MCQ
$\int_0^4 \frac{1}{1+\sqrt{x}} dx =$
- A$\log \left(\frac{e^4}{4}\right)$
- B$\log \left(\frac{e^4}{6}\right)$
- ✓$\log \left(\frac{e^4}{9}\right)$
- D$\log \left(\frac{e^4}{3}\right)$
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$\ce{X ->[K2Cr2O7][dil. H2SO4] Z}$
$\ce{Y ->[NaOH(aq)][\Delta] CH3OH}$
Identify X, Y and Z.