Question

One hundred kg of paddy grains are taken for hulling process. After hulling, an amount of 20 kg unhusked grain is obtained. The coefficient of hulling is:

• A. 0.20
• B. 0.25
• C. 0.50
• D. 0.80

Hint:

Coefficient of hulling = Hulled grain Total grain. Always subtract unhusked portion first.

Answer 1

The Correct Option is D

Concept: The coefficient of hulling is a measure of the efficiency of the hulling process in removing husk from paddy grains. It represents the fraction of grains that have been successfully hulled (i.e., dehusked) out of the total grains taken for processing. Mathematically, it is defined as: \[ \text{Coefficient of hulling} = \frac{\text{Weight of hulled grains}}{\text{Total weight of paddy grains}} \]

Step 1: Understanding the given data clearly.
We are given:
• Total paddy taken = 100 kg
• Unhulled grains after process = 20 kg

Step 2: Determining hulled grains.
Hulled grains are those grains from which husk has been successfully removed. Since 20 kg remains unhusked, the remaining portion must be hulled: \[ \text{Hulled grains} = 100 - 20 = 80 \text{ kg} \]

Step 3: Applying the formula.
Now substituting into the formula: \[ \text{Coefficient of hulling} = \frac{80}{100} \]

Step 4: Simplifying the expression.
\[ \frac{80}{100} = 0.80 \]

Step 5: Matching with options.
Among the given options, 0.80 corresponds to option (4). Final Conclusion:
The coefficient of hulling is 0.80. Hence, the correct answer is option (4).