Questions
Hydrogen gas is liberated when aluminium is treated with
A) Air
B) Dilute HCl (or) H2SO4
C) NaOH (or) KOH
D) conc. HNO3
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a
all the above
b
only A, B and C
c
only B, C and D
d
only B and C
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Correct option is D
→ Al metal is stable in dry air due to the formation of protective oxide layer on its surface.Therefore H2 gas is not liberated when Al is treated with air.→ →→ Al is passive or reluctant to the action of Conc.HNO3 due to the formation of protective oxide layer on its surface in presence of Conc.HNO3.Similar Questions
Regarding the structure of Al2Cl6 (g) , false statement is
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