Class 10 Exam > Class 10 Notes > Science Class 10 > Very Short Questions: Chemical Reactions and Equations
Class 10 Science Chapter 1 Question Answers - Chemical Reactions and Equations
Q1: What happens when magnesium ribbon burns in the air?
Ans: When magnesium ribbon burns in the air, it combines with the oxygen to form magnesium oxide.
2Mg(s) + O2 (g) → 2MgO(s)
Q2: On what chemical law, the balancing of chemical equations is based?
Ans: The balancing of a chemical equation is based on the law of conservation of mass.
Q3: Name the gas that evolved when zinc reacts with dil. HCl.
Ans: Hydrogen gas is evolved.
When HCl , which is an acid goes into the chemical reaction with the Zinc metal, the reaction occurs by vigorously bubbles, which are due to the formation of Hydrogen gas.
Q4: Name and state the law which is kept in mind while we balance a chemical equation.
Ans: Law of conservation of mass. Mass can neither be created nor destroyed during a chemical reaction.
Q5: Write the chemical equation for reactions that take place when lead nitrate and potassium iodide solutions are mixed.
Ans: Pb(NO3)2 + 2KI → 2KNO3 + PbI2
Lead nitrate + Potassium iodide → Potassium nitrate + Leadiodide
Q6: Why is photosynthesis considered an endothermic reaction?
Ans: Photosynthesis is considered an endothermic reaction because heat is absorbed in this process.
Q7: What is precipitate?
Ans: Precipitate is an insoluble metal compound formed after a reaction.
Q8: Why is the combustion of Liquified Petroleum Gas (LPG) a chemical change?
Ans: Combustion of Liquified Petroleum Gas (LPG) is a chemical change because, after its combustion, a new substance is formed and cannot be turned back into LPG.
Q9: What is wrong with the following equation?
Mg + O ➝ MgO
Identify the mistake and balance the equation.
Ans: In this equation, oxygen should be in molecular form (O2).
2Mg + O2 ➝ 2MgO.
Q10: What is meant by the skeletal equation?
Ans: The equation where the number of atoms of each element on both sides of a chemical equation is not equal is called a skeletal equation.
The document Class 10 Science Chapter 1 Question Answers - Chemical Reactions and Equations is a part of the Class 10 Course Science Class 10.
All you need of Class 10 at this link: Class 10
|
85 videos|437 docs|75 tests
|
FAQs on Class 10 Science Chapter 1 Question Answers - Chemical Reactions and Equations
| 1. What is a chemical reaction? |  |
Ans. A chemical reaction is a process in which one or more substances (reactants) are converted into new substances (products) with different chemical properties.
| 2. What is a chemical equation? | |
Ans. A chemical equation is a symbolic representation of a chemical reaction, where the reactants are written on the left side and the products on the right side, separated by an arrow.
| 3. How can we balance a chemical equation? | |
Ans. To balance a chemical equation, we need to ensure that the number of atoms of each element is the same on both sides of the equation. This can be achieved by adjusting the coefficients in front of the reactants and products.
| 4. What are the types of chemical reactions? | |
Ans. There are several types of chemical reactions, including synthesis (combination), decomposition, displacement, precipitation, and combustion reactions.
| 5. What is the importance of chemical reactions in everyday life? | |
Ans. Chemical reactions are essential for various processes in everyday life, such as digestion, respiration, photosynthesis, and the production of various materials like medicines, plastics, and fuels. They play a crucial role in maintaining life and driving various industries.
About this Document
|
4.3K Views |
|
4.86/5 Rating |
|
Nov 22, 2024 Last updated |
Document Description: Very Short Questions: Chemical Reactions and Equations for Class 10 2024 is part of Science Class 10 preparation.
The notes and questions for Very Short Questions: Chemical Reactions and Equations have been prepared according to the Class 10 exam syllabus. Information about Very Short Questions: Chemical Reactions and Equations covers topics
like and Very Short Questions: Chemical Reactions and Equations Example, for Class 10 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Very Short Questions: Chemical Reactions and Equations.
Introduction of Very Short Questions: Chemical Reactions and Equations in English is available as part of our Science Class 10
for Class 10 & Very Short Questions: Chemical Reactions and Equations in Hindi for Science Class 10 course.
