|
|
Mahi DasguptaEduRev Chemistry |
|
Mahi Dasgupta
EduRev Chemistry
|
Content, tests & courses saved by you for accessing later. (visible to you only)
Top Scoring Tests by Mahi
Work, Power And Energy MSQ | 16/20 |
Magnetic Effect Of Current MSQ | 16/20 |
Test: Reaction Mechanism Level - 6 | 34/48 |
Math - 2016 Past Year Paper | 67/100 |
Biotechnology - 2017 Past Year Paper | 65/100 |
Model Test Paper, Math, Feb. - 2017 | 64/100 |
Biological Science - 2016 Past Year Paper | 64/100 |
Biotechnology Model Test (2017) | 61/100 |
Geology - 2015 Past Year Paper | 60/100 |
Test: Coordination Chemistry- 3 | 37/62 |
Discussed Questions
|
Mahi Dasgupta upvoted • 2 weeks ago |
A block of mass 2 kg is at rest on a horizontal table. The coefficient of friction between the block and the table is 0.1. A horizontal force 3 N is applied to the block. The speed of the block (in m/ s) after it has moved a distance 10 m is _______________.
(Specify the answer upto 3 decimal no.)
Correct answer is '3162'. Can you explain this answer?
A block of mass 2 kg is at rest on a horizontal table. The coefficient of friction between the block and the table is 0.1. A horizontal force 3 N is applied to the block. The speed of the block (in m/ s) after it has moved a distance 10 m is _______________.
(Specify the answer upto 3 decimal no.)
(Specify the answer upto 3 decimal no.)
|
Edurev.iitjam answered |
HgCl2 and I2 both when dissolved in water containing I–, ions, the pair of species formed is:- a)HgI2, I–
- b)HgI42–, I3–
- c)Hg2I2, I–
- d)HgI2, I3–
Correct answer is option 'B'. Can you explain this answer?
HgCl2 and I2 both when dissolved in water containing I–, ions, the pair of species formed is:
a)
HgI2, I–
b)
HgI42–, I3–
c)
Hg2I2, I–
d)
HgI2, I3–
|
|
Mahi Dasgupta answered • 3 weeks ago |
Introduction
When considering the interaction of HgCl2 and I2 in the presence of iodide ions (I–), a complex chemical reaction occurs, leading to the formation of distinct species.
Reaction of HgCl2 with I–
- HgCl2, when dissolved in water, dissociates into Hg²⁺ and Cl– ions.
- The presence of I– ions allows for the formation of mercuric iodide (HgI2) through the... more
When considering the interaction of HgCl2 and I2 in the presence of iodide ions (I–), a complex chemical reaction occurs, leading to the formation of distinct species.
Reaction of HgCl2 with I–
- HgCl2, when dissolved in water, dissociates into Hg²⁺ and Cl– ions.
- The presence of I– ions allows for the formation of mercuric iodide (HgI2) through the... more
|
|
Mahi Dasgupta upvoted • Feb 16, 2025 |
The compound that undergoes decarboxylation most readily under mild condition is:- a)
- b)
- c)
- d)
Correct answer is option 'B'. Can you explain this answer?
The compound that undergoes decarboxylation most readily under mild condition is:
a)
b)
c)
d)
|
Urban Dots answered |
Beta keto acids readily undergo thermal decarboxylation. The compound that undergoes decarboxylation most readily under mild condition is 2-oxocyclohexanecarboxylic acid (option B) as it is a beta keto acid. The product obtained is cyclohexanone.
|
|
Mahi Dasgupta upvoted • Feb 10, 2025 |
In the trigonal bipyramidal crystal field, the d orbital with the highest energy is:- a)dxy
- b)
- c)dyx
- d)
Correct answer is option 'D'. Can you explain this answer?
In the trigonal bipyramidal crystal field, the d orbital with the highest energy is:
a)
dxy
b)
c)
dyx
d)
|
|
Edurev.iitjam answered |
- The trigonal bipyramidal crystal field splits the d orbitals into different energy levels.
- The dz2 orbital has the highest energy because it points along the z-axis, which aligns with the axial positions of the trigonal bipyramidal geometry.
