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Major Organic Chemistry - Chemistry MCQ


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60 Questions MCQ Test Mock Test Series for IIT JAM Chemistry - Major Organic Chemistry

Major Organic Chemistry for Chemistry 2024 is part of Mock Test Series for IIT JAM Chemistry preparation. The Major Organic Chemistry questions and answers have been prepared according to the Chemistry exam syllabus.The Major Organic Chemistry MCQs are made for Chemistry 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Major Organic Chemistry below.
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Major Organic Chemistry - Question 1

An organic compound (MF = C8H10O) exhibit the following 1H NMR spectral data:           
δ 2.5 (3H, s), 3.8 (3H, s), 6.8 (2H, d, J = 8 Hz), 7.2 (2H, d, J = 8Hz), The compound is:           

Major Organic Chemistry - Question 2

Which chemical test will distinguish the compounds shown below?     
      

Major Organic Chemistry - Question 3

The reactivity of compound I-IV with maleic anhydride (V) follows the order:
 (I)  (II)   (III)  (IV)  (V)  

Major Organic Chemistry - Question 4

Major product formed in the following reaction is:

Major Organic Chemistry - Question 5

The mechanism of the transformation involves:  

Major Organic Chemistry - Question 6

Major Organic Chemistry - Question 7

The major product of the following reaction is:

Major Organic Chemistry - Question 8

Consider the following:
   
Order of stretching frequency in IR-spectroscopy would be:           

Detailed Solution for Major Organic Chemistry - Question 8

Correct Answer :- a

Explanation : The stretching frequency increases with increase in the number of Pi bond which is present in the carbon bond. In case of triple bond there are two pi bond , in case of double bond there is only a single pi bond.

This is because with increase in the number of bond there is decrease in the atomic distance and hence there is more chance of stretching between the two atoms with respect to each other.

Major Organic Chemistry - Question 9

The major product formed in the following reaction is:

Major Organic Chemistry - Question 10

The major product formed in the reaction given below is:

Major Organic Chemistry - Question 11

Which is reducing sugar?

Detailed Solution for Major Organic Chemistry - Question 11

Ans: c

Explanation: A reducing sugar is any sugar that is capable of acting as a reducing agent because it has a free aldehyde group or a free ketone group. Ketoses must first tautomerize to aldoses before they can act as reducing sugars. The common dietary monosaccharides galactose, glucose and fructose are all reducing sugars.

Major Organic Chemistry - Question 12

The conditions A-B, required for the following pericyclic are:           
  

Major Organic Chemistry - Question 13

In the following three step transformation, identify the correct combination product P, Q and R:
 

Major Organic Chemistry - Question 14

Consider the given chemical reaction and predict B and C:

Major Organic Chemistry - Question 15

Major product formed in the given reaction is:

Major Organic Chemistry - Question 16

Consider the following chemical reaction and choose the correct product:

Major Organic Chemistry - Question 17

Which of the following is diastereomer of the given compound?

Major Organic Chemistry - Question 18

Consider the following reactions for a compound with molecular formula C10H16:

C10H16 is a terpene called Myrcene and follows is isoprene rule. Hence, correct structure of Myrcene among three possible isomers of C10H16 is:

Major Organic Chemistry - Question 19

For the conversion of X to Y, the appropriate sequence of reaction is:

Major Organic Chemistry - Question 20

Consider the following chemical reaction & predict the major product. [Major product has two geometrical isomers which are inter-convertible in presence of light]:

Major Organic Chemistry - Question 21

The correct order of the basicity of following compounds is:
   

Major Organic Chemistry - Question 22

Correct order of rate of hydrolysis for following compounds is:
 
 
 

Major Organic Chemistry - Question 23

Predict the product for the following sugar functionalization reaction:

Major Organic Chemistry - Question 24

Which of the following bases would give the high percentage of alk-1-ene from 2-bromo-2,3-dimethylbutane?
 

Major Organic Chemistry - Question 25

Choose the major product formed in given chemical reaction sequence:

Major Organic Chemistry - Question 26

What are the most likely products of the reaction shown below?

Major Organic Chemistry - Question 27

Product [B] formed in the following reaction would be:

Major Organic Chemistry - Question 28

Major product formed in the following chemical reaction would be?

Major Organic Chemistry - Question 29

Consider the following chemical reaction and predict the product ‘D’:

Major Organic Chemistry - Question 30

Consider the following chemical reaction sequence. Predict the product ‘Z’:
 

*Multiple options can be correct
Major Organic Chemistry - Question 31

Which of the following is true?           

*Multiple options can be correct
Major Organic Chemistry - Question 32

Choose the correct product(s):
 

*Multiple options can be correct
Major Organic Chemistry - Question 33

Which of the following compound do/es not show/s mutarotation?           

*Multiple options can be correct
Major Organic Chemistry - Question 34

Consider the following chemical reaction and choose the correct products involved:

*Multiple options can be correct
Major Organic Chemistry - Question 35

Product formed by P & Q can be differentiated by:

Product formed by P & Q can be differentiated by:           

*Multiple options can be correct
Major Organic Chemistry - Question 36

Optically pure ester (L) is hydrolysed in aq. acetic acid to form a recemical mixture of [M]. Choose correct statement(s):

*Multiple options can be correct
Major Organic Chemistry - Question 37

Which of the following reactions will form carbene:
 

*Multiple options can be correct
Major Organic Chemistry - Question 38

Consider the following chemical reaction and select the correct alternative(s):
 

Detailed Solution for Major Organic Chemistry - Question 38

Option A and C is correct. D is wrong as on the reduction of cinnamic acid. Aldehyde will not be formed, only double bond will get reduced.

*Multiple options can be correct
Major Organic Chemistry - Question 39

Which of the following compounds is achiral:
 

*Multiple options can be correct
Major Organic Chemistry - Question 40

Consider the reaction sequence:

Choose the correct option(s): (‘X’ is hydrolyzed to give ‘Y’)

*Answer can only contain numeric values
Major Organic Chemistry - Question 41

Compound 'X' containing chlorine on treatment with strong ammonia gives a solid 'Y' which is free from chlorine. 'Y' was analyzed and found to contain 44.31% C, 9.59% H and 19.50% N. ‘X’ reacts with Br2 and caustic soda to give a basic compound 'Z'. 'Z' give ethanol on treatment with HNO2. Find the total number of carbon atom(s) present in the empirical formula of 'Y':


*Answer can only contain numeric values
Major Organic Chemistry - Question 42

How many of the following compound(s) give(s) positive Haloform test?
 
 


*Answer can only contain numeric values
Major Organic Chemistry - Question 43

How many mole(s) of RMgX can be consumed in the reaction of following compound?
 


*Answer can only contain numeric values
Major Organic Chemistry - Question 44

Calculate number of peptide(s) formed after treatment of following polypeptide with Chemotrypsin.:
Lys-Phe-Gly-Asp-Trp-Ser-Arg-Trp-Leu-His


*Answer can only contain numeric values
Major Organic Chemistry - Question 45

Find the degree of unsaturation in major product:
 


*Answer can only contain numeric values
Major Organic Chemistry - Question 46

How many five membered ring(s) will be form in the following chemical reaction?


*Answer can only contain numeric values
Major Organic Chemistry - Question 47

The number of resonance structures for product ‘N’ is:  


*Answer can only contain numeric values
Major Organic Chemistry - Question 48

Number of compound(s) that will undergo Hoffman Bromamide reaction?
 



*Answer can only contain numeric values
Major Organic Chemistry - Question 49

When methylglucopyranoside reacts with periodic acid, how many mole(s) of the oxidizing agent will be consumed per mole of the sugar?


*Answer can only contain numeric values
Major Organic Chemistry - Question 50

How many of the following heterocyclic compound(s)is/are aromatic?


Detailed Solution for Major Organic Chemistry - Question 50

Except 3rd one all are aromatic heterocyclic compounds.

*Answer can only contain numeric values
Major Organic Chemistry - Question 51

Number of correct chemical conversion among following is/are:
  
 
 


*Answer can only contain numeric values
Major Organic Chemistry - Question 52

A chemist finds that the addition of (+)-epinepherine to the catalytic reduction of butan-2-on gives a product that is slightly optically active, with a specific rotation of +0.45°. Calculate the percentage of (+)-butan-2-ol formed in this reaction. If the specific rotation of enantiomerically pure (+)-butan-2-ol is + 13.5°: [Calculate up to 2 decimal place]


*Answer can only contain numeric values
Major Organic Chemistry - Question 53

Double bond which is most reactive for hydrogenation reaction with Wilkinson’s catalyst?


*Answer can only contain numeric values
Major Organic Chemistry - Question 54

Calculate the sum of π bonds, Oxygen atom(s) and Nitrogen atom(s) in the final product of following chemical conversion:


*Answer can only contain numeric values
Major Organic Chemistry - Question 55

The number of chemical reaction(s) which represent correct product formation:





*Answer can only contain numeric values
Major Organic Chemistry - Question 56

Consider the given chemical reaction and find the value of ‘X’:


*Answer can only contain numeric values
Major Organic Chemistry - Question 57

The alkyl halide C4H9Br(A) reacts with alcoholic KOH and gives an alkene (B), which reacts with bromide to give dibromide (C). (C) is transformed with KOH & sodamide to gas (D) which forms a precipitate when passed through an ammonical silver nitrate solution. Total number of sp3 carbon present in C and D would be:


*Answer can only contain numeric values
Major Organic Chemistry - Question 58

Number of sp2 hybridized carbon in the product would be?


*Answer can only contain numeric values
Major Organic Chemistry - Question 59

How many molecules of CO2 will be released in the following chemical reaction?


*Answer can only contain numeric values
Major Organic Chemistry - Question 60

Sum of molar mass of the gaseous product(s) formed:


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