Question

why copper is used to make hot water tanks and not Steel ​

Answer 1

low specific heat capacity of copper

Answer 2

because the iron (in steel) is more reactive than then copper also it react with hot steam to produce ferrosoferric oxide. Due to which the body of tank will become weaker and weaker. While copper does not react with hot water.

$<marquee style="font-family: Book Antiqua; color: purple" bgcolor="black" direction="up" height="80" >plz Follow Me ☺️❣️❤️❣️</marquee>$