Advertisements
Advertisements
प्रश्न
Discuss the environmental effects of freons.
Advertisements
उत्तर
- Freon gas is a very powerful greenhouse gas which means that it traps the heat normally radiated from the earth out into space. This causes the earth’s temperature to increase, resulting in rising sea levels, droughts. stronger storms, flash floods and a host of other very unpleasant effects.
- As freon moves throughout the air, its chemical ingredients causes depletion of ozone layer. Depletion of ozone increases the amount of ultraviolet radiations that reaches the surface of the earth, resulting in serious risk to human health. High levels of ozone, in turn, causes resoiratory problems and can also kill plants.
APPEARS IN
संबंधित प्रश्न
Consider the reaction,
\[\ce{CH3CH2CH2Br + NaCN → CH3CH2CH2CN + NaBr}\]
This reaction will be the fastest in
Classify the following compound in the form of alkyl, allylic, vinyl, benzylic halides.
\[\ce{CH3 – CH = CH – Cl}\]
Classify the following compound in the form of alkyl, allylic, vinyl, benzylic halides.
\[\begin{array}{cc}\ce{CH3 - CH - CH3}\\
|\phantom{..}\\\ce{Br}\end{array}\]
How does chlorobenzene react with sodium in the presence of ether? What is the name of the reaction?
Write a chemical reaction useful to prepare the following:
Freon – 12 from Carbon tetrachloride
Explain the mechanism of SN1 reaction by highlighting the stereochemistry behind it.
Explain the preparation of the following compound.
DDT
Explain the preparation of the following compound.
Chloroform
A hydrocarbon C3H6(A) reacts with HBr to form compound (B). Compound (B) reacts with aqueous potassium hydroxide to give (C) of molecular formula C3H6O. What are the (A), (B) and (C). Explain the reactions.
Two isomers (A) and (B) have the same molecular formula C2H4Cl2. Compound (A) reacts with aqueous KOH gives compound (C) of molecular formula C2H4O. Compound (B) reacts with aqueous KOH gives compound (D) of molecular formula C2H6O2. Identify (A), (B), (C) and (D).