- These axial positions experience more repulsion, increasing the energy of the dz
- Other orbitals, like dxy and dyx, experience less direct interaction with ligands, leading to lower energy levels.
|
|
Mahi Dasgupta upvoted • Jan 30, 2025 |
The relative nucleophilicity in polar, protic, solvents of the following is:
- a)I > II > III
- b)II > III > I
- c) I > III > II
- d) III > I > II
Correct answer is option 'A'. Can you explain this answer?
The relative nucleophilicity in polar, protic, solvents of the following is:
a)
I > II > III
b)
II > III > I
c)
I > III > II
d)
III > I > II
|
Veda Institute answered |
Correct Answer :- a
Explanation : In a polar protic solvent (CH3OH), nucleophilicity increases down a column of the periodic table. So S- is more nucleophilic than O-.
For two species with the same attacking atom, the more basic is the more nucleophilic, so CH3CH2O- is more nucleophilic than CH3CO2-
CO2- give identical str resonance hybrids more solvated, very less nucleophilic.
A parallel plate capacitor is maintained at a potential difference of 10V. An electron starts from rest from the negative end. The final momentum (in units of 10–24 kg m/s) it gains when it reaches the positive plate would be ___________ (Upto 2 decimal places)
Correct answer is between '1.60,1.80'. Can you explain this answer?
A parallel plate capacitor is maintained at a potential difference of 10V. An electron starts from rest from the negative end. The final momentum (in units of 10–24 kg m/s) it gains when it reaches the positive plate would be ___________ (Upto 2 decimal places)
|
|
Mahi Dasgupta answered • Jan 18, 2025 |
Understanding the Problem
An electron is placed in a parallel plate capacitor with a potential difference of 10V. We need to calculate the final momentum of the electron as it accelerates from the negative plate to the positive plate.
Key Concepts
- Electric Field (E): The electric field between parallel plates is given by E = V/d, where V is the potential diffe... more
An electron is placed in a parallel plate capacitor with a potential difference of 10V. We need to calculate the final momentum of the electron as it accelerates from the negative plate to the positive plate.
Key Concepts
- Electric Field (E): The electric field between parallel plates is given by E = V/d, where V is the potential diffe... more
Which of the following isotherm is applicable to physical adsorption?- a)Langmuir
- b)BET
- c)Freundlich
- d)Kisluik
Correct answer is option 'C'. Can you explain this answer?
Which of the following isotherm is applicable to physical adsorption?
a)
Langmuir
b)
BET
c)
Freundlich
d)
Kisluik
|
|
Mahi Dasgupta answered • Dec 06, 2024 |
Understanding Physical Adsorption Isotherms
Physical adsorption, also known as physisorption, involves the weak van der Waals forces between adsorbate molecules and adsorbent surfaces. The isotherm models describe how these molecules interact with the surface at varying pressures and temperatures.
Isotherm Types:
- Langmuir Isotherm: This model assumes monolaye... more
Physical adsorption, also known as physisorption, involves the weak van der Waals forces between adsorbate molecules and adsorbent surfaces. The isotherm models describe how these molecules interact with the surface at varying pressures and temperatures.
Isotherm Types:
- Langmuir Isotherm: This model assumes monolaye... more
The first row transition metal complexes having tetrahedral geometry are high- spin due to
- a)Δt > P
- b)Δt < P
- c)Δt = P
- d)Δt > Δo
Correct answer is option 'B'. Can you explain this answer?
The first row transition metal complexes having tetrahedral geometry are high- spin due to
a)
Δt > P
b)
Δt < P
c)
Δt = P
d)
Δt > Δo
|
|
Mahi Dasgupta answered • Sep 27, 2024 |
Understanding Tetrahedral Geometry in First Row Transition Metal Complexes
Tetrahedral complexes are crucial in coordination chemistry, especially concerning their electronic configurations and magnetic properties. The high-spin state of these complexes can be explained by comparing the crystal field splitting energy (Δt) and the pairing energy (P).
Crystal Field Splitting Ener... more
- In a tetrahedral geometry, the splitting of the d-orbitals leads to a smaller energy difference between the higher energy (eg) and lower energy (t2) orbitals.
- Typically, for tetrahedral complexes, the value of Δt is less than that of octahedral complexes due to their geometric arrangement.
Pairing Energy (P)
- Pairing energy refers to the energy required to pair two electrons in the same orbital.
- In tetrahedral complexes, since Δt < p,="" it="" becomes="" energetically="" favorable="" for="" electrons="" to="" occupy="" higher="" energy="" orbitals="" rather="" than="" pair="" up="" in="" lower="" energy="" />
High-Spin State
- The high-spin configuration occurs when the crystal field splitting energy is not sufficient to overcome the pairing energy.
- Thus, electrons fill the available orbitals singly before pairing up, leading to unpaired electrons and magnetic properties.
Conclusion
- Therefore, option B (Δt < p)="" accurately="" describes="" why="" first-row="" transition="" metal="" complexes="" with="" tetrahedral="" geometry="" are="" high-spin.="" in="" these="" complexes,="" the="" energy="" cost="" of="" pairing="" exceeds="" the="" energy="" gained="" from="" lowering="" their="" potential="" energy,="" resulting="" in="" a="" preference="" for="" unpaired="" electrons.="" p)="" accurately="" describes="" why="" first-row="" transition="" metal="" complexes="" with="" tetrahedral="" geometry="" are="" high-spin.="" in="" these="" complexes,="" the="" energy="" cost="" of="" pairing="" exceeds="" the="" energy="" gained="" from="" lowering="" their="" potential="" energy,="" resulting="" in="" a="" preference="" for="" unpaired="" />
Tetrahedral complexes are crucial in coordination chemistry, especially concerning their electronic configurations and magnetic properties. The high-spin state of these complexes can be explained by comparing the crystal field splitting energy (Δt) and the pairing energy (P).
Crystal Field Splitting Ener... more
- In a tetrahedral geometry, the splitting of the d-orbitals leads to a smaller energy difference between the higher energy (eg) and lower energy (t2) orbitals.
- Typically, for tetrahedral complexes, the value of Δt is less than that of octahedral complexes due to their geometric arrangement.
Pairing Energy (P)
- Pairing energy refers to the energy required to pair two electrons in the same orbital.
- In tetrahedral complexes, since Δt < p,="" it="" becomes="" energetically="" favorable="" for="" electrons="" to="" occupy="" higher="" energy="" orbitals="" rather="" than="" pair="" up="" in="" lower="" energy="" />
High-Spin State
- The high-spin configuration occurs when the crystal field splitting energy is not sufficient to overcome the pairing energy.
- Thus, electrons fill the available orbitals singly before pairing up, leading to unpaired electrons and magnetic properties.
Conclusion
- Therefore, option B (Δt < p)="" accurately="" describes="" why="" first-row="" transition="" metal="" complexes="" with="" tetrahedral="" geometry="" are="" high-spin.="" in="" these="" complexes,="" the="" energy="" cost="" of="" pairing="" exceeds="" the="" energy="" gained="" from="" lowering="" their="" potential="" energy,="" resulting="" in="" a="" preference="" for="" unpaired="" electrons.="" p)="" accurately="" describes="" why="" first-row="" transition="" metal="" complexes="" with="" tetrahedral="" geometry="" are="" high-spin.="" in="" these="" complexes,="" the="" energy="" cost="" of="" pairing="" exceeds="" the="" energy="" gained="" from="" lowering="" their="" potential="" energy,="" resulting="" in="" a="" preference="" for="" unpaired="" />
Classify non ideal solution in light of thermodynamic criteria?
|
|
Mahi Dasgupta answered • Aug 14, 2024 |
Classification of Non-Ideal Solutions based on Thermodynamic Criteria
Non-ideal solutions can be classified based on thermodynamic criteria into three categories: ideal solutions, non-ideal solutions with positive deviations, and non-ideal solutions with negative deviations.
Ideal Solutions
An ideal solution is one where the interactions between the molecules of the components are similar in the pure state as well as in the solution state. The enthalpy of mixing is zero, and the solution obeys Raoult's law over the entire composition range.
