Organic Chemistry MCQs on FES and AAS , Principle and theory of FES/AAS , Nebulizers . Burner systems , Interferences , Hallow Cathode Lamp , Flame-less techniques , Hydride generation and Cold vapor techniques , Applications of AAS and FES , Mass spectrometer and its principle ,Mass spectrum for Undergraduate Programs.
Organic Chemistry MCQs
Pka values of Acetaldehyde,Acetonitrile,Methane,Propyne and Acetamide are 17,25,48 and 25 respectively. Which canproduce strongest base.
A. Acetonitrile
B. Propyne
C. Methane
D. Acetaldehyde
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Pka values of Acetaldehyde,Acetonitrile,Methane,Propyne and Acetamide are 17,25,48 and 25 respectively. Identify weakest acid.
A. Acetonitrile
B. Propyne
C. Methane
D. Acetaldehyde
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Pka values of Acetaldehyde,Acetonitrile,Methane,Propyne and Acetamide are 17,25,48,25 and 17 respectively. Which canproduceWeakest base.
A. Methane
B. Acetamide
C. Propyne
D. Acetaldehyde
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Which compound can not be prepared by malonic ester synthesis.
A. 2-Methylpentanoic acid
B. 3-Methylpentanoic acid
C. Succinic acid
D. 2-Pentanone
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Pka values of Acetaldehyde,Acetonitrile,Methane,Propyne and Acetamide are 17,25,48 and 25 respectively. Identify strongest acid.
A. Methane
B. Acetamide
C. Propyne
D. Acetaldehyde
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Which compound can be prepared from Malonic ester by usingsteps, formation of carbanion,alkylation,hydrolysis,decarboxylation.
A. 2-Pentanone
B. 2-Methylpentanoic acid
C. Pentanedioic acid
D. 3-Methylpentanoic acid
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Which compound cannot be prepared from acetoaceticester.
A. Pentanoic acid
B. Succinic acid
C. Methylsuccinic acid
D. 2-Pentanone
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Which is most reactive
A. Organo lithium
B. Grignard reagent
C. Organocupparate
D. Organo sodium
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Which is least reactive
A. Organo lithium
B. Grignard reagent
C. Organocupparate
D. Organo sodium
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In organometalic compound carbon atom has
A. Positive charge
B. Neutral
C. Negative charge
D. may be positive or may be negative
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When Methyl lithium react with water,it acts as
A. Acid
B. Base
C. Neucleophile
D. Electrophile
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When organometalic compound react with aldehyde and ketones, they act as:
A. Acid
B. Base
C. Neucleophile
D. Electrophile
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Addition of Methyl meganasium bromide to formaldehyde, what is produced?
A. Ethanol
B. Propanol
C. 2-propanol
D. 2-methyl-2-propanol
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Addition of organometalic compound to all other aldehyde except formaldehyde results in the formation of
A. Primry alcohol
B. Secondary alcohol
C. Tertiory alcohol
D. Ketone
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Addition of organometalic compound to ketones results in the formation of
A. Primry alcohol
B. Secondary alcohol
C. Tertiory alcohol
D. Ketone
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Organo lithium and grignard reagent can form
A. 1,2- addition product
B. 1,4- addition product
C. 1,3- addition product
D. 1,5- addition product
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Organocuparate reagent can form
A. 1,2- addition product
B. 1,4- addition product
C. 1,3- addition product
D. 1,5- addition product
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Which of the following is the most reactive organometallic reagent
A. Organolithium
B. Organomagnesiumbromide
C. Sodium Acetylide
D. Organocuprates
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Which compound cannot be synthsized by using acetoacetic ester?
A. 5-Methyl-2-hexanone
B. 2,5-Hexanedione
C. 2,6-heptanedione
D. Succinic Acid
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Which of the following cannot be synthesized by using Malonic ester synthesis?
A. 1,2-Cyclobutanedicarboxylic acid
B. Succinic acid
C. Phenylacetone
D. 2-Ethylpentanoic acid
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Which of the following compound cannot be the product of Malonic ester synthesis?
A. Monocarboxylic acid
B. Dicarboxylic acid
C. Cycloalkane carboxylic acid
D. Diketone
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Which of the following compound can be synthsized by Malonic ester?
A. 2-Pentanoic acid
B. 2-Pentanone
C. 2,6-Heptanedione
D. 5-Hexen-2-one
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Which of the following compund cannot be synthsized by Acetoacetic ester?
A. 2-Pentanoic acid
B. 2-Pentanone
C. 2,6-Heptanedione
D. 5-Hexen-2-one
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Which one is useful reagent for synthesis of ketones?
