Class 9 Practical I

https://www.cbsetuts.com/ncert-class-9-science-lab-manual-melting-point-ice-boiling-point-water/

Class 10 chemistry practicals

Practical Il
https://byjus.com/chemistry/ph-of-samples/

Practical-I
https://byjus.com/chemistry/types-of-reactions-experiment/

Class 7 Science Worksheet-ll

Class8 Science Worksheet-ll

CLASS 10-SCIENE ASSIGNMENT 4

https://drive.google.com/file/d/1dkTd1Za_E3RXmm6c8gJcc5YprpYDEsx7/view?usp=sharing

CLASS 9-SCIENCE ASSIGNMENT 4

https://drive.google.com/file/d/1dkTd1Za_E3RXmm6c8gJcc5YprpYDEsx7/view?usp=sharing

CLASS 7 CHAPTER 4--HEAT NCERT QUESTION ANSWERS

CLASS 7
https://drive.google.com/file/d/1dBr_6fWZMG4q45hPzSwekkaB0_FXFkNt/view?usp=sharing