Advertisements
Advertisements
प्रश्न
Give the uses of freon 12.
Advertisements
उत्तर
Freon 12 is used in aerosol propellants, refrigeration and air-conditioning.
APPEARS IN
संबंधित प्रश्न
Draw structure of DDT.
How the following conversion can be carried out?
Aniline to phenylisocyanide
Write the environmental effects of DDT.
Among the following, insecticide is:
Chloropicrin is formed by the reaction of ____________.
\[\ce{CH3CH2CH2Br + NaCN -> CH3CH2CH2CN + NaBr}\], will be fastest in:
A dihalogen derivative ‘X’ of a hydrocarbon with three carbon atoms react with ale. KOH and produces hydrocarbon which forms red ppt. with ammonical Cu2Cl2. ‘X’ gives an aldehyde on reaction with aq. KOH. The compound ‘X’ is:
Major product obtained on reaction of 3-Phenyl propene with HBr in presence of organic peroxide.
Chloromethane on treatment with excess of ammonia yields mainly ______.
What are the IUPAC names of the insecticide DDT and benzene hexachloride? Why is their use banned in India and other countries?
How can you obtain iodoethane from ethanol when no other iodine-containing reagent except NaI is available in the laboratory?
Assertion: It is difficult to replace chlorine by –OH in chlorobenzene in comparison to that in chloroethane.
Reason: Chlorine-carbon \[\ce{(C - Cl)}\] bond in chlorobenzene has a partial double bond character due to resonance.
Sodium ethoxide react with ethyl iodide to yield.
Write the equation for the following:
Oxidation of chloroform by air and light.
Give the uses of DDT.
Strong reducing agent converts CHCl3 into:
Assertion (A): Exposure of ultraviolet rays to human causes the skin cancer, disorder and disrupt the immune system. Sol. Reason (R): Carbon tetrachloride is released into air it rises to atmosphere and deplets the ozone layer. In the light of above statements, choose the most appropriate answer from the options given below.
Assertion (A): CHCI3 is stored in dark bottles. Reason (R): CHCl3 is oxidised in dark.
In the light of above statements, choose the most appropriate answer from the options given below
