NEET Exam  >  NEET Tests  >  Test: Physical Properties & General Reactions - NEET MCQ

Test: Physical Properties & General Reactions - NEET MCQ


Test Description

24 Questions MCQ Test - Test: Physical Properties & General Reactions

Test: Physical Properties & General Reactions for NEET 2024 is part of NEET preparation. The Test: Physical Properties & General Reactions questions and answers have been prepared according to the NEET exam syllabus.The Test: Physical Properties & General Reactions MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Physical Properties & General Reactions below.
Solutions of Test: Physical Properties & General Reactions questions in English are available as part of our course for NEET & Test: Physical Properties & General Reactions solutions in Hindi for NEET course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Test: Physical Properties & General Reactions | 24 questions in 35 minutes | Mock test for NEET preparation | Free important questions MCQ to study for NEET Exam | Download free PDF with solutions
Test: Physical Properties & General Reactions - Question 1

Only One Option Correct Type

Direction (Q, Nos. 1-9) This section contains 9 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.

Q. 

Which of the following will give a racemic mixture on reduction with NaBH4 followed by acid work-up?

Detailed Solution for Test: Physical Properties & General Reactions - Question 1

NaBH4 brings about reduction of carbonyls by hydrid e transfer mechanism at planar sp2 carbon. Hence, if a chiral carbon is generated, racemic mixture is always produced.

Test: Physical Properties & General Reactions - Question 2

What would be the major product in the following reaction?

Detailed Solution for Test: Physical Properties & General Reactions - Question 2

LiAIH4 reduces both carbonyls and carboxylic groups but does not reduce olefinic bond.

1 Crore+ students have signed up on EduRev. Have you? Download the App
Test: Physical Properties & General Reactions - Question 3

Which of the following on reaction with excess of NaHSO3 in aqueous solution will give mixture of salts which can be separated into two fractions by fractional crystallisation?

Detailed Solution for Test: Physical Properties & General Reactions - Question 3

In the above reaction, four stereoisomers, two pairs of enantiomers are formed. Each member of a pair of enantiomer is diastereomer of each member of other pair of enantiomer. Hence, fractional crystallisation would give two fractions, each containing racemic mixture.

Test: Physical Properties & General Reactions - Question 4

Which is the most suitable reagent for the following transformation?

Detailed Solution for Test: Physical Properties & General Reactions - Question 4

Clemmensen reduction is suitable for reductio n of carbonyls containing additional acidic functional group.

Test: Physical Properties & General Reactions - Question 5

Which is the most suitable reagent for the following transformation?

 

Detailed Solution for Test: Physical Properties & General Reactions - Question 5

Wolff-Kishner reduction is suitable for reduction of carbonyls containing olefinic bonds. If Clemmensen reduction is done, HCI also attacks olefinic bonds.

Test: Physical Properties & General Reactions - Question 6

The reagent which can best bring about the following transformation is

Detailed Solution for Test: Physical Properties & General Reactions - Question 6

With aluminium isopropoxide (MPV reduction), carbonyls are selectively reduced to alcohols leaving other groups intact.

Test: Physical Properties & General Reactions - Question 7

The most probable product of the following reaction is

Detailed Solution for Test: Physical Properties & General Reactions - Question 7


If possible, intramolecular reaction is preferred over intermolecular reaction.

Test: Physical Properties & General Reactions - Question 8

Consider the following reaction,

Q. 

The most likely organic product X is

Detailed Solution for Test: Physical Properties & General Reactions - Question 8

Test: Physical Properties & General Reactions - Question 9

Consider the following reaction,

Q. 

The most likely organic product X is

Detailed Solution for Test: Physical Properties & General Reactions - Question 9

*Multiple options can be correct
Test: Physical Properties & General Reactions - Question 10

One or More than One Options Correct Type

Direction (Q. Nos. 10-13) This section contains 4 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.

Consider the following reaction,

Q. 

The organic product(s) formed above is/are

Detailed Solution for Test: Physical Properties & General Reactions - Question 10

In MPV reduction, carbonyl is reduced to alcohol while isopropoxide fraction of reducing agent is oxidised to acetone.

