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Give the name of the following compound:
The correct answer is option D(None of the above)
The given compound is 4-Bromo-3methylheptanal
Arrange the following alcohols, hydrocarbon and ether in order of their increasing boiling points Pentan – 1 – ol, n – butane, pentanal, ethoxyethane.
Alcohols have higher boiling points than aldehydes.
The compound formed as a result of oxidation of ethyl benzene by KMnO4 is
Give IUPAC names of the following compound:
This is 1-phenyl propan-1-one.
The reagents to bring about the change from but – 2 – ene to ethanal
Reductive Ozonolysis of alkene forms aldehyde or ketone.
Which of the following is correct?
C2H5OH get oxidizes to CH3CHO and –COCH3 group is important for iodoform.
A strong base can abstract an α – hydrogen from
Because conjugate base that form will be stable in case of Ketone.
Which of the following reagents can be used to convert a carboxylic acid directly into its corresponding acid chloride derivative?
The appropriate reagent for the transformation:
In this reaction, a CO group is converted to CH2 group.
This can be achieved by Wolff-Kishner reduction which uses reagent NH2NH2, OH− (hydrazine in alkaline medium).
Clemmensen reduction (Zn(Hg)/HCl) cannot be used as in presence of HCl, the alcohol may undergo dehydration.
What compound is produced when cyclohexene is treated with concentrated KMnO4?
Conc KMnO4 will cause oxidation and ring opening forming adipic acid.
Arrange the following compounds in decreasing order of their acid strength: i) trichloroacetic acid ii) trifluoroacetic acid iii) acetic acid and iv) formic acid
Acidic strength of carboxylic acid -
– More acidic than phenols or alcohols.
– Acidity increase with the presence of a group with -I effect in the alkyl group.Whereas it decreases with the presence of +I group.
– Acidity increases with increase in the number of halogen atoms on - position.
– It decreases with increasing distance of halogen from
– It increases with increase in the electronegativity of halogen.
- CF3COOH > CCl3COOH > HCOOH > CH3 COOH
The combination of a carbonyl group and a hydroxyl group on the same carbon atom is called a __________ group.
-COOH is carboxyl group.
CH3CHO and C6H5CH2CHO can be distinguished chemically by:
CH3CHO will give iodoform test and C6H5CH2CHO will not give iodoform test.
The common name for pentanedioic acid is:
Pentanedioic acid is glutaric acid.
Which of the following acids does not exhibit optical isomerism?
Maleic Acid shows Geometrical Isomerism but does not give optical isomerism.
In the propanoate ion
This is because of Resonance.
Aldehydes are produced on reduction of the following by DIBAL – H
Both Nitriles and esters are reduced to Aldehyde on reaction with DIBAL-H.
Which of the following statements is not correct?
Aldehydes and ketones have polar C=O group. Therefore they undergo nucleophilic addition reactions.
What compound is produced when (CH3)2CHCH2Br is subjected to the following sequence of steps:
1. Mg, Et2O
The oxidation of toluene to benzoic acid can be stopped at the aldehyde stage, to give benzadehyde, The reagent used for the purpose is one of the following.
This is Etard Reaction.
The oxidation of toluene to benzoic acid can be stopped at the aldehyde stage. The reaction is called?
Etard is specific reaction for conversion of toluene to Benzaldehyde.
The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits:
CH3CH=CHCHO is the product which is suitably substituted so will show geometrical isomer.
In Hell – Volhard Zelinsky reaction, halogen reacts with
Alpha Hydrogen containing carboxylic acids undergo HVZ reaction.
The following reaction is
This is Wolff Kishner reduction of Carbonyls to alkanes.
Many naturally occurring aldehydes and ketones are used in the blending of perfumes and flavouring agents. But the preferred ones are
Higher aldehydes are preferred.