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A sample of clay contains 40% sillica and 15% water. The sample is partially dried by which it loses 5 gm water. If the percentage of water in the partially dried clay is 8, calculate the percentage of silica in the partially dried clay.
  • a)
    21.33%
  • b)
    43.29%
  • c)
    75%
  • d)
    50%
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A sample of clay contains 40% sillica and 15% water. The sample is par...
 
Clay original sample contains 40% silica , 15% water so total non water component is 100 - 15 = 85 gram .Now sample is partially dried and loses 5 gram water .Again dried clay contains 8 % water means 8 g water . Therefore total non water component is 100-8 = 92 gram.Now percent of silica in partially dried sample will be 40/85×92= 43.29%
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Most Upvoted Answer
A sample of clay contains 40% sillica and 15% water. The sample is par...
Given:
- Clay contains 40% silica and 15% water
- Clay loses 5 gm of water
- Partially dried clay contains 8% water

To find:
- Percentage of silica in the partially dried clay

Solution:
Let's assume the original weight of the clay sample to be 100 grams.

- The amount of silica in the clay = 40% of 100 grams = 40 grams
- The amount of water in the clay = 15% of 100 grams = 15 grams

After losing 5 gm of water, the weight of the clay sample becomes 95 gm.

- The new amount of water in the clay = 15 - 5 = 10 grams
- The percentage of water in the partially dried clay = (10/95) x 100% = 10.53%

Let x be the percentage of silica in the partially dried clay.

- The new amount of silica in the clay = 95 - 10 = 85 grams
- The percentage of silica in the partially dried clay = (x/100) x 95 = 85
- Solving for x, we get x = 43.29%

Therefore, the percentage of silica in the partially dried clay is 43.29%.

Answer: Option B (43.29%)
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A sample of clay contains 40% sillica and 15% water. The sample is partially dried by which it loses 5 gm water. If the percentage of water in the partially dried clay is 8, calculate the percentage of silica in the partially dried clay.a)21.33%b)43.29%c)75%d)50%Correct answer is option 'B'. Can you explain this answer?
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