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प्रश्न
Ketone : –CO– : : Ester : _______
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उत्तर
Ketone : –CO– : : Ester : –COO–
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संबंधित प्रश्न
What do you observe when you drop a few drops of acetic acid to test tubes containing
(a) phenolphthalein
(b) distilled water
(c) universal indicator
(d) sodium hydrogen carbonate powder
While studying saponification reaction for the preparation of soap, a teacher suggested to a student to add a small quantity of common salt to the reaction mixture. The function of common salt in this reaction is to
(A) reduce the alkalinity of the soap
(B) reduce the acidity of the soap
(C) enhance the cleansing capacity of soap
(D) favour precipitation of soap
List two uses of esters.
Give balanced chemical equations for Sodium ethanoate to methane.
What is the common name of methanol?
Three organic compounds A, B and C have the following molecular formulae: C4H10O
Which compound contains a carboxyl group? Write its name and structural formula.
Which of the following will give brisk effervescence with sodium hydrogen carbonate and why?
CH3COOH, CH3CH2OH
What is an oxidising agent?
Which of the following molecular formula corresponds to ethylbutanoate ester?
(a) C5H10O2
(b) C6H12O2
(c) C7H14O2
(d) C8H16O2
Consider the following organic compound:
CH3OH, C2H5OH, CH3COCH3, CH3COOH, C2H5COOH, C4H9COOC2H5, CH4, C2H6, CH3CHO, HCHO
Out of these compound:
- Which compound is most likely to be sweet-smelling?
- Which compound on treatment with conc. H2SO4 at 170°C forms an alkene?
- Which compound on repeated chlorination forms chloroform?
- Which compound is added to alcohol to denature it?
- Which compound is a constituent of vinegar?
- Which compound is used to sterilise wounds and syringes?
Name the compound formed when acetic acid and ethanol react together.
If you are asked to report your observations about the following two properties of acetic acid, what would you report?
(i) Odour
(ii) Effect on litmus
While studying saponification reactions, the following comments were noted down by the students :
(I) Soap is a salt of fatty acids.
(II) The reaction mixture is basic in nature.
(III) In this reaction heat is absorbed.
(IV) This reaction is not a neutralisation reaction.
Which of these are the correct comments ?
(A) I and III only
(B) I, II and III
(C) II, III and IV
(D) I and II only
Explain the following term with an example.
Oxidant
Write a fully balanced equation for the folowing case:
Acitic acid is warmed with ethanol in the presence of concentrated sulpheric acid.
State how the following conversion can be carried out:
Ethyl chloride to Ethene.
Mineral acids are stronger acids than carboxylic acids because
- mineral acids are completely ionised
- carboxylic acids are completely ionised
- mineral acids are partially ionised
- carboxylic acids are partially ionised
A few drops of ethanoic acid were added to solid sodium carbonate. The observation made was that ______.
In the presence of the acid catalyst, ethanoic acid reacts with ethanol and ______ ester is produced.
Give the balanced chemical equation of the reaction.
Oxidation of ethanol by acidified potassium dichromate.
