A) 11%
B) 20%
C) 80%
D) 89%
Correct Answer: C
Solution :
Specific rotation of sugar solution is \[\alpha =\frac{angle\text{ }of\text{ }rotation}{length\text{ }of\text{ }tube\times concentration}\] \[=\frac{\theta }{l\times C}\] \[\therefore \] \[C=\frac{\theta }{l\,\,\alpha }\] \[=\frac{0.4}{0.25\times 0.01}\] \[=160\,\,kg/{{m}^{3}}\] Thus, purity of sugar solution \[=\frac{1600}{200}\times 100=80%\]You need to login to perform this action.
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