Question:
Scroopy sound is a test for identification of
Scroopy sound is a test for identification of
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Scroopy sound indicates presence of starch-based sizing ingredients on yarn surface.
Updated On: Jun 29, 2026
- Sizing unit
- Sizing ingredient
- Sizing treatment
- Post sizing operation
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The Correct Option is B
Solution and Explanation
Concept:
The scroopy sound test is a simple tactile-auditory method used to identify the presence of starch-based sizing ingredients on yarn. When yarn is rubbed or handled, a characteristic “scroopy” sound indicates stiffness due to starch film on fibres.
Step 1: Understand scroopy sound.
It is produced due to stiffness caused by sizing materials.
Step 2: Identify cause.
Starch and similar sizing ingredients create film stiffness. \[ \text{Scroopy sound} \Rightarrow \text{Starch presence} \]
Step 3: Evaluate options.
• Sizing unit → machine
• Sizing treatment → process
• Post sizing operation → stage
Step 4: Final answer.
\[ \boxed{\text{Sizing ingredient}} \] Thus, \[ \boxed{\text{Option (B) is correct.}} \]
Step 1: Understand scroopy sound.
It is produced due to stiffness caused by sizing materials.
Step 2: Identify cause.
Starch and similar sizing ingredients create film stiffness. \[ \text{Scroopy sound} \Rightarrow \text{Starch presence} \]
Step 3: Evaluate options.
• Sizing unit → machine
• Sizing treatment → process
• Post sizing operation → stage
Step 4: Final answer.
\[ \boxed{\text{Sizing ingredient}} \] Thus, \[ \boxed{\text{Option (B) is correct.}} \]
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