Question

One hundred kg paddy is dried from 18% wet basis to 13% wet basis moisture content. The amount of water removed (in kg) from the paddy is _________ (round off to one decimal place).

Hint:

Water removed from a substance can be calculated using the change in moisture content based on the wet basis.

Answer 1

Correct Answer: 5.5

The amount of water removed can be calculated using the wet basis moisture content formula. Wet basis moisture content is given by: \[ \text{Wet basis moisture content} = \frac{\text{Weight of water}}{\text{Total weight}} \times 100 \] For initial moisture content of 18%: \[ \frac{\text{Weight of water initially}}{100} = \frac{18}{100} \times 100 = 18~\text{kg of water in 100 kg of paddy} \] For final moisture content of 13%: \[ \frac{\text{Weight of water final}}{100} = \frac{13}{100} \times 100 = 13~\text{kg of water in 100 kg of paddy} \] So, the water removed is: \[ \text{Water removed} = 18 - 13 = 5~\text{kg} \] Thus, the amount of water removed is: \[ \boxed{5.5~\text{kg}} \]