A neutral organic compound is warmed with some ethanoic acid and a little of conc. H₂SO₄. Vapours having sweet smell (fruity smell) are evolved. What type of functional group is present in this organic compound?

Academic Chemistry NCERT Class 10

The functional group present in this organic compound is the alcohol (hydroxyl) group (-OH). Acids react with alcohols to form sweet-smelling esters.

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Updated on: 10-Oct-2022

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Name the functional group present in an organic compound which gives brisk effervescence with NaHCO3.
A neutral organic compound X of molecular formula C2H6O on oxidation with acidified potassium dichromate gives an acidic compound Y. Compound X reacts with Y on warming in the presence of conc. H2SO4 to give a sweet smelling substance Z. What are X, Y, and Z?
(a) Which functional group do you think can be present in an organic compound having the molecular formula C5H10O2? Write the formula of the organic compound.(b) Give one example each of the compounds having the following functional groups: (i) Aldehyde group (ii) Alcohol group (iii) Carboxylic acid group (iv) Halo group (c) Give one example each of the compounds having the following functional groups: (i) Alkene group (ii) Alkyne group
Which synthetic fibre contains the organic group similar-to those which give fruits their sweet smell.
An organic acid X is a liquid, which often freezes during winter time in cold countries, having the molecular formula C2H4O2. On warming it with methanol in the presence of a few drops of concentrated sulphuric acid, a compound Y with a sweet smell is formed.(a) Identify X and Y. Also write their formulae showing the functional group present in them. (b) Write a chemical equation for the reaction involved.
Name the functional group present in CH3COCH3 and state the name of this compound.
One of the following is not an organic acid. This is:(a) Ethanoic acid (b) Formic acid (c) Citric acid (d) Carbonic acid
An organic compound A having the molecular formula C3H8O is a liquid at room temperature. The organic liquid A reacts with sodium metal to evolve a gas which burns causing a little explosion. When the organic liquid A heated with concentrated sulphuric acid at 170°C, it forms a compound B which decolourizes bromine water. The compound B adds on one molecule of hydrogen in the presence of Ni as catalyst to forms compound C which gives substitution reactions with chlorine.(a) What is compound A? (b) What is compound B? (c) What type of reaction occurs when A is converted into B? (d) What is compound C? (e) What type of reaction takes place when B is converted into C?
(a) Name the gas evolved when ethanol reacts with sodium.(b) What type of compound is formed when a carboxylic acid reacts with an alcohol in the presence of conc. H2SO4? (c) What will you observe when dilute ethanoic acid and dilute hydrochloric acid are put on universal indicator paper, one by one? What does it show?
(a) Draw the structures for the following compounds:(a) Propanone (b) Butanone (b) Write the IUPAC names of the following: (i) HCHO (ii) CH3CHO (iii) CH3CH2CHO (iv) CH3CH2CH2CHO (c) Which functional group is likely to be present in an organic compound having the molecular formula C4H10O? Write the formula of the organic compound.
Butanone is a four-carbon compound with functional group carboxylic acidaldehydeketonealcohol
An organic compound A (molecular formula C2H4O2) reacts with Na metal to form a compound B and evolves a gas which burns with a pop sound. Compound A on treatment with an alcohol C in the presence of a little of concentrated sulphuric acid forms a sweet-smelling compound D (molecular formula C3H6O2). Compound D on treatment with NaOH solution gives back B and C. Identify A, B, C and D.
A four carbons atoms containing neutral organic compound X reacts with sodium metal to evolve a gas which burns with 'pop' sound. Another four carbon atoms containing carbon compound reacts with sodium hydrogen carbonate to evolve a gas which turns lime water milky. When compounds X and Y are heated together in the presence of a little of concentrated sulphuric acid, then a new compound Z is formed.(a) What is compound X ? Also write its formula. (b) What is compound Y ? Also write its formula. (c) What is compound Z ? Also write its formula. (d) What type of smell is given by compound Z? (e) What is the general name of compounds like Z? (f) What is the general name of the reaction which takes place between X and Y to form Z?
Name the functional group present in each of the following organic compounds:i. CH3COCH3ii. C2H5COOH
Consider the following organic compounds:CH3OH, C2H5OH, CH3COCH3, CH3COOH, C2H5COOH, C4H9COOC2H5, CH4, C2H6, CH3CHO, HCHO Out of these compounds: (a) Which compound is most likely to be sweet-smelling? (b) Which compound on treatment with conc. H2SO4 at 170°C forms an alkene? (c) Which compound on repeated chlorination forms chloroform? (d) Which compound is added to alcohol to denature it? (e) Which compound is a constituent of vinegar? (f) Which compound is used to sterilise wounds and syringes?

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