Define racemic mixtures.

What is the solution of the product (P) formed after the reaction of $-\mathrm{COOH}$ with $\mathrm{OH}$ group to form ester?

In the following structures 

Find the correct statements.

What is the maximum number of geometrical isomers possible for the following compound?

Which among the following show geometrical isomerism?

Consider the following two possible geometry of a complex around central metal $\mathrm{M}$ and select correct statement(s) about complex.

Which of the following cycloalkanes will show cis-trans isomerism?

(a)   

(b)    

(c)     

(d)