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JEE Mains · Chemistry · STD 11 -p-Block elements - I

क्रिया कारकों के निम्न सेटों में से किस दो में \(Al _{2} O _{3} \cdot x H _{2} O\) का उभय धर्मी व्यवहार देखा जाता है ? Set \(1: Al _{2} O _{3} \cdot x H _{2} O\) (s) और \(OH ^{-}\)(जलीय) Set \(2: Al _{2} O _{3} \cdot x H _{2} O\) (s) और \(H _{2} O\) (द्रव) Set \(3: Al _{2} O _{3} \cdot x H _{2} O\) (s) और \(H ^{+}\)(जलीय) Set \(4: Al _{2} O _{3} \cdot x H _{2} O\) (s) और \(NH _{3}\) (जलीय)

  1. A \(1\) और \(2\)
  2. B \(1\) और \(3\)
  3. C \(2\) और \(4\)
  4. D \(3\) और \(4\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(1\) और \(3\)

Step-by-step Solution

Detailed explanation

Aluminium oxide is amphoteric oxide because it shows the properties of the both acidic and basic oxides . It reacts with both acids and bases to form salt and water. \(Al_2O_3 . xH_2O + 2NaOH \longrightarrow NaAlO_2 +H_2O\) \(Al_2O_3 . xH_2O+HCl \longrightarrow AlCl_3 + H_2O\)
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