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*[http://www.textbooksonline.tn.nic.in/Books/Std09/Std09-III-SSS-EM-2.pdf Class - IX Heat and Gas Laws ]
*[http://www.textbooksonline.tn.nic.in/Books/Std09/Std09-III-SSS-EM-2.pdf Class - IX Heat and Gas Laws ]
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= Teaching Outlines =
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= Teaching Outlines HEAT =
* Effects of heat : Expansion of solid, liquid and gases.
* Effects of heat : Expansion of solid, liquid and gases.