Daily Practice Problems
ICSE 8 Chemistry
Hydrogen
daily practice problem

Question 1:

Water gas is a mixture of which 2 gases? [Level: Easy]

 

Question 2:

Write the balanced chemical equation for the following conversions:

(a) Iron (III) oxide to Iron by using hydrogen

(b) Carbon to water gas industrially [Level: Moderate]

 

Question 3:

Hydrogen is responsible for producing

(a) fertilisers

(b) vanaspati ghee

(c) ammonia

(d) all of the above [Level: Moderate]

                                                    

Question 4:

Copper does not displace hydrogen from dil. hydrochloric acid but zinc does. Why? [Level: Moderate]

 

Question 5:

In the preparation of hydrogen by electrolysis of water, why water is acidified? [Level: Moderate]

 

Question 6:

What is produced when equal volumes of hydrogen and chlorine are exposed to diffused sunlight? [Level: Easy]

 

Question 7: 

Cl2 + H2S → 2HCl + S

Above mentioned reaction is an example of

(a) only oxidation reaction

(b) only reduction reaction

(c) both oxidation as well as reduction reaction

(d) Decomposition reaction [Level: Difficult]

 

Question 8:

Oxidation is

I. Addition of Oxygen

II. Removal of Hydrogen

III. Removal of Oxygen

IV. Addition of Hydrogen

(a) only IV

(b) only III

(c) only II

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

 

Question 9:

Hydrogen reacts with copper oxide to form

(a) hydride & water

(b) copper & water

(c) oxygen & water

(d) oxide & hydrogen [Level: Moderate]

 

Question 10:

Hydrogen is produced by reaction of water with metals which are __________ hydrogen in metal activity series.

(a) below

(b) left side

(c) above

(d) right side [Level: Moderate]

 

Question 11:

Pure hydrogen burns with

(a) pop sound

(b) pale blue flame  

(c) pale green flame

(d) pale yellow flame [Level: Easy]       

 

Question 12:

Match the statements in List I with appropriate answers in List II.

List I                                                                           List II

1. An atom of hydrogen                                                               A: Chromic oxide

2. A strong oxidising agent                                                          B: Ammonia

3. A promoter used in bosch’s process                                    C: Iron

4. A chemical used in manufacture of fertilisers                   D: One electron

5. Catalyst used in production of basic gas from nitrogen E: Dilute nitric acid

[Level: Moderate]

 

Question 13:

Name the chemicals required to prepare hydrogen in laboratory? [Level: Easy]

Question 14:

Hydrogen can be used as fuel. Give reason. [Level: Moderate]

 

Question 15:

Product formed on combustion of hydrogen in air is

(a) producer gas

(b) water

(c) water gas

(d) methane [Level: Moderate]

 

Question 16:

A foul smelling gas which is produced when hydrogen reacts with a molten non-metal is

(a) ammonia

(b) hydrogen sulphide

(c) hydrogen chloride

(d) carbon monoxide [Level: Difficult]

 

Question 17:

In Bosch process, catalytic reduction of steam to hydrogen is carried out by

(a) CO2

(b) CO

(c) N2

(d) C [Level: Difficult]

 

Question 18:

Which among the following is not used in lab preparation of hydrogen by using Zn?

(a) dil. HCl

(b) dil. HNO3

(c) dil. H2SO4

(d) all of the above [Level: Moderate]

 

Question 19:

Two metals which give hydrogen with cold water. [Level: Easy]

 

Question 20:

Metal which reacts with steam liberating hydrogen & reaction is reversible?

(a) Na

(b) Mg

(c) Fe

(d) Al [Level: Difficult]

**********

Problem-solving on ICSE 8 Chemistry Hydrogen NCERT Chapter 7 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 Hydrogen 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 Hydrogen NCERT Chapter 7, 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 Hydrogen 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 Hydrogen 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 Hydrogen. 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 Hydrogen 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 Hydrogen 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 Hydrogen NCERT Chapter 7

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 Hydrogen NCERT Chapter 7 useful.

Last but not least, to get the best hold on ICSE 8 Chemistry Hydrogen NCERT Chapter 7, do not forget to check out:

  • Hydrogen ICSE 8 Chemistry Best videos
  • Hydrogen ICSE 8 Chemistry NCERT Solutions
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  • Hydrogen ICSE 8 Chemistry DPPs, Download PDF of solutions
  • ICSE 8 Chemistry Hydrogen Online Tests
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