Question

In a study, different material to liquor ratios were used like 1:1.5, 1:3, 1:5, 1:10, 1:15. Higher amount of dye is available for which of the following MLR ratio

• A. 1:15
• B. 1:1.5
• C. 1:10
• D. 1:3

Hint:

Lower MLR increases dye concentration and improves exhaustion efficiency.

Answer 1

The Correct Option is A

Concept: Material to Liquor Ratio (MLR) is defined as the ratio of fabric weight to dye liquor volume. It strongly influences dye concentration, diffusion rate, and exhaustion efficiency.

Step 1: Understand MLR meaning.
Lower MLR means less water relative to fabric, resulting in:
• Higher dye concentration
• Increased dye availability per unit fabric

Step 2: Compare given ratios.

• 1:1.5 → very low liquor, highest dye concentration
• 1:15 → high liquor, low concentration

Step 3: Interpretation.
Although higher MLR means more total dye liquor, the question asks for higher dye availability in terms of concentration per fabric unit, which is maximum at lowest liquor ratio.

Step 4: Final answer.
\[ \boxed{1:1.5} \] Thus, \[ \boxed{\text{Option (B) is correct.}} \]