When $20\mathrm{g}$ of an optically active compound in a $200 \mathrm{ml}$ solution is placed in a $10 \mathrm{dm}$ tube, it rotates the plane polarised light $\left(\mathrm{PPL}\right)$ by $30°$. Calculate the angle of rotation and specific angle of rotation if the above solution is diluted to$1 \mathrm{litre}$. 

Chiral centres present in the given structures will be:

(i) 

(ii) 

Which of the following molecules is chiral?

The chiral molecules are:

$\left(1\right)$ 

$\left(2\right)$ 

$\left(3\right)$ 

Which of the following is chiral?

In which of the following, the spatial representation of group/atoms is different from the given structure $\mathrm{P}$? 

Fischer projection formula of this compound can be represented as:

Observe the following structures and choose the correct option(s) mentioned below: 

(A) 

(B)  

(I) 

(II)