*Multiple options can be correct
Test: Physical Properties & General Reactions - Question 11

Consider the reaction given below,

Q. 

The correct observation regarding the above reaction is/are

Detailed Solution for Test: Physical Properties & General Reactions - Question 11

Aldehydes and ketones form bisulp hite salt with NaHSO3 which is insoluble in concentrated NaHSO3 solution due to common ion effect. Hence, if NaHSO3 is in limited quantity, precipitation may not take place.

*Multiple options can be correct
Test: Physical Properties & General Reactions - Question 12

Consider the reaction given below,

Q. 

The correct deduction(s) regarding the above reagent is/are

Detailed Solution for Test: Physical Properties & General Reactions - Question 12

Reducing agent (Zn(Hg)-HCI) in Clemmensen reduction does not affect the halide group. If W olff-Kishner (N2H4 - OH-) reduction is done, OH- may bring about SN2 and E2 reaction with halide group.

*Multiple options can be correct
Test: Physical Properties & General Reactions - Question 13

Consider the following reaction,

Q. 

The correct deduction(s) regarding mechanism of the above reaction is/are

Detailed Solution for Test: Physical Properties & General Reactions - Question 13

H- (hydride) ion undergoes nu cle ophilic ad dition at sp2 carbon of carbonyls. Aldehydes are more reactive than ketones due to less steric hindrance in former case. Since, nucleophilic attack of hydride ion occur at planar carbonyl carbon, there is equal probability of attack from both side of plane giving racemic mixture if chiral carbon is generated.

Test: Physical Properties & General Reactions - Question 14

Comprehension Type

Direction (Q. Nos. 14-16) This section contains a paragraph, describing theory, experiments, data, etc. Three questions related to the paragraph have been given. Each question has only one correct answer among the four given options (a), (b), (c) and (d).

Passage

An organic compound A (C7H16O) shows both enantiomerism and diastereomerism. Treatment of a pure enantiomer of A with Na2CrO4 /Dil. H2SO4 gives B (C7H14O) - Also A on dehydration with concentrated H2SO4 gives a single alkene C (C7H14). Ozonolysis of C followed by work-up with Zn-H2O gives D (C5H10O) as one of the product which gives racemic mixture on reduction with NaBH4.

Q. 

The structure of A satisfying the above criteria is

Detailed Solution for Test: Physical Properties & General Reactions - Question 14

Since, A is completely saturated, it must contain more than one chiral carbon atoms in order to show both enantiomerism and diastereomerism. Also, C on ozonolysis gives D (C5H10O) as one product, other product must be CH3SHO. Hence, C must be 

Test: Physical Properties & General Reactions - Question 15

An organic compound A (C7H16O) shows both enantiomerism and diastereomerism. Treatment of a pure enantiomer of A with Na2CrO4 /Dil. H2SO4 gives B (C7H14O) - Also A on dehydration with concentrated H2SO4 gives a single alkene C (C7H14). Ozonolysis of C followed by work-up with Zn-H2O gives D (C5H10O) as one of the product which gives racemic mixture on reduction with NaBH4.

Q. 

If B is reduced with LiAIH4 followed by acid hydrolysis will give

Detailed Solution for Test: Physical Properties & General Reactions - Question 15

Since, A is completely saturated, it must contain more than one chiral carbon atoms in order to show both enantiomerism and diastereomerism. Also, C on ozonolysis gives D (C5H10O) as one product, other product must be CH3SHO. Hence, C must be 
B is enantiomeric. If a pure enantiomer of B is reduced with LiAIH4, pair of diastereomers would be formed.

Test: Physical Properties & General Reactions - Question 16

An organic compound A (C7H16O) shows both enantiomerism and diastereomerism. Treatment of a pure enantiomer of A with Na2CrO4 /Dil. H2SO4 gives B (C7H14O) - Also A on dehydration with concentrated H2SO4 gives a single alkene C (C7H14). Ozonolysis of C followed by work-up with Zn-H2O gives D (C5H10O) as one of the product which gives racemic mixture on reduction with NaBH4.

