Organic Analysis


60 Questions MCQ Test MOCK Test Series for IIT JAM Chemistry | Organic Analysis


Description
This mock test of Organic Analysis for Chemistry helps you for every Chemistry entrance exam. This contains 60 Multiple Choice Questions for Chemistry Organic Analysis (mcq) to study with solutions a complete question bank. The solved questions answers in this Organic Analysis quiz give you a good mix of easy questions and tough questions. Chemistry students definitely take this Organic Analysis exercise for a better result in the exam. You can find other Organic Analysis extra questions, long questions & short questions for Chemistry on EduRev as well by searching above.
QUESTION: 1

Which of the following compound is expected to show a sharp singlet for one of its protons at δ ≥ 8 ppm in 1H NMR spectrum, given that this signal remains unaffected on shaking the solution thoroughly with D2O?           

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QUESTION: 2

Sometimes, the color observed in Lassaigne’s test for nitrogen is green. It is because of:           

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QUESTION: 3

Arrange the following molecules, in their chemical shift value(s) of ortho hydrogen in 1H NMR:

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QUESTION: 4

Consider the following:
 

Order of C-H stretching frequency in IR-spectroscopy would be:

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QUESTION: 5

The major product B is:

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QUESTION: 6

The complementary strand of DNA for the following single stranded DNA sequence:   is:   
 

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QUESTION: 7

The correct sequence of the amino acids present in the tripeptide given below is:

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QUESTION: 8

One amongst the following is an alcoholic amino acid?           

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QUESTION: 9

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

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QUESTION: 10

For the detection of sulfur in an organic compound, Lassaigne’s extract is acidified with acetic acid. Lead acetate solution is then added to it. The black precipitate formed is due to the formation of ?           

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QUESTION: 11

Which of the following compound show only two signals in 1H NMR and a strong IR bond at 
~1690 cm–1:
 

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QUESTION: 12

A compound with molecular formula C5H10O does not form, 2, 4-DNP derivative. It responds positively to Iodoform test and on ozonolysis gives one mole formaldehyde. It could be:

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QUESTION: 13

The correct match of the 1H NMR chemical shift d of the following species/compound is:
 

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QUESTION: 14

In the Lassaigne’s test for the detection of nitrogen in an organic compound, the Prussian blue colour is due to the formation of _______________:           

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QUESTION: 15

The correct order of 1H NMR chemical shift (δ) values for the labeled methyl groups in the following compound is:

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QUESTION: 16

The Beckmann rearrangement of a bromo-acetophenone oxime (C8H8BrNO) gives a major product having the following 1H NMR – 9.85 (S, 1H), 7.88 (S, 1H), 7.45 (d, 1H, J=7.2), 7.17 (m, 1H, 7.12 (d, 1H, J=7.0 Hz), 2.06 (S, 3H). The structure of the product is:

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QUESTION: 17

The absorption at lmax 279 nm (ε = 15) in the UV spectrum of acetone is due to:

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QUESTION: 18

Match the following compounds with their respective classes:
  

 

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QUESTION: 19

The structure of D-(+)-glucose is:

The structure of L-(–)-glucose is:

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QUESTION: 20

Which of the following compounds will behave as a reducing sugar in an aqueous KOH solution?

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QUESTION: 21

Consider the following: 


Order of their stretching frequency in IR-spectroscopy would be:

           

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QUESTION: 22

In the UV-visible absorption spectrum of an α, β-unsaturated carbonyl compound, with increasing solvent polarity:

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QUESTION: 23

Among the following, the compound that displays an IR band at 2150 cm–1 is:

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QUESTION: 24

The compound which shows IR frequencies at both 3314 and 2126 cm–1 is:

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QUESTION: 25

 

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QUESTION: 26

Compound I gives a strong infrared absorption at 1730 cm–1. 1H NMR spectrum indicates that it has two types of hydrogen atoms; one H atom appearing as singlet at δ = 9.7 ppm and 9H atoms appearing as a singlet at δ = 1.2 ppm. The structure of I is:

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QUESTION: 27

Major product would be

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QUESTION: 28

The major product of the following is:

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QUESTION: 29

Consider the following:

Order of C-O stretching frequency in IR-spectroscopy would be:

            

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QUESTION: 30

During the detection of sulfur in an organic compound, the violet color formed by the addition of Sodium nitroprusside to Lassaigne’s extract is due to _____________:           

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*Multiple options can be correct
QUESTION: 31

Lassaigne’s test for the detection of nitrogen do/does not fail in:           

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*Multiple options can be correct
QUESTION: 32

Which of the following compound exist(s) in Zwitter ion form:
 

Solution:

Amino acids and Sulfamic acids exist as Zwitter Ions. Option C is neither an amino acid nor sulfamic acid so, does not exist as Zwitter ion where as the rest of them do.

*Multiple options can be correct
QUESTION: 33

Which of the following are present in RNA?           

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*Multiple options can be correct
QUESTION: 34

Which of the following is/are alkaloid(s):

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*Multiple options can be correct
QUESTION: 35

An organic compound having the molecular formula C10H14 exhibited three singlets in the 1H NMR spectrum. The compound(s) may be:

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*Multiple options can be correct
QUESTION: 36

Which of the following molecule/s will absorb infrared radiation?           

