Please solve question 12 a part.
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1.when metals are heated they expand
2.when they are heated in dil HCl it releases hydrogen gas
2.when they are heated in dil HCl it releases hydrogen gas
spardha1:
Thanks for and.
my pleasure
But u have not read the full question. They have asked about 3 metals i.e. Mg, Cu, Fe.
Not about metal property
Ha all metals will expand so that Mg..Cu..Fe they also expand on heating
for 2.along with hydrogen gas Magnesium chloride...copper chloride....and ferrous chloride will form
is it clear
Ya but copper does not react with dilute HCL, because it is less reactive than hydrogen.
All thing are right.
Thanks
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