Question:
Identify a phenomenon from the following that the oxygen gas molecules accumulate on the surface of tungsten by means of chemical bonds.
Identify a phenomenon from the following that the oxygen gas molecules accumulate on the surface of tungsten by means of chemical bonds.
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Adsorption through chemical bonds is a different kind from adsorption through weak van der Waals forces.
Updated On: Nov 12, 2026
- Physisorption
- Chemisorption
- Sorption
- Desorption
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept
Adsorption is the accumulation of gas molecules on a solid surface. If weak van der Waals forces hold them, it is physisorption. If chemical bonds hold them, it is chemisorption.
Step 2: Apply to the Question
Oxygen on tungsten forms a bonded oxide-like layer on the metal surface. The molecules are held by chemical bonds.
Step 3: Compare the options
Sorption means adsorption and absorption together, and desorption is the removal of adsorbed gas. Only chemisorption fits bonding by chemical forces.
Final Answer:
The phenomenon is chemisorption. \[ \boxed{\text{(B) }\text{Chemisorption}} \]
Adsorption is the accumulation of gas molecules on a solid surface. If weak van der Waals forces hold them, it is physisorption. If chemical bonds hold them, it is chemisorption.
Step 2: Apply to the Question
Oxygen on tungsten forms a bonded oxide-like layer on the metal surface. The molecules are held by chemical bonds.
Step 3: Compare the options
Sorption means adsorption and absorption together, and desorption is the removal of adsorbed gas. Only chemisorption fits bonding by chemical forces.
Final Answer:
The phenomenon is chemisorption. \[ \boxed{\text{(B) }\text{Chemisorption}} \]
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