Assertion (A) : Wool has a unique property to produce felt fabrics directly from wool fibres.
Reason (R) : Wool is hygroscopic in nature and has a standard moisture regain of 13.6-16 percent.
In the light of the above statements, choose the most appropriate answer from the options given below :
Assessing Wool Felting Assertion and Reason
This question requires evaluating two statements about wool: Assertion (A) concerning its ability to produce felt, and Reason (R) regarding its hygroscopic nature.
Evaluating Assertion (A): Wool Felt Production
Assertion (A) states that wool has a unique property to produce felt fabrics directly from wool fibres. This statement is correct. Wool fibres possess a unique surface structure (cuticle scales) and natural crimp. When subjected to heat, moisture, and mechanical action (like agitation or friction), these scales cause the fibres to move in one direction and interlock, binding together to form a dense, non-woven fabric known as felt. This is a fundamental characteristic of wool processing.
Evaluating Reason (R): Wool's Hygroscopic Nature
Reason (R) states that wool is hygroscopic (absorbs moisture) and has a standard moisture regain of 13.6-16 percent. This statement is also correct. Wool fibres can absorb moisture vapour from the atmosphere, and the typical regain percentage confirms this property.
Connecting Reason (R) to Assertion (A)
The question asks if Reason (R) correctly explains Assertion (A). While moisture is necessary for the felting process, the hygroscopic nature and moisture regain percentage alone do not fully explain *why* wool can create felt directly from fibres. The primary reasons for the direct felting ability lie in the physical structure of the wool fibre:
- Cuticle Scales: The overlapping scales on the fibre surface act like tiny hooks, allowing fibres to snag and lock into each other when agitated, especially in the presence of moisture and heat.
- Crimp: The natural waviness (crimp) of wool fibres helps them spring back and interlock more effectively during the felting process.
- Elasticity: Wool fibres can be stretched and compressed, aiding the interlocking mechanism.
Therefore, while wool's hygroscopic nature (R) facilitates the felting process, it is not the direct explanation for the *unique ability* of wool fibres to form felt directly. The structural properties mentioned above are the direct cause.
Conclusion on Statements
Both Assertion (A) and Reason (R) are factually correct statements about wool. However, Reason (R) does not provide the correct or complete explanation for Assertion (A).
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Important Questions from Mixed Topic (CUET PG)
- Who was the founder of Bolshevik Communist party?
- What is the key guide to statecraft in the realist tradition?
- Chronologically arrange the events in the Cold War period.
A. Berlin Wall is constructed
B. Communist China joins the UN
C. Soviet invasion of Czechoslovakia
D. Berlin Blockade
Choose the correct answer from the options given below: Morgenthau's principles of political realism are:
A. Politics is rooted in permanent and unchanging human nature which is basically self centred, self-regarding and self-interested
B. Politics is an autonomous sphere of action and cannot therefore be reduced to morals
C. International Politics is an arena of conflicting self-interests
D. The ethics of international relations is situational ethics which is very different from private morality
Choose the correct answer from the options given below:Who among the following political thinkers consider the anarchical self help system to be a compelling factor for States to maximise their relative power positions?