Non-Ideal Solutions with Positive Deviations
Non-ideal solutions with positive deviations occur when the interactions between the molecules of the components in the solution are weaker than in the pure state. This leads to an increase in the vapor pressure of the solution compared to that predicted by Raoult's law. These solutions have a positive deviation from Raoult's law, and the enthalpy of mixing is positive.
Non-Ideal Solutions with Negative Deviations
Non-ideal solutions with negative deviations occur when the interactions between the molecules of the components in the solution are stronger than in the pure state. This leads to a decrease in the vapor pressure of the solution compared to that predicted by Raoult's law. These solutions have a negative deviation from Raoult's law, and the enthalpy of mixing is negative.
In conclusion, the classification of non-ideal solutions based on thermodynamic criteria helps us understand the behavior of solutions and predict their properties accurately.
Which element had the highest melting points among group 14 element?
|
|
Mahi Dasgupta answered • Jul 13, 2024 |
The Element with the Highest Melting Point in Group 14 Elements
Explanation:
Among the group 14 elements, carbon has the highest melting point. Here's why:
Therefore, due to its unique atomic structure, strong covalent bonding, lack of metallic bonding, and the presence of allotropes like diamond, carbon stands out with the highest melting point among the group 14 elements.
Explanation:
Among the group 14 elements, carbon has the highest melting point. Here's why:
- Atomic Structure: Carbon has a unique atomic structure compared to other group 14 elements. It forms strong covalent bonds with other carbon atoms, leading to a network structure known as diamon... more
- Bonding: The strong covalent bonds in diamond result in a three-dimensional network structure where each carbon atom is bonded to four other carbon atoms. This network structure requires a significant amount of energy to break the bonds, leading to a high melting point.
- Lack of Metallic Bonding: Unlike other group 14 elements such as silicon, tin, and lead, carbon does not exhibit metallic bonding. Metallic bonding typically results in lower melting points compared to covalent bonding found in carbon.
- Allotropes: Carbon exists in various allotropes, including diamond and graphite. Diamond, with its strong covalent bonds, has the highest melting point among the group 14 elements. Graphite, on the other hand, has a lower melting point due to its layered structure and weaker intermolecular forces.
Therefore, due to its unique atomic structure, strong covalent bonding, lack of metallic bonding, and the presence of allotropes like diamond, carbon stands out with the highest melting point among the group 14 elements.
What is spectroscopy?
|
|
Mahi Dasgupta answered • Jun 09, 2024 |
What is Spectroscopy?
Spectroscopy is a branch of science that deals with the study of the interaction between matter and electromagnetic radiation. It involves the analysis of the absorption, emission, or scattering of light or other electromagnetic radiation by atoms or molecules. Spectroscopy is widely used in various scientific fields such as chemistry, physics, biology, and astron... more
Spectroscopy is a branch of science that deals with the study of the interaction between matter and electromagnetic radiation. It involves the analysis of the absorption, emission, or scattering of light or other electromagnetic radiation by atoms or molecules. Spectroscopy is widely used in various scientific fields such as chemistry, physics, biology, and astron... more
The number of functions from the set {a,b,c,d} to the set {1,2,3,4} is ______.
Correct answer is '81'. Can you explain this answer?
The number of functions from the set {a,b,c,d} to the set {1,2,3,4} is ______.
|
|
Mahi Dasgupta answered • Apr 23, 2024 |
Calculating the Number of Functions
To calculate the number of functions from the set {a, b, c, d} to the set {1, 2, 3, 4}, we need to consider each element in the domain set mapping to an element in the codomain set.
Mapping for each element
- For element 'a', there are 4 choices in the codomain set. So, 'a' can map to any of the 4 elements in the codomain set.<... more
To calculate the number of functions from the set {a, b, c, d} to the set {1, 2, 3, 4}, we need to consider each element in the domain set mapping to an element in the codomain set.
Mapping for each element
- For element 'a', there are 4 choices in the codomain set. So, 'a' can map to any of the 4 elements in the codomain set.<... more
|
|
Mahi Dasgupta asked • Mar 23, 2024 |
Observe the underlined/bold hydrogen. In HNMR, how many spectral lines will that bolded hydrogen be split into?
