ICSE 8 Chemistry
Hydrogen
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
(c) both oxidation as well as reduction reaction
(d) Decomposition reaction [Level: Difficult]
Question 8:
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
(c) oxygen & water
(d) oxide & hydrogen [Level: Moderate]
Question 10:
(a) below
(b) left side
(d) right side [Level: Moderate]
Question 11:
Pure hydrogen burns with
(a) pop sound
(c) pale green flame
(d) pale yellow flame [Level: Easy]
Question 12:
Match the statements in List I with appropriate answers in 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
(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
(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
(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
(d) Al [Level: Difficult]
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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.
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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.
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