The P Block Elements - Result Question 32

####32. Which of the following metal evolves hydrogen on reacting with cold dilute $HNO_3$ ?

[1989]

(a) $Mg$

(b) $Al$

(c) $Fe$

(d) $Cu$.

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Solution:

  1. (a) Magnesium and manganese are the metals that produce hydrogen with dilute nitric acid

$ Mg+2 HNO_3 \longrightarrow Mg(NO_3)_2+H_2 $



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