- a)21 lines (multiplet)
- b)7 lines (septet)
- c)1 line (singlet)
- d)2 lines (doublet)
Correct answer is option 'D'. Can you explain this answer?
Observe the underlined/bold hydrogen. In HNMR, how many spectral lines will that bolded hydrogen be split into?
a)
21 lines (multiplet)
b)
7 lines (septet)
c)
1 line (singlet)
d)
2 lines (doublet)
|
|
Edurev.iitjam answered |
(1+1)=2 lines
- Within 1H NMR spectroscopy there are a couple important factors to understand, including the ppm shift (delta) and the splitting pattern. Here we are focusing on the splitting pattern for individual hydrogens. This is important for it lays the groundwork for understanding the patterns of peaks seen on large compound NMR’s.
- When determining the splitting of any hydrogen you must use the n+1 rule. Before going into that rule we must understand two things, 1. only nonequivalent hydrogens (protons) couple and 2. usually they only couple to other hydrogens (protons) attached to adjacent carbons. Nonequivalent means the protons occupy their own unique spatial environment with different atoms surrounding them. Typically two hydrogens attached to the same carbon are equivalent (though this isn’t always the case and you must think about where the hydrogens are located in space and see whether they are adjacent to different or similar chemical groups).
- The n+1 rule is performed as follows. N stands for the number of equivalent protons that are not equivalent to the proton of interest (the one we are trying to determine the splitting for). We multiply together each group of protons that are nonequivalent to the proton of interest. For example, lets say there are two groups of protons that are nonequivalent to the proton of interest, in group A there are 2 protons, and in group B there are 3 protons. We would use the n+1 rule for group A and get (2+1) = 3 and for group B get (3+1) = 4. We would then multiply these two numbers together to get the splitting for the proton of interest, thus 3 x 4 = 12 lines that the proton of interest would be split into. Proper use of this rule should allow you to get all NMR splitting questions correct (and elevate your understanding of why a certain NMR printout looks the way it does).
How equivalent conductance (A) and molar conductance (Am) related for the electrolytes: (6) KC (1) AL2 (SO4)3?
|
|
Mahi Dasgupta answered • Feb 29, 2024 |
Relationship between Equivalent Conductance and Molar Conductance
Definition of Equivalent Conductance (A)
- Equivalent conductance (A) is defined as the conductance of an electrolyte that produces one equivalent of the electrolyte ions in solution.
- It is represented by the symbol A and is measured in siemens per centimeter square per equivalent (S ... more
Convert crotyl alcohol to cronaldehyde in single step?
|
|
Mahi Dasgupta answered • Feb 07, 2024 |
Conversion of Crotyl Alcohol to Cronaldehyde
Introduction:
Crotyl alcohol is an unsaturated alcohol with the molecular formula C4H8O. It contains a double bond between the second and third carbon atoms. Cronaldehyde, on the other hand, is an aldehyde with the molecular formula C4H6O. The conversion of crotyl alcohol to cronaldehyde can be achieved through a single-ste... more
Introduction:
Crotyl alcohol is an unsaturated alcohol with the molecular formula C4H8O. It contains a double bond between the second and third carbon atoms. Cronaldehyde, on the other hand, is an aldehyde with the molecular formula C4H6O. The conversion of crotyl alcohol to cronaldehyde can be achieved through a single-ste... more
|
|
Mahi Dasgupta asked • Oct 02, 2023 |
The expression 
for the volume of a cone is equal to - a)
- b)
- c)
- d)
Correct answer is option 'D'. Can you explain this answer?
The expression for the volume of a cone is equal to
for the volume of a cone is equal to a)
b)
c)
d)
|
|
Veda Institute answered |
Choices (a) and (d) can be correct because variable is r in these two.
By integrating (d), we get 1/3πr2H, which is volume of cone.
