7. What is called decomposition reaction ? Explain with chemical equation.
:8. State the physical properties of non-metals.
29. Explain the extraction of metals lying at the middle of the activity serie
10. What is reflex action ? Give examples of reflex action. How do involun
and reflex actions differ from each other?
11. Cell division is not only for generating copy of DNA. Why?
2. Explain female reproductive system with the diagram.
13. What is reflection of light ? Write the laws of reflection of light.
24. What is a plane mirror ? State the characteristics of the image forme
mirror.
15. Describe the experiment to prove Ohm's law.
Section D
Tine questions from the Q. no. 46 to 53 (8 questions)
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very simple dear but bahut bada hai
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A decomposition reaction is a reaction in which a compound breaks down into two or more simpler substances. The general form of a decomposition reaction is: AB→A+B. Most decomposition reactions require an input of energy in the form of heat, light, or electricity.
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