Polyhalogen Compounds and their Uses

Chemical formula of Freons :

Write one use of dichloromethane and one harmful effect of it on the body.

Write down some important properties of chloroform.

Write down some important properties of DDT.

Write down some important properties of iodoform.

Write down some important properties of carbon tetrachloride.

Write the balanced equation for the following: Chloroform reacts with chlorine.

Write the balanced equation for the following:
When chloroform is oxidised by air.

How to form DDT?

What is chlorofluorocarbon ?

The molecular formula of Freon 12 is 

Freon $12$ is

Alkaline hydrolysis of chloral hydrate produces a compound $\left(\mathrm{A}\right)$ which is used as a solvent and preservative for anatomical specimens and also has anesthetic properties.$\left(\mathrm{A}\right)$ is prone to aerial oxidation in presence of sunlight to give a poisonous compound $\left(\mathrm{A}\right)$ which may be made non-poisonous by adding dilute solution of ethanol which converts it into a non-poisonous compound $\left(\mathrm{C}\right)$
How many moles of ${\mathrm{CH}}_3\mathrm{MgBr}$ will be added to $\left(\mathrm{C}\right)$ followed by acidic hydrolysis to give alcohol?

Trichloro acetaldehyde $\left({\mathrm{CCl}}_3\mathrm{CHO}\right)$ reacts with chlorobenzene in presence of sulphuric acid to form a compound $\mathrm{P}$, $\mathrm{P}$ is a organic insecticide. Total number of chlorine atom present in compound $\mathrm{P}$ is:

Why the dichloromethane used as solvent?

List out the uses of dichloromethane.

Complete the following reaction: ${\mathrm{CHCl}}_3 + {\mathrm{O}}_2 \stackrel{\mathrm{light}}{\to } \mathrm{\_\_\_\_\_}$.

Explain why chloroform is always kept in closed dark coloured bottles.

Write the common name of carbon tetrachloride with its structure.

Write any two uses of carbon tetrachloride.