Download more important topics related with notes, lectures and mock test series for Class 10
Exam by signing up for free. Class 10: Class 10 Science Chapter 1 Question Answers - Chemical Reactions and Equations
Description
Full syllabus notes, lecture & questions for Class 10 Science Chapter 1 Question Answers - Chemical Reactions and Equations - Class 10 | Plus excerises question with solution to help you revise complete syllabus for Science Class 10 | Best notes, free PDF download
Information about Very Short Questions: Chemical Reactions and Equations
In this doc you can find the meaning of Very Short Questions: Chemical Reactions and Equations defined & explained in the simplest way possible. Besides explaining types of
Very Short Questions: Chemical Reactions and Equations theory, EduRev gives you an ample number of questions to practice Very Short Questions: Chemical Reactions and Equations tests, examples and also practice Class 10
tests
|
Explore Courses for Class 10 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
Free
,Class 10 Science Chapter 1 Question Answers - Chemical Reactions and Equations
,past year papers
,mock tests for examination
,Important questions
,study material
,MCQs
,practice quizzes
,Extra Questions
,Viva Questions
,Summary
,shortcuts and tricks
,Sample Paper
,Objective type Questions
,Exam
,ppt
,Class 10 Science Chapter 1 Question Answers - Chemical Reactions and Equations
,Previous Year Questions with Solutions
,Semester Notes
,video lectures
,Class 10 Science Chapter 1 Question Answers - Chemical Reactions and Equations
;
Additional Information about Very Short Questions: Chemical Reactions and Equations for Class 10 Preparation
Very Short Questions: Chemical Reactions and Equations Free PDF Download
The Very Short Questions: Chemical Reactions and Equations is an invaluable resource that delves deep into the core of the Class 10 exam.
These study notes are curated by experts and cover all the essential topics and concepts, making your preparation more efficient and effective.
With the help of these notes, you can grasp complex subjects quickly, revise important points easily,
and reinforce your understanding of key concepts. The study notes are presented in a concise and easy-to-understand manner,
allowing you to optimize your learning process. Whether you're looking for best-recommended books, sample papers, study material,
or toppers' notes, this PDF has got you covered. Download the Very Short Questions: Chemical Reactions and Equations now and kickstart your journey towards success in the Class 10 exam.
Importance of Very Short Questions: Chemical Reactions and Equations
The importance of Very Short Questions: Chemical Reactions and Equations cannot be overstated, especially for Class 10 aspirants.
This document holds the key to success in the Class 10 exam.
It offers a detailed understanding of the concept, providing invaluable insights into the topic.
By knowing the concepts well in advance, students can plan their preparation effectively.
Utilize this indispensable guide for a well-rounded preparation and achieve your desired results.
Very Short Questions: Chemical Reactions and Equations Notes
Very Short Questions: Chemical Reactions and Equations Notes offer in-depth insights into the specific topic to help you master it with ease.
This comprehensive document covers all aspects related to Very Short Questions: Chemical Reactions and Equations.
It includes detailed information about the exam syllabus, recommended books, and study materials for a well-rounded preparation.
Practice papers and question papers enable you to assess your progress effectively.
Additionally, the paper analysis provides valuable tips for tackling the exam strategically.
Access to Toppers' notes gives you an edge in understanding complex concepts.
Whether you're a beginner or aiming for advanced proficiency, Very Short Questions: Chemical Reactions and Equations Notes on EduRev are your ultimate resource for success.
Very Short Questions: Chemical Reactions and Equations Class 10
The "Very Short Questions: Chemical Reactions and Equations Class 10 Questions" guide is a valuable resource for all aspiring students preparing for the
Class 10 exam. It focuses on providing a wide range of practice questions to help students gauge
their understanding of the exam topics. These questions cover the entire syllabus, ensuring comprehensive preparation.
The guide includes previous years' question papers for students to familiarize themselves with the exam's format and difficulty level.
Additionally, it offers subject-specific question banks, allowing students to focus on weak areas and improve their performance.
Study Very Short Questions: Chemical Reactions and Equations on the App
Students of Class 10 can study Very Short Questions: Chemical Reactions and Equations alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Very Short Questions: Chemical Reactions and Equations,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Very Short Questions: Chemical Reactions and Equations is prepared as per the latest Class 10 syllabus.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup