RRB Junior Engineer / DMS / CMA 2019 · Question 3453 of 3719
Explantion: Amphoteric oxides are the oxides which can react with both acids and base. For example, Aluminium oxide (Al 2O 3). Aluminium oxide reacts with acids like hydrochloric acid (HCl) and bases like sodium hydroxide (NaOH), to form salt and water. Al 2O 3 + 6 HCl → 2Al 2Cl 3 + 3H 2O (Salt) Al 2O 3 + 2 NaOH → 2 NaAlO 2 + H 2O (Salt)
Source: RRB JE 2019 (CBT 2) (ME) Previous Year Paper (31 Aug 2019) — prepp.in solved-paper PDF (answer key with explanations) · reliable-secondary
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