Chemical Reactions and Equations

Class 10 Chemical Reactions and Equations Page Number 13 Solutions

21 July 2025

1. Why does the colour of copper sulphate solution change when an iron nail is dipped in it? Answer:When an iron nail is dipped into....

Class 10 Chemical Reactions and Equations Page Number 10 Solutions

20 July 2025

1. A solution of a substance ‘X’ is used for whitewashing. 1. এটা পদাৰ্থ ‘X’ ৰ দ্ৰৱক বগা ৰঙ সানিবলৈ  (White Washing) ব্যৱহাৰ কৰা হয়। ....

Chapter 1: Chemical Reactions and Equations Page Number – 6 Solutions for Class 10

20 July 2025

1. Why should a magnesium ribbon be cleaned before burning in air? বায়ুত দহনৰ আগতে মেগনেছিয়ামৰ ফিটা এডাল পৰিষ্কাৰ কৰি ল’ব লাগে কিয়? Answer: Magnesium....

Why should a magnesium ribbon be cleaned before burning in air

20 July 2025

Q. Why should a magnesium ribbon be cleaned before burning in air? Answer: To burn a magnesium ribbon properly, it needs to be cleaned first....