A. Malonic ester
B. Acetoacetic ester
C. Acetic ester
D. Carboxylic acid
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Which of the following compound is formed by malonic ester synthesis?
A:Pentanedioicacid
B:2-Pentanone
C:5-Hexen-2one
D:3-methyl-2-hexanone
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All compounds are formed by malonic ester synthesis except?
A:Ketones
B:Acyclicdicarboxylic acid
C:Acyclicmonocarboxlic acid
D:Cyclicmonocarboxlic acid
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Which of the following compound can not be formed by acetoacetic ester synthesis?
A:4-Pentanoicacid
B:2-Pentanone
C:5-Hexen-2one
D:4-methyl-2-hexanone
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Which of the following compound can be formed by acetoacetic ester synthesis?
A:4-Pentanoicacid
B:2-Pentanone
C:Succinic acid
D:2-methylpentanoicacid
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All compounds are formed by acetoacetic ester synthesis except one, indicate that one?
A:Acetones
B:1,4-Diketones
C:4-phenyl-2-butanone
D:alpha,alpha’-dimethylsuccinic acid
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Silyl ether is protecting group of
A:Alchol
B:Carboxylic acid
C:Amine
D:Ether
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Organomettalics are strong nucleophlie that react with electrophilc carbon atoms to form
A:Carbon-Carbon bonds
B:Carbon-lithium bonds
C:Carbon-Silicon bonds
D:Carbon-Magnesium bond
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Which of the following compound is formed by malonic ester synthesis
A. Cyclobutyl methyl ketone
B. Pentanoic acid
C. 5-hexen-2-one
D. 2-pentanone
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All compounds are formed by acetoacetic acid synthesis except
A. Cyclobutyl methyl ketone
B. Pentanoic acid
C. 5-hexen-2-one
D. 2-pentanone
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Which of the following compound is formed by malonic ester synthesis
A. 4-pentenoicacid
B. 3-propyl-2-hexanone
C. 5-hexen-2-one
D. 2-pentanone
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All compounds are formed by acetoacetic acid synthesis except
A. 4-pentenoicacid
B. 3-propyl-2-hexanone
C. 5-hexen-2-one
D. 2-pentanone
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Which of the following compound is formed by acetoacetic acid synthesis
A. Succinic acid
B. Cyclobutanecarboxylic acid
C. 2,6-heptanedione
D. Pentanoic acid
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All compounds are synthesized by malonic ester synthesis except
A. Succinic acid
B. Cyclobutanecarboxylic acid
C. 2,6-heptanedione
D. Pentanoic acid
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Which of the following compound can be prepared from acetoacetic ester synthesis?
A. 1-pentanol
B. 2-methylburanoic acid
C. Cyclobutane carboxylic acid
D. 3-propyl-2-hexanone
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Which one of the following is not involved in Darzans reaction?
A. Aplha-haloester
B. Carbonyl compound
C. NaOEt
D. Alcohol
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In which of the following reaction an epoxide is formed?
A. Cannizzaro reaction
B. DielAldr reaction
C. Mannich reaction
D. Darzan reaction
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Which one of the following product is formed in Perkins reaction?
A. ?-haloester
B. Carbonyl compound
C. Cinnamic acid
D. Alcohol
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In which of the following reaction a hydride shift takes place?
A. Cannizzaro reaction
B. DielAldr reaction
C. Mannich reaction
D. Darzan reaction
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Which one of the following cannot be a product of cannizaro reaction?
A. Benzyl alcohol
B. Sodium benzoate
C. Sodium formate
D. 2-butene
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Weak acid, weak base, high temperature, sodium or potassium salt of the acid. These conditions are of which of the following reaction?
A. Perkins reaction
B. DielAldr reaction
C. Mannich reaction
D. Darzan reaction
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Which one of the following product is formed in Wittig reaction?
A. Alpha-haloester
B. Carbonyl compound
C. Cinnamic acid
D. Alkene
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Which of the following is not involved in Wittig reaction?
A. Nucleophilic substitution
B. Phosphorus ylides
C. Phosphonate ester
D. Amines
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In which of the following reaction 1,4 addition takes place?
A. Cannizzaro reaction
B. DielAldr reaction
C. Mannich reaction
D. Darzan reaction
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Which of the following can be a product of DielAldr reaction?
A. Cyclohexene
B. Amines
C. Sulfonates
D. Alkyne
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Which of the following represents a reaction in which condensation of an enolizable compound, formaldehyde and ammonia takes place?
A. Cannizzaro reaction
B. DielAldr reaction
C. Mannich reaction
D. Darzan reaction
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Which of the following amine can be used for Mannich reaction?
A. Cannizzaro reaction
B. DielAldr reaction
C. Mannich reaction
D. Darzan reaction
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