Bhai kuch Question Hai.? 1. Copper or steel mai kon sa bdiya hai. 2. Copper per Coting na ho to wah jaldi garam karega kya. 3. Coper per coting na ho to us per white layers lagegi ya nhi. 4. Water proof ka wire kraab ho jai to wah repair hoga ki nhi. Electricians repair nhi karte use. 5. Ye Nikil Cotate kya hai kya jayda hain. Heat Transfer krata hai ya fir bas dikhne ka chamkdaar hota hai. 6. Ye jo nikil cotate hai us kai neechai copper he to hota hai. Ab ye cotate or copper me kon sa bdiya hai. Hai kya is cotete ka use.