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*Multiple options can be correct
QUESTION: 37

Which of the following statement(s) is correct about the Amino acids:           

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*Multiple options can be correct
QUESTION: 38

Identify the correct pair of statements.

(i) Alternate name of thymine is 5-methyl uracil
(ii) Arachidonic acid molecule contains less number of carbons than palmitic acid
(iii) Cellulose contains complex halices
(iv) Aquaporin is a polypeptide

Solution:

i) Thymine is a nitrogenous base which pairs with adenine by the formation of two hydrogen bond. The molecular structure includes a ring of carbon and nitrogen with nitrogen at first and third position. A methyl group is attached to fifth carbon and an oxygen atom is attached to the second carbon. It is also known as 5-methyl uracil.

iv) Aquaporin is a water transport channel present in the cell membrane which is present in the cell. It helps in the selective transport of the water molecules.

Whereas, cellulose is the polysaccharide of unbranched chain and arachidonic acid (C20​H32​O2​) has more number of the carbon atom as compared to palmitic acid (C12​H22​O2​).

So, the correct answer is option D. 

*Multiple options can be correct
QUESTION: 39

Which of the following pyrimidine base(s). Find in DNA:

Solution:
*Multiple options can be correct
QUESTION: 40

Out of following which is not an excitation source in IR-spectroscopy is:           

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*Answer can only contain numeric values
QUESTION: 41

The maximum no of dipeptides that could be obtained by reaction of phenylalanine with leucine is____?


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*Answer can only contain numeric values
QUESTION: 42

Calculate the isoelectric point (pI) of lysine. Given the pKa of α-NH3 is 8.95, pKa of side chain NH3 is 10.53 and pKa of α-COOH is 2.18………………:  (up to 2 decimal place)


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*Answer can only contain numeric values
QUESTION: 43

Thymine is a DNA base and has a –CH3 group at Xth position. ‘X’ is:


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*Answer can only contain numeric values
QUESTION: 44

The value of (X + Y) would be if X = Total number of Monoterpenes and Y = Total number of Diterpenes




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*Answer can only contain numeric values
QUESTION: 45

The total number of essential amino acids are:






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*Answer can only contain numeric values
QUESTION: 46

In the Iodoform reaction of RCOCH3, ‘X’ mole of I2 and ‘Y’ mole of NaOH are used. Find the value of ‘X + Y’:


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*Answer can only contain numeric values
QUESTION: 47

Number of correct statements are:

I. Tertiary amines are insoluble in HBr

II. Secondary amines are insoluble in NaOH

III. Primary amines on treatment with NaNO2/HCl produce N2 gas

IV. Generally, amino acids on treatment with Ninhydrin produce blue-voilet color

V. Fehling’s solution gives positive test for both aliphatic and aromatic aldehydes

VI. Acetic acid on treatment with FeCl3 produces blood red coloration

VII. Formic acid gives positive Tollen’s test


Solution:
*Answer can only contain numeric values
QUESTION: 48

How many of the following pairs give same osazone?

Glucose-Fructose, Galactose-Talose, Altrose-Allose, Ribose-Arabinose, Idose-Gulose 


Solution:
*Answer can only contain numeric values
QUESTION: 49

Given the fact that 1, 3-butadiene has a UV absorption of 217 nm, the absorption wavelength (in nm) for the conjugated system shown below is……………,

(Use these absorption values for auxochromes groups:Alkyl: + 5; exo-cyclic double bond: + 5 every additional conjugated C = C : + 30)


Solution:
*Answer can only contain numeric values
QUESTION: 50

How many moles of formaldehyde will be formed?


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*Answer can only contain numeric values
QUESTION: 51

If 500 glucose molecules are used to make starch, how many molecules of water would be produced in the condensation reactions? [Think of starch as a linear chain of glucose molecules]:


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*Answer can only contain numeric values
QUESTION: 52

How many essential amino acids are there among following?

Histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine


Solution:
*Answer can only contain numeric values
QUESTION: 53

How many of the following statements regarding structure of proteins is/are true?
I. Primary structure helps in sequencing of amino acids and location of disulfide bonds.
II. Secondary structure sets up Protein back-bone
III. Denaturation of proteins is reversible
IV. Tertiary structure is found in globular proteins and can be revealed by X-ray crystallography
V. Keratin form derivatives of skin like hairs, feathers, claws, horns etc.
VI. Actin and Myosin are called Muscle proteins
VII. Thrombin helps in blood coagulation


Solution:
*Answer can only contain numeric values
QUESTION: 54

How many of the following compounds form zwittor ions?
Glycine, Sulphanilic acid, Anthranilic acid, Lysine, Tryptophan, Leucine.


Solution:
*Answer can only contain numeric values
QUESTION: 55

The total number of compound for which δAB in 1H NMR spectroscopy:




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*Answer can only contain numeric values
QUESTION: 56

The total number of carbonyl compounds which have higher IR stretching frequency than acetone:





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*Answer can only contain numeric values
QUESTION: 57

The number of reducing sugars among the following is……………..




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*Answer can only contain numeric values
QUESTION: 58

Number of 1H NMR signals in Phenanthracene?


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*Answer can only contain numeric values
QUESTION: 59

If two signal differ by 1.5 ppm in 300 MHz spectrophotometer, how do they differ (in ppm) in 100 MHz?


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*Answer can only contain numeric values
QUESTION: 60

How many different dipeptides could be made with 20 types of amino acids?


Solution: