Revisal Problems (Past 13 Year) JEE Advanced (Carboxylic Acids & Its Derivatives) - JEE MCQ
30 Questions MCQ Test - Revisal Problems (Past 13 Year) JEE Advanced (Carboxylic Acids & Its Derivatives)
Only One Option Correct Type
Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.
Q.
Reduction of 4-oxobutyric acid, also called succinic semialdehyde, by sodium borohydride followed by aqueous acid gives a C4H6O2 product. This product is which of the following compounds?
Which of the following would not be a useful method for converting a carboxylic acid into an ester derivative?
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On heating in the presence of bromine, 2, 2-dimethyl-3-oxobutyric acid produces 3-bromo-3-methyl-2-butanone. What unstable intermediate is involved in this reaction?
Fischer esterification of mesitoic acid (2, 4, 6-trimethylbenzoic acid) is extremely slow compared with benzoic acid itself. What is the major factor accounting for this difference in reactivity?
The two ortho methyl group makes —COOH highly sterically hinderded for attack of ROH. The major product in the following reaction is :
What donor and acceptor reactants should be used to prepare the following compound by Claisen condensation?
Device a series of reactions to convert ethyl 3-oxobutyrate to ethyl 4-oxopentanoate. Select the reagents and conditions from the following table, listing them in the order of use,
I. sodium ethoxide in ethanol
II. ethanol + acid catalyst and heat
III. H3O+ and heat
IV. CO2 then H3O+
V. Mg in ether
VI. PBr3
VII. NaBH4 in alcohol
VIII. CH2I2 in ether Zn(Cu)
IX. BrCH2CO2C2H5
X. (CH3CO)2O + pyridin
Dibutyl amine (C4H9)2NH and anisole (C6H5OCH3), have similar boiling points, and are relatively insoluble in water. How might a mixture of these compounds be separated into pure components?
Amines are well known to be stronger bases and nucleophiles than alkenes. Why do enamines, such as 1-dimethylamino cyclopentene, preferentially reacts with electrophiles at a double bond carbon rather than at nitrogen
Which of the following substitution would increase rate of base catalysed hydrolysis of the compound shown below?
One or More than One Options Correct Type
Direction (Q. Nos. 11-16) This section contains 6 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.
Q.
A carboxylic acid X is treated with bromine (1 mole) in the presence of a little phosphorus. The isolated product is heated with a strong base and then oxidised with O3/Zn - H2O. One of the two oxidation products is a neutral compound which reacts with hydroxylamine to give an oxime; X can be
Which one of the following statements is/are true?
Which of the following reaction will produce isopropyl acetate in the best yield?
When acetic acid is dissolved in H2O18, which of the following species is(are) expected to exist in solution?
The expected products(s) in the following reaction is (are)
The expected product(s) in the following Hofmann’s bromamide reaction is/are
Statement Type
Direction (Q. Nos. 17 and 18) This section is based on Statement I and Statement II. Select the correct answer from the codes given below.
Q.
Statement I : Consider the following two amides undergoing Hofmann’s bromamide reaction,
Reaction (I) occur more easily than (II).
Statement II : The rate determining step in Hofmann’s bromamide reaction is unimolecular elimination of bromide (Br-) forming isocyanate
Statement I : When one mole of the following compound is treated with one mole of ammonia, the indicated product is formed as the major product.
Statement II : Ester amide is more stable than anhydride amide.
Comprehension Type
Direction (Q. Nos. 19-24) This section contains 2 paragraphs, each describing theory, experiments, data, etc. Six questions related to the paragraphs have been given. Each question has only one correct answer among the four given options (a), (b), (c) and (d).
Passage I
An organic compound A(C9H6O3) does not react with aqueous solution of NaHCO3 as well as does not change the colour of litmus paper. A on acid hydrolysis gives B(C9H8O4) as major product whereas, Aon treatment with one equivalent of methanol in acidic medium gives C(C10H10O4) as the major product (other minor isomer of C is also formed). B on heating with soda lime gives toluene.
Q.
The structure of A satisfying the above conditions is
Passage I
An organic compound A(C9H6O3) does not react with aqueous solution of NaHCO3 as well as does not change the colour of litmus paper. A on acid hydrolysis gives B(C9H8O4) as major product whereas, Aon treatment with one equivalent of methanol in acidic medium gives C(C10H10O4) as the major product (other minor isomer of C is also formed). B on heating with soda lime gives toluene.
Q.
The most likely structure of B is
Passage I
An organic compound A(C9H6O3) does not react with aqueous solution of NaHCO3 as well as does not change the colour of litmus paper. A on acid hydrolysis gives B(C9H8O4) as major product whereas, Aon treatment with one equivalent of methanol in acidic medium gives C(C10H10O4) as the major product (other minor isomer of C is also formed). B on heating with soda lime gives toluene.
Q.
The structure of product C is
Passage II
Consider the following reaction scheme.
Chiral gives of CO2 with NaHCO3
Q.
The most likely structure of A is
Passage II
Consider the following reaction scheme.
Chiral gives of CO2 with NaHCO3
Q.
Which of the following regarding B is not true?
Passage II
Consider the following reaction scheme.
Chiral gives of CO2 with NaHCO3
Q.
The structure of C and D respectively are
Matching List Type
Direction (Q. Nos. 25 and 26) Choices for the correct combination of elements from Column I and Column It are given as options (a), (b), (c) and (d), out of which one is correct.
Q.
Match the reactions from Column I with their major products from Column II and mark the correct option from the codes given below.
carbocation.
Match the reactions from Column I with their major products from the Column II and mark the correct option from the codes given below.
One Integer Value Correct Type
Direction (Q. Nos. 27-30) This section contains 4 questions. When worked out will result in an integer from 0 to 9 (both inclusive).
Q.
An organic acid X has m olecular form ula C8H16O2. X on heating with NH3 forms Y. Y on treatment with alkaline Br2 solution forms Z. Z on treatment with nitrous acid followed by heating with concentrated H2SO4 solution gives 2, 4-dimethyl-2-pentene. How many different acids X can satisfy the above mentioned condition?
How many different isomers exist for C4H11N ?
If a mixture containing ethyl acetate and ethyl propanoate is refluxed with C2H5ONa / C2H5OH, ester condensation takes place. How many different condensation would be formed?
How many of the following gives visible change when treated with nitrous acid (NaNO2 + HCI)?
i. CH3CH2CH2NH2
ii. CH2CH2NHCH3
v. CH3CH2CONH2
vi. CH3CH2CH(CH3)NO2
vii. CH3CH2N(CH3)2
ix. CH3COOC2H5
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