CLASS 8 Chapter 5 Coal and Petroleum

CLASS 8 Chapter 4 Metals and Non- Metals

Short answer type questions Question 1. Name two physical and chemical properties of materials. Question 2. How can we group materials into good and bad conductors of electricity? Question 3. What do you understand by non-metals? Question 4. Define the term sonorous. Question 5. What happens to a copper vessel when it is exposed […]

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CLASS 8 Chapter 5 Coal and Petroleum

Class 8 Chemistry / Neeti Rathore

Question 1. What are the advantages of using CNG and LPG as fuels? Solution 1. The following are the advantages of using compressed natural gas (CNG) and liquid petroleum gas as fuels; They have low prices They are easily available. They do not cause any pollution as they burn with smokeless flame. They leave no

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