Recent questions and answers in Aldehydes, Ketones and Carboxylic Acids

Give the Preparation of Potassium dichromate (K2Cr2O7)

answered Jul 19, 2017 by pady_1

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Why Carboxylic acids have higher boiling point than aldehyde ketone and alcohols?

answered Jul 19, 2017 by pady_1

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Explain the method of preparation of carboxilic acid from (1) Alcohols (2) Aldehyde

answered Jul 19, 2017 by pady_1

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List the methods to Test to distinguish aldehydes and ketone

asked Jul 19, 2017 by pady_1

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Explain Haloform Reaction

answered Jul 19, 2017 by pady_1

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Give any two methods of preparation of Ketones

asked Jul 19, 2017 by pady_1

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Define Ketone<o:p></o:p>

answered Jul 19, 2017 by pady_1

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Explain Gatterman –Koch reaction

answered Jul 19, 2017 by pady_1

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Explain any two methods of Preparation of aldehydes.

answered Jul 19, 2017 by pady_1

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Explain any two methods of Preparation of aldehydes.

answered Jul 18, 2017 by pady_1

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Define Aldehydes

answered Jul 18, 2017 by pady_1

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Which of the following can reduce Tollens reagent but no Fehlings soln.?

answered May 3, 2017 by meena.p

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Which of the following is used in medicine as a hypnotic?

answered May 3, 2017 by meena.p

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Which of the following does not have alpha hydrogen?

answered May 3, 2017 by meena.p

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Calcium formate on heating gives

answered May 3, 2017 by meena.p

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Acetaldehyde when treated with ethyl alcohol in the presence of dil HCl gives formaldehyde

answered May 3, 2017 by meena.p

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Give simple chemical tests to distinguish between the following pairs of compounds (i) Propanal and Propanone (ii) Acetophenone and Benzophenone (iii) Phenol and Benzonic acid

answered Dec 29, 2016 by meena.p

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Name the following compounds according to IUPAC system of nomenclature $(i)CH_3CH(CH_3)CH_2CH_2CHO \\ (ii)CH_3CH_2COCH(C_2H_5)CH_2CH_2Cl \\ (iii) CH_3CH = CHCHO \\ (iv) CH_3COCH_2COCH_3 \\ (v) CH_3CH(CH_3)CH_2C(CH_3)_2COCH_3 \\ (vi) (CH_3)_3CCH_2 COOH \\ (vii) OHCC_6H_4CHO-P$

answered Dec 29, 2016 by meena.p

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(i) Halogen acids (HX) readily combine with alkenes to form addition products but fail to react with carbonyl compounds. Explain (ii) Why HCOOH does not give HVZ reaction but $CH_3COOH$ does?

answered Dec 29, 2016 by sharmaaparna1

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Arrange the following compounds in the increasing order of their boilling points : $CH_3CH_2CH_2CHO,CH_3CH_2CH_2CH_2OH,H_5C_2-O-C_2H_5,CH_3CH_2CH_2CH_2CH_3$

answered Dec 29, 2016 by meena.p

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How do you account for the following ? Hydrazones of aldehydes and ketones are not prepared in a highly acidic medium

answered Dec 29, 2016 by meena.p

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How will you test aldehydes and ketones with (i) Tollens' reagent (ii) Fehiling's solution . Give equation

answered Dec 29, 2016 by meena.p

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An ether A $(C_5H_{12}O)$ when heated with excess of hot concentrated $HI$ produced two alkyl halides which on hydrolysis from compounds B and C. Oxidation of B gives an acid D whereas oxidation of C gave a ketone E. Deduce the structures of A, B, C, D and E.

answered Dec 29, 2016 by meena.p

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Explain the reason behind a colour of some gem stone with the help of example.

