Question

Mass of 120 yards of cotton yarn is 3 g. The count (Ne) of yarn, (rounded off to one decimal place), is \(\underline{\hspace{2cm}}\).

Hint:

The count of yarn is calculated using the weight and length of the yarn along with a constant (840 for cotton yarn).

Answer 1

Correct Answer: 21

The count \( Ne \) of yarn is given by the formula: \[ Ne = \frac{840 \times \text{Weight of yarn}}{\text{Length of yarn}}. \] Substituting the given values: \[ Ne = \frac{840 \times 3}{120} = 21. \] Thus, the count of yarn is \( 21 \).