Q. 

The correct statement regarding the compound D is

Detailed Solution for Test: Physical Properties & General Reactions - Question 16

Since, A is completely saturated, it must contain more than one chiral carbon atoms in order to show both enantiomerism and diastereomerism. Also, C on ozonolysis gives D (C5H10O) as one product, other product must be CH3SHO. Hence, C must be 

*Answer can only contain numeric values
Test: Physical Properties & General Reactions - Question 17

One integer Value Correct Type

Direction (Q. Nos. 17-22) This section contains 6 questions. When worked out will result in an integer from 0 to 9 (both inclusive).

Q. 

If all the aldehyde isomers of C5H10O is independently treated with HCN/NaCN solution, how many of them will give racemic mixture of cyanohydrin?


Detailed Solution for Test: Physical Properties & General Reactions - Question 17


IV is enantiomeric. Its pure enantiomer, with HCN/NaCN, would produce pair of diastereomers.

*Answer can only contain numeric values
Test: Physical Properties & General Reactions - Question 18

If one molecule of trioxane is heated, how many molecules of formaldehyde would be formed?


Detailed Solution for Test: Physical Properties & General Reactions - Question 18

*Answer can only contain numeric values
Test: Physical Properties & General Reactions - Question 19

A mixture containing all isomeric cyclohexanedione is treated with excess of NaHSO3 solution. How many different disulphite salts are formed?


Detailed Solution for Test: Physical Properties & General Reactions - Question 19



*Answer can only contain numeric values
Test: Physical Properties & General Reactions - Question 20

Consider the following reaction,

Q

How many deuterium would be incorporated in the final product?


Detailed Solution for Test: Physical Properties & General Reactions - Question 20

*Answer can only contain numeric values
Test: Physical Properties & General Reactions - Question 21

If glyoxal glycol is treated with a mixture of CH3MgBr and C2H5MgBr in diethyl ether followed by acid hydrolysis, how many different diols would be formed, which are simultaneously optically active?


Detailed Solution for Test: Physical Properties & General Reactions - Question 21


One pair of enantiomers for each (I) and (II) while two pairs of enantiomers for (III). 

*Answer can only contain numeric values
Test: Physical Properties & General Reactions - Question 22

Consider the reaction given below,

Q. 

X is formed in which a new ring is formed. How many atoms are present in this new ring?


Detailed Solution for Test: Physical Properties & General Reactions - Question 22

Test: Physical Properties & General Reactions - Question 23

Matching List Type

Direction (Q. Nos. 23 and 24) Choices for the correct combination o f elements from Column I and Column II are given as options (a), (b), (c) and (d), out of which one is correct.

Q.

Match the reactants from Column I with the reagents and expected outcomes from Column II. Mark the correct option form the codes given below.

Detailed Solution for Test: Physical Properties & General Reactions - Question 23

(i) It has a carbonyl carbon that turns chiral on reduction with hydrides. Hence, with LiAIH4 or aluminium isopropoxide, gives racemic mixture. Also, it has no other functional groups, either Clemmensen reduction or Wolff-Kishner reduction can be used.
(ii) It has an olefinic double bond, Clemmensen reduction would not be suitable for selective reduction of carbonyl group.
(iii) LiAlH4 also reduces primary halide but aluminium isopropoxide does not. Wolff-Kishner reduction would not be suitable because HO- reacts with halide group (EN2 or E2).
(iv) Same reasons as with (i).

Test: Physical Properties & General Reactions - Question 24

Match the reactions from Column I with the properties of products from Column II. Mark the correct option form the codes given below.

Detailed Solution for Test: Physical Properties & General Reactions - Question 24





Information about Test: Physical Properties & General Reactions Page
In this test you can find the Exam questions for Test: Physical Properties & General Reactions solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Physical Properties & General Reactions, EduRev gives you an ample number of Online tests for practice

Top Courses for NEET

Download as PDF

Top Courses for NEET