answered Dec 28, 2016 by meena.p

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Draw the structure of : (i) 3- methyl butanal (ii) 4- chloropentan-2-one (iii) 3-oxopentanal

answered Nov 28, 2016 by meena.p

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Give names of the reagents to bring about the following transformations: (i) Hexan-1-ol to hexanal (ii) Cyclohexanol to cyclohexanone (iii) P-Fluorotoluene to p-Fluorobenzaldehyde (iv) Ethanenitrile to ethanal (v) Allyl alcohol to propenal

answered Nov 25, 2016 by meena.p

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An organic compound $(A)\; \{C_8H_{16}O_2\}$ was hydrolysed with dilute sulphuric acid to give a carboxylic acid $(B)$ and an alcohol $(C)$. Oxidation of $(C)$ with chromic acid produced $(B)$.$(C)$ on dehydration gives but‐1‐ene .Identity $A,B,C$

answered Nov 22, 2016 by meena.p

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(i) Why pH of reaction should be carefully controlled while preparing ammonia derivatives of carbonyl compound? (ii) Why formic acid is stronger acid than acetic acid

answered Nov 22, 2016 by meena.p

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Account for the following : Sodium bisulphites is used for the purification of aldehydes and ketones .

answered Nov 11, 2016 by meena.p

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a)Give chemical tests to distinguish between compounds in each of the following pairs: i) Benzaldehyde and Acetone ii)Phenol and Ethanol b)Give reasons for the following: i)Although –$NH_2$ group is an ortho and para directing group, nitration of aniline gives along with ortho and para as well as meta derivative also, why? ii)Conc.HI is preferable used in the cleavage of ether linkage. Explain. iii)Out of $PCl_5$ and $SOCl_2$ which one is a better reagent for the conversion of alcohol to alkyl chloride and why?

answered Nov 10, 2016 by meena.p

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(a) Bring out the following conversions:. (i) 4-nitrotoluene to 2-bromobenzoic acid. (ii) Ethylcyanide to 1- phenyl propanone. (b) Give a reason for the following : (i) Chloroacetic acid is more acidic than acetic acid. (ii) Carboxylic acids have higher boiling point than alcohols. (iii) 4-nitrobenzoic acid is more acidic than 4-methoxy benzoic acid.

answered Nov 10, 2016 by meena.p

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How would you account for the following : (i) The following order of increase in strength of acids $PH_3 < H_2S < HCl $ (ii) The oxidizing power of oxo-acids of chlorine follows the order . $HClO_4 < HClO_3 < HClO_2 < HClO$

answered Nov 10, 2016 by meena.p

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Write the structure of 4 - methyl pent -3-en -2- one

answered Nov 4, 2016 by meena.p

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a)Draw the structure of A- methylpent -3-en-2-one b) Write the structure of 4 - methyl pent -3-en -2- one

answered Nov 1, 2016 by meena.p

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State the uses of carboxylic acids :

answered Oct 31, 2016 by meena.p

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Write chemical equation for the following conversions : (i) Nitro benzene to benzoic acid. (ii) Benzyl chloride to 2-phenylethanamine. (iii) Aniline to benzyl alcohol .

answered Oct 26, 2016 by meena.p

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(i) Give names of the reagents to bring about the following transformations. (a) Ethanoic acid to ethanol(b) Propan -1-ol to propanal(c) Pent -3 -en-2-ol to Pent -3-en-2-one(d) Sodium benzonte to benzene(ii) Arrange the following in the increasing order (a) Methanal, propanal, butanone, ethanal , propanone (nucleophilic addition reaction ) (b) Formaldehyde , acetone , acetaldehyde (reactivity towards HCN)(c) Acetophenone , P- toludehyde, p-nitrobenzaldehyde, benzaldehyde (nucleophilic addition reaction )

answered Oct 18, 2016 by meena.p

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Predict the product of the following reaction :

answered Oct 17, 2016 by meena.p

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$CH_3COCH_3$ can be converted to $CH_3CH_2CH_3$ by the action of

answered Feb 18, 2016 by kaushikmishra77

2 answers