By integrating (d), we get 1/3πr2H, which is volume of cone.
|
|
Mahi Dasgupta asked • Aug 17, 2023 |
Can I get the details of the seat allocation process for EWS candidates in IITs through IIT JAM Chemistry?
|
|
Shivani Mehta answered |
Seat Allocation Process for EWS Candidates in IITs through IIT JAM Chemistry
Introduction
The seat allocation process for EWS (Economically Weaker Section) candidates in IITs (Indian Institutes of Technology) through IIT JAM (Joint Admission Test for M.Sc) Chemistry follows a specific procedure. It is important to understand the steps involved in order to have a clear... more
Introduction
The seat allocation process for EWS (Economically Weaker Section) candidates in IITs (Indian Institutes of Technology) through IIT JAM (Joint Admission Test for M.Sc) Chemistry follows a specific procedure. It is important to understand the steps involved in order to have a clear... more
|
|
Mahi Dasgupta asked • Aug 17, 2023 |
Can I get the details of the reporting time and exam duration mentioned on the IIT JAM Chemistry admit card?
|
|
Shivani Mehta answered |
Reporting Time:
The reporting time mentioned on the IIT JAM Chemistry admit card is the time at which candidates are required to arrive at the examination center. It is important to reach the center on time to complete the necessary formalities before the start of the exam. The reporting time is usually mentioned on the admit card to avoid any confusion and ensure a smooth conduct of t... more
The reporting time mentioned on the IIT JAM Chemistry admit card is the time at which candidates are required to arrive at the examination center. It is important to reach the center on time to complete the necessary formalities before the start of the exam. The reporting time is usually mentioned on the admit card to avoid any confusion and ensure a smooth conduct of t... more
|
|
Mahi Dasgupta asked • Aug 14, 2023 |
Are there any tie-breaking criteria applied if two or more candidates secure the same marks in IIT JAM Chemistry?
|
Yashvi Roy answered |
Tie-breaking criteria in IIT JAM Chemistry
When two or more candidates secure the same marks in IIT JAM Chemistry, tie-breaking criteria are applied to determine the final ranking. These criteria are designed to ensure fairness and accuracy in the selection process. Let's take a closer look at the tie-breaking rules:
1. Ratio of positive and negative marks:
... more
When two or more candidates secure the same marks in IIT JAM Chemistry, tie-breaking criteria are applied to determine the final ranking. These criteria are designed to ensure fairness and accuracy in the selection process. Let's take a closer look at the tie-breaking rules:
1. Ratio of positive and negative marks:
... more
|
|
Mahi Dasgupta asked • Aug 02, 2023 |
How many sections are there in the Chemistry paper of IIT JAM?
|
|
Soumya Sharma answered |
Introduction:
The Chemistry paper of IIT JAM (Joint Admission Test for M.Sc.) is divided into three sections. These sections aim to assess the candidate's understanding and knowledge in different areas of chemistry. Let's discuss each section in detail.
Section 1: Physical Chemistry
Physical Chemistry is the branch of chemistry that deals with the study of the ph... more
The Chemistry paper of IIT JAM (Joint Admission Test for M.Sc.) is divided into three sections. These sections aim to assess the candidate's understanding and knowledge in different areas of chemistry. Let's discuss each section in detail.
Section 1: Physical Chemistry
Physical Chemistry is the branch of chemistry that deals with the study of the ph... more
|
|
Mahi Dasgupta asked • Jul 15, 2023 |
The number of molecules of the reactants involved in a single stage of the reaction indicates- a)the order of the reaction
- b)the molecularity of the reaction
- c)the rapid step of the reaction mechanism, and
- d)the reaction half-life.
Correct answer is option 'B'. Can you explain this answer?
The number of molecules of the reactants involved in a single stage of the reaction indicates
a)
the order of the reaction
b)
the molecularity of the reaction
c)
the rapid step of the reaction mechanism, and
d)
the reaction half-life.
|
|
Shreya Chauhan answered |
Introduction:
In chemical reactions, reactants undergo a transformation to form products. The rate and mechanism of a reaction depend on various factors, including the number of molecules of the reactants involved in each step. This information is crucial in understanding the molecularity of the reaction.
Understanding Molecularity:
Molecularity refers to the num... more
In chemical reactions, reactants undergo a transformation to form products. The rate and mechanism of a reaction depend on various factors, including the number of molecules of the reactants involved in each step. This information is crucial in understanding the molecularity of the reaction.
Understanding Molecularity:
Molecularity refers to the num... more
|
|
Mahi Dasgupta asked • Dec