 4:

Balance the below given reaction & state the type of reaction:

H2O2 à H2O + O2 [Level: Easy]

 

Question 5:

Which is the most reactive element among H & Mg in this equation:

Mg + H2SO4 à MgSO4 + H2 [Level: Moderate]          

 

Question 6:

Direct combination reaction of phosphorus pentoxide with water gives

(a) H3PO3

(b) H3PO4

(c) H3PO2

(d) HPO4 [Level: Difficult]

 

Question 7:

Give an example of reaction where both evolution of heat & light is involved. [Level: Moderate]   

 

Question 8:

Reaction of coke with steam to give water gas is which type of reaction?

(a) Decomposition

(b) Combination

(c) Endothermic

(d) Exothermic [Level: Difficult]

 

Question 9:

CaO + H2O à Ca(OH)2 + heat

Above given reaction is an example of

I. Synthesis reaction

II. Decomposition reaction

III. Exothermic reaction

IV. Endothermic reaction

(a) only I

(b) only III

(c) only IV

(d) both I & III [Level: Difficult]

 

Question 10: 

Give an example of endothermic reaction having S as one of the reactants. [Level: Moderate]

 

Question 11:

Which among the following is a chemical change?

(a) Adding water to quicklime

(b) Dissolution of salt in water  

(c) Solid dry ice to gaseous carbon dioxide

(d) Wetting of window panes in winter [Level: Easy]          

 

Question 12:

Give an example of decomposition reaction in which products formed are

(a) 2 different elements

(b) an element & a compound [Level: Moderate]

 

Question 13:

The chemical change involving zinc and aqueous copper sulphate illustrates which of the following reaction?

(a) Combination

(b) Double displacement

(c) Single displacement

(d) Combustion [Level: Moderate]       

 

Question 14:

Choose the option corresponding to reaction which involves change in state:

(a) NH4Cl à NH3 + HCl

(b)

(c)

(d)   [Level: Difficult]

 

Question 15:

Give an example of neutralisation reaction. [Level: Easy]

 

Question 16:

 

Above given reaction is an example of

I. Synthesis reaction

II. Decomposition reaction

III. Electrochemical reaction

IV. Displacement reaction

(a) only I

(b) only III

(c) only IV

(d) both II & III [Level: Difficult]  

 

Question 17:

Which among the following is an example of endothermic reaction?

(a) 

(b)

(c) N2 + 3H2 2NH3 + heat

(d)   [Level: Moderate]

 

Question 18:

Shreya burnt coal in air. Which type of reaction did she carried out?

(a) Decomposition

(b) Displacement

(c) Double displacement

(d) Combination [Level: Easy]

 

Question 19:

Which among the following chemical reaction is correct?

(a) BaCl2(aq) + H2SO4(aq) à BaHCl(s) + 2H2SO4(aq)

(b)

(c)

(d)

 [Level: Moderate]

 

Question 20:

Give 2 examples of acidic & basic oxides. [Level: Easy]

**********

Problem-solving on ICSE 8 Chemistry Chemical Reactions NCERT Chapter 6 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 ICSE 8 Chemistry Chemical Reactions 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 ICSE 8 Chemistry Chemical Reactions NCERT Chapter 6, 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 Chemical Reactions ICSE 8 Chemistry 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 Chemical Reactions ICSE 8 Chemistry Notes on LearnoHub.com
  6. Boosting Confidence: Successfully solving problems after learning a theoretical concept boosts your confidence in your abilities to handle Chemical Reactions. 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 Chemical Reactions ICSE 8 Chemistry 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 Chemical Reactions ICSE 8 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 8 Chemistry Chemical Reactions NCERT Chapter 6

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 8 Chemistry Chemical Reactions NCERT Chapter 6 useful.

Last but not least, to get the best hold on ICSE 8 Chemistry Chemical Reactions NCERT Chapter 6, do not forget to check out:

  • Chemical Reactions ICSE 8 Chemistry Best videos
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  • Chemical Reactions ICSE 8 Chemistry DPPs, Download PDF of solutions
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