Addition of water to alkynes occurs in acidic medium and in the presence of Hg2+ ions as a catalyst. Which of the following products will be formed on addition of water to but-1-yne under these conditions.
Which of the following compounds is most reactive towards nucleophilic addition reactions?
The correct order of increasing acidic strength is _____________.
Compound can be prepared by the reaction of _____________.
The reagent which does not react with both, acetone and benzaldehyde.
Cannizaro’s reaction is not given by _____________.
Which product is formed when the compound is treated with concentrated aqueous KOH solution?
Structure of ‘A’ and type of isomerism in the above reaction are respectively.
Compounds A and C in the following reaction are __________.
Which is the most suitable reagent for the following conversion?
Which of the following compounds will give butanone on oxidation with alkaline KMnO4 solution?
In Clemmensen Reduction carbonyl compound is treated with _____________.
Which of the following compounds do not undergo aldol condensation?
Treatment of compound with NaOH solution yields
Which of the following conversions can be carried out by Clemmensen Reduction?
Through which of the following reactions number of carbon atoms can be increased in the chain?
Benzophenone can be obtained by ____________.
Which of the following is the correct representation for intermediate of nucleophilic addition reaction to the given carbonyl compound (A) :
(A)
Why is there a large difference in the boiling points of butanal and butan-1-ol?
Write a test to differentiate between pentan-2-one and pentan-3-one.
Give the IUPAC names of the following compounds
(i)
(ii)
(iii)
(iv) CH3-CH=CH-CHO
Give the structure of the following compounds.
(i) 4-Nitropropiophenone
(ii) 2-Hydroxycyclopentanecarbaldehyde
(iii) Phenyl acetaldehyde
Write IUPAC names of the following structures.
Benzaldehyde can be obtained from benzal chloride. Write reactions for obtaining benzalchloride and then benzaldehyde from it.
Name the electrophile produced in the reaction of benzene with benzoyl chloride in the presence of anhydrous AlCl3. Name the reaction also.
Oxidation of ketones involves carbon-carbon bond cleavage. Name the products formed on oxidation of 2, 5-dimethylhexan-3-one.
Arrange the following in decreasing order of their acidic strength and give reason for your answer.
CH3CH2OH, CH3COOH, ClCH2COOH, FCH2COOH, C6H5CH2COOH
What product will be formed on reaction of propanal with 2-methylpropanal in the presence of NaOH? What products will be formed? Write the name of the reaction also.
Compound ‘A’ was prepared by oxidation of compound ‘B’ with alkaline KMnO4. Compound ‘A’ on reduction with lithium aluminium hydride gets converted back to compound ‘B’. When compound ‘A’ is heated with compound B in the presence of H2SO4 it produces fruity smell of compound C to which family the compounds ‘A’, ‘B’ and ‘C’ belong to?
Arrange the following in decreasing order of their acidic strength. Give explanation for the arrangement.
C6H5COOH, FCH2COOH, NO2CH2COOH
Alkenes and carbonyl compounds , both contain a p bond but alkenes show electrophilic addition reactions whereas carbonyl compounds show nucleophilic addition reactions. Explain.
Carboxylic acids contain carbonyl group but do not show the nucleophilic addition reaction like aldehydes or ketones. Why?
Identify the compounds A, B and C in the following reaction.
Why are carboxylic acids more acidic than alcohols or phenols although all of them have hydrogen atom attached to an oxygen atom (—O—H)?
Complete the following reaction sequence.
Ethylbenzene is generally prepared by acetylation of benzene followed by reduction and not by direct alkylation. Think of a possible reason.
Can Gatterman-Koch reaction be considered similar to Friedel Craft’s acylation? Discuss.
Match the common names given in Column I with the IUPAC names given in Column II.
Match the acids given in Column I with their correct IUPAC names given in Column II.
Match the reactions given in Column I with the suitable reagents given in Column II.
Match the example given in Column I with the name of the reaction in Column II.
Assertion : Formaldehyde is a planar molecule.
Reason : It contains sp2 hybridised carbon atom.
Assertion : Compounds containing —CHO group are easily oxidised to corresponding carboxylic acids.
Reason : Carboxylic acids can be reduced to alcohols by treatment with LiAlH4.
Assertion : The α-hydrogen atom in carbonyl compounds is less acidic.
Reason : The anion formed after the loss of α -hydrogen atom is resonance stabilised.
Assertion : Aromatic aldehydes and formaldehyde undergo Cannizaro reaction.
Reason : Aromatic aldehydes are almost as reactive as formaldehyde.
Assertion : Aldehydes and ketones, both react with Tollen’s reagent to form silver mirror.
Reason : Both, aldehydes and ketones contain a carbonyl group.
An alkene ‘A’ (Mol. formula C5H10) on ozonolysis gives a mixture of two compounds ‘B’ and ‘C’. Compound ‘B’ gives positive Fehling’s test and also forms iodoform on treatment with I2 and NaOH. Compound ‘C’ does not give Fehling’s test but forms iodoform. Identify the compounds A, B and C. Write the reaction for ozonolysis and formation of iodoform from B and C.
An aromatic compound ‘A’ (Molecular formula C8H8O) gives positive 2, 4-DNP test. It gives a yellow precipitate of compound ‘B’ on treatment with iodine and sodium hydroxide solution. Compound ‘A’ does not give Tollen’s or Fehling’s test. On drastic oxidation with potassium permanganate it forms a carboxylic acid ‘C’ (Molecular formula C7H6O2), which is also formed along with the yellow compound in the above reaction. Identify A, B and C and write all the reactions involved.
Write down functional isomers of a carbonyl compound with molecular formula C3H6O. Which isomer will react faster with HCN and why? Explain the mechanism of the reaction also. Will the reaction lead to the completion with the conversion of whole reactant into product at reaction conditions? If a strong acid is added to the reaction mixture what will be the effect on concentration of the product and why?
When liquid ‘A’ is treated with a freshly prepared ammoniacal silver nitrate solution, it gives bright silver mirror. The liquid forms a white crystalline solid on treatment with sodium hydrogensulphite. Liquid ‘B’ also forms a white crystalline solid with sodium hydrogensulphite but it does not give test with ammoniacal silver nitrate. Which of the two liquids is aldehyde? Write the chemical equations of these reactions also.
is treated with concentrated aqueous KOH solution?
compound with NaOH solution yields
