eVidyarthi

Main Menu
  • eVidyarthi
  • School
    • Class 6th
      • Maths Class 6
      • Science Class 6
      • Hindi Class 6
      • व्याकरण
      • English Class 6
      • English Grammar
      • Sanskrit Class 6
      • Geography
      • Civics
      • History
    • Class 7th
      • Maths Class 7
      • Science Class 7
      • Hindi Class 7
      • व्याकरण
      • English Class 7
      • English Grammar
      • Sanskrit Class 7
      • Geography
      • Civics
      • History
    • Class 8th
      • Maths Class 8
      • Science Class 8
      • Hindi Class 8
      • व्याकरण
      • English Class 8
      • English Grammar
      • Sanskrit Class 8
      • Geography
      • Civics
      • History
    • Class 9th
      • Maths Class 9
      • Science Class 9
      • Hindi Class 9
      • English Class 9
      • English Grammar
      • व्याकरण
      • Economics Class 9
      • Geography Class 9
      • Civics Class 9
      • History Class 9
    • Class 10th
      • Maths Class 10
      • Science Class 10
      • Hindi Class 10
      • English Class 10
      • English Grammar
      • व्याकरण
      • Economics Class 10
      • History Class 10
      • Civics Class 10
      • Geography Class 10
    • Class 11th
      • Maths Class 11
      • Accounts Class 11
      • English Class 11
      • English Grammar
      • व्याकरण
      • Chemistry Class 11
      • Physics Class 11
      • Biology Class 11
    • Class 12th
      • Maths Class 12
      • Accounts Class 12
      • Chemistry Class 12
      • Physics Class 12
      • Biology Class 12
      • English Class 12
      • English Grammar
      • व्याकरण
    • Close
  • English
    • Basic English Grammar
    • Basic English Speaking
    • English Vocabulary
    • English Idioms & Phrases
    • Personality Enhancement
    • Interview Skills
    • Close
  • Softwares
    • Microsoft Word
    • PhotoShop
    • Excel
    • Illustrator
    • PowerPoint
    • Close
Class 9th Science || Menu
  • Important
    • Sample Papers
    • MCQs
    • NCERT Solutions
    • Revision Notes
    • Science Book
    • Syllabus
    • Close
  • Matter in Our Surroundings
  • Is Matter Around Us Pure
  • Atoms and Molecules
  • Structure of Atom
  • Motion

Laws of Chemical Combination, Class 9 Science

1. There will be total 20 MCQ in this test.
2. Please keep a pen and paper ready for rough work but keep your books away.
3. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number.
4. No negative marking for incorrect choice.
5. Please click on “Finish the Test” when you want to exit.
6. All the best – Happy Studying

1. A student heats 25g of reactant ‘A’ with 50g of reactant ‘B’. He obtains 50g of product ‘C’ and recovers 25 g of unreacted ‘B’. Which of the following law is confirmed in the following reaction?
 
 
 
 

Question 1 of 20

2. Law of conservation of mass can be derived from which postulate of Dalton’s atomic theory?
 
 
 
 

Question 2 of 20

3. 5 grams of compound A reacts with 10 grams of compound B to produce a new compound C. What should be the mass of C according to law of conservation of mass?
 
 
 
 

Question 3 of 20

4. According to Law of conservation of mass, mass of reactants wil be equal to the mass of:
 
 
 
 

Question 4 of 20

5. The reaction used in the experiment to verify the law of conservation of masses is included in which of the following categories?
 
 
 
 

Question 5 of 20

6. The atomic masses and chemical properties of Sulphur and Phosphorus are different. This can be explained on the basis of:
 
 
 
 

Question 6 of 20

7. When CaCO3 is heated, it forms CaO and CO2. Which of these statements best describes the mass of the products if 100 g of CaCO3 is heated?
 
 
 
 

Question 7 of 20

8. According to the law of conservation of mass, 3 g of carbon burnt in 8 g of oxygen forms 11 g of carbon dioxide. Now, what will be the mass of carbon dioxide produced when 3 g of carbon is burnt in 50 g of oxgyen?
 
 
 
 

Question 8 of 20

9. Which of the following statements is true about the law of conservation of mass?
 
 
 
 

Question 9 of 20

10. Which of the following statements is true about ‘Law of conservation of mass”?
 
 
 
 

Question 10 of 20

11. Who gave the Law of constant proportions?
 
 
 
 

Question 11 of 20

12. Which of the following statement is not in accordance with Dalton’s atomic theory?
 
 
 
 

Question 12 of 20

13. Which of the following is the major drawback of Dalton’s atomic theory?
 
 
 
 

Question 13 of 20

14. Which of the following is correct for the ‘Law of Conservation of Mass’?
 
 
 
 

Question 14 of 20

15. The balancing of chemical equation is based upon:
 
 
 
 

Question 15 of 20

16. Which of the following is not a postulate of Dalton’s atomic theory?
 
 
 
 

Question 16 of 20

17. Which type of reaction is being used in the experiment of verifying the law of conservation of mass?
 
 
 
 

Question 17 of 20

18. 9 grams of water decompose to give:
 
 
 
 

Question 18 of 20

19. Who stated the Law of conservation of mass?
 
 
 
 

Question 19 of 20

20. If all the reactants in a chemical reaction are completely used, which of the following statements accurately describes the relationship between the reactants and the products?
 
 
 
 

Question 20 of 20

Loading... Loading…

 

Android App

eVidyarthi

Search On eVidyarthi

Evidyarthi on Facebook

Like us on Facebook

Follow Evidyarthi on Youtube

Learn English
Learn English Through हिन्दी
Job Interview Skills
English Grammar
हिंदी व्याकरण - Vyakaran
Mathematics Class 6th
Science Class 6th
हिन्दी Class 6th
Mathematics Class 7th
Science Class 7th
हिन्दी Class 7th
हिन्दी Class 8th
Mathematics Class 8th
Mathematics Class 9th
English Class 9th
Science Class 9th
Mathematics Class 10th
English Class 10th
Mathematics Class XI
Chemistry Class XI
Accountancy Class 11th
Accountancy Class 12th
Mathematics Class 12th
Microsoft Word
Microsoft Excel
Microsoft PowerPoint
Adobe PhotoShop
Adobe Illustrator
Learn German
Learn French
IIT JEE
Privacy Policies, Contact Us
Copyright © 2020 eVidyarthi and its licensors. All Rights Reserved.