Question:
In a slake durability test, the weight loss of a rock sample was \(7\%\). Then its durability index is
In a slake durability test, the weight loss of a rock sample was \(7\%\). Then its durability index is
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For the slake durability test,
\[
\boxed{
I_d(\%)
=
100-\text{Weight loss (\%)}.
}
\]
Updated On: Jul 14, 2026
- \(93\%\)
- \(85\%\)
- \(65\%\)
- \(76\%\)
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The Correct Option is A
Solution and Explanation
Step 1: Recall the definition of slake durability index.
The slake durability index is the percentage of the original sample mass retained after the test.
\[
I_d
=
100-\text{Weight loss (\%)}.
\]
Step 2: Calculate the durability index. Given, \[ \text{Weight loss}=7\%. \] Therefore, \[ I_d = 100-7 = 93\%. \] Hence, \[ \boxed{93\%} \] is the correct answer. Therefore, \[ \boxed{(A)} \] is the correct answer.
Step 2: Calculate the durability index. Given, \[ \text{Weight loss}=7\%. \] Therefore, \[ I_d = 100-7 = 93\%. \] Hence, \[ \boxed{93\%} \] is the correct answer. Therefore, \[ \boxed{(A)} \] is the correct answer.
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