Chemistry questions
29404 published questions with worked solutions.
- Racemisation takes place in S_N1 reaction. The reason is _____
- d- and l-forms of an optically active compound differ in _____
- In S_N2 mechanism, the rate of reaction is proportional to concentration of _____
- An optically active halide when allowed to react with CN^- gives a racemic mixture. The halide is most likely to be _____
- Which of the following letter is chiral?
- When four or more halogen atoms are attached to an aromatic ring; the compound is classified as _____
- Aromatic compounds have _____
- The C-Cl bond in chlorobenzene as compared with C-Cl bond in methyl chloride is _____
- In aryl halide, halogen atom is attached _____
- Arenes when treated with chlorine or bromine in the presence of Lewis acid as a catalyst undergo _____ reaction
- The product formed when benzenediazonium chloride is treated with CuBr/HBr is _____
- o-Chlorotoluene and p-Chlorotoluene can be easily separated _____
- Aryl halides are less reactive towards nucleophilic substitution reaction than alkyl halides due to _____
- The effect in which atoms or groups in a compound can push away the electrons, is called _____ effect
- A permanent effect in carbon chain compounds, in which electrons forming a bond between a carbon atom and another atom are...
- Aryl halides undergo _____
- Introduction of alkyl or aryl group in chlorobenzene by reacting it with methyl chloride in the presence of anhydrous aluminium...
- During heterolytic fission, which species retain shared pair of electron?
- Ethyl isocyanide can be prepared when ethyl iodide reacts with _____
- The method of separation of racemic mixture into dextro and laevo isomers is known as _____