For a substance A, undergoing parallel chemical reaction as shown :

Starting with only A at 1 M concentration, identify the statements which is not correct?

(a)

$(0.693+1.386)\times {10}^{-1}\times \frac{10}{3}=\ln \left\{\frac{1}{[A{]}_t}\right\}$
$\Rightarrow [A{]}_t=0.5 \mathrm{M}$

So, option A has correct statement.

(b) $\frac{\left[D\right]}{\left[C\right]}=\frac{k_2}{k_1}=\frac{2}{1}$

So, option B has correct statement.

(c)

 $\begin{array}{l}\frac{\left[B\right]}{\left[D\right]}=\frac{1}{2}\\ \frac{\left[B\right]}{2\left[D\right]}=\frac{1}{4}\\ \frac{\left[B\right]}{\left[D\right]+\left[E\right]}=\frac{1}{4}\end{array}$

Here, the ratio is 1:4. So, option C has correct statement.

(d)

$\frac{\left[B\right]+\left[C\right]}{\left[D\right]+\left[E\right]}=\frac{1}{2}$

So, option D has correct statement.