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Shubham munjal asks : process of building complex substances through utilization of food 
Category : Punjab Board |  On : 2012-04-29 03:36:27
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Rohan manjrekar asks : is there any other name given for substances which directly go into vapour state from solid (sublime)? 
Category : Commerce |  On : 2011-02-07 11:31:47
 
15/02/2011 04:35:10
S.K.Singh
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Arjan wasu asks : Helooo Mam or Sir ...... question is for charging bodies by friction do the bodies need not be of different substances???? 
Category : CBSE & Others |  On : 0000-00-00 12:00:00
 
04/03/2011 10:18:06

Hy

For charging two bodies by friction one must be +vely charged and another one -vely chrged

so for this the substances must be different..

if the substances are same then only heat would be produced with very neglijable charge..

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Viswagopal s asks : XHCO3 & YCO3 r 2 substances of equal molar masses decomposing as shown 2XHCO3 on heating gives water,CO2,X2CO3 YCO3 on heating gives YO,CO2 16.8g of XHCO3gave 6.2gmixture of water & CO2 16.8g of YCO3 gave 8.8g of CO2.Identify the substances  
 On : 2008-12-30 04:06:14
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