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प्रश्न
Draw structure of DDT.
Write the structure of the following:
DDT
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उत्तर
Dichlorodiphenyltrichloroethane (DDT)
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संबंधित प्रश्न
How the following conversion can be carried out?
Aniline to phenylisocyanide
Write the environmental effects of DDT.
How can the following conversions be brought about:
Methyl chloride to acetone.
Give balanced equations for the following reactions:
Acetic anhydride with phosphorus pentachloride.
Write balanced chemical equation for the following reaction:
Methyl magnesium iodide is treated with carbon dioxide and the product hydrolysed in acidic medium.
Write the formula of the following compound:
Triammine triaquachromium (III) chloride
Give a balanced chemical equation to convert methyl cyanide to ethyl alcohol.
In the following sequence of the reactions, what is D?
Phosgene is a common name for ____________.
Chloroform and conc. HNO3 reacts to produce ____________.
B.H.C. is used as an ____________.
Gammexane is ____________.
Fitting reaction can be used to prepare ____________.
\[\ce{CH3CH2CH2Br + NaCN -> CH3CH2CH2CN + NaBr}\], 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:
Chloromethane on treatment with excess of ammonia yields mainly ______.
Why iodoform has appreciable antiseptic property?
Name the alkene which will yield 1-chloro-1-methylcyclohexane by its reaction with \[\ce{HCl}\]. Write the reactions involved.
Match the compounds given in Column I with the effects given in Column II.
| Column I | Column II | |
| (i) | Chloramphenicol | (a) Malaria |
| (ii) | Thyroxine | (b) Anaesthetic |
| (iii) | Chloroquine | (c) Typhoid fever |
| (iv) | Chloroform | (d) Goiter |
| (e) Blood substituent |
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.
Some halogen containing compounds are useful in daily life. Some compounds of this class are responsible for exposure of flora and fauna to more and more of UV light which causes destruction to a great extent. Name the class of these halocompounds. In your opinion, what should be done to minimise harmful effects of these compounds.
Convert the following:
Chloroethane to methanamine.
The most stable conformation of 1, 2-dibromomethane among the following is
 |
| I |
 |
| II |
 |
| III |
 |
| IV |
Which of the following does not give iodoform test?
Which of the following will have a mesoisomer also?
If chloroform is left open in air in the presence of sunlight, it gives
Ethyl chloride is converted into diethyl ether by
Chlorination of CS2 give
Sodium ethoxide react with ethyl iodide to yield.
CH3NH2 react with CH3mg x to give
Chloroform on reduction with Zn an HCI (all) gives:-
In the above reaction if we take methylene chloride and isopropylidene chloride then products are ______.
The compound that will not give iodoform on treatment with alkali and iodine is ______.
Which among the following pairs has only herbicides?
The major product formed when 1, 1, 1-trichloropropane is treated with aqueous potassium hydroxide, is ______.
Write two uses of polyhalogen compounds.
Convert the following iodomethane to methoxy methane.
Write equation to convert Methyl cyanide to ethanoic acid.
Give the uses of DDT.
DDT is obtained by the reaction of chlorobenzene with ______.
Methyl bromide is not used ______.
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.
Which of these compounds is synthesised by chloral?
