Easy
In the nitriding process of steel:
- ASteel is heated in an atmosphere of ammonia
- BSteel is made red hot and then cooled
- CSteel is made red hot and then plunged into oil for cooling
- DNone of these
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In the extraction of copper,when molten copper is cooled slowly,blister copper is obtained due to the evolution of which of the following gases?
Medium
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ightarrow Na_2CrO_4 + Fe_2O_3$
$II$. $Na_2CrO_4 + H_2SO_4
ightarrow Na_2Cr_2O_7$
$Na_2CrO_4$ and $Fe_2O_3$ are separated by:
$II$. $Na_2CrO_4 + H_2SO_4 ightarrow Na_2Cr_2O_7$
$Na_2CrO_4$ and $Fe_2O_3$ are separated by:
Medium
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