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A simple method to remove peroxides from ethers is to treat them with an aqueous solution of
KI is added to old stocks of ethers when I- is oxidized to I2 by ether peroxide, which itself is reduced to ether.
The total number of isomers possible for the molecular formula C4H10O is
The total number of isomers possible for the molecular formula C4H10O is 7 as:
The best method to prepare 3-methylbutan-2-ol from 3-methylbut-1-ene is
This conversion involves Markovnikov's addition of H2O without rearrangement and hence, is possible only via oxymercuration-demercuration reaction.
Which of the following is most soluble in water?
Due to the presence of two –OH groups, hydroquinone undergoes more extensive H-bonding with H2O.
Which of the following compounds decolourises aqueous bromine and gives white fumes of HCl on reaction with PCl5?
Since the compound decolourises Br2, it must contain a double bond. Further, since it gives dense white fumes of HCl with PCl5, it must contain an –OH group.
An organic compound with molecular formula C7H8O dissolves in NaOH and gives a characteristic colour with FeCl3. On treatment with bromine, it gives a tribromo derivative, C7H5OBr3. The compound is
Only 3-methylphenol has two ortho and one para positions free w.r.t. OH group and hence, gives tribromo derivative.
The order of reactivity of the following alcohols towards conc. HCl is
An alcohol on oxidation is found to give CH3COOH and CH3CH2COOH. The structure of the alcohol is
The most favourable conditions for alcohol fermentation of sugar are
Low concentration (< 10%) of sugar solution, low temperature (288-305 K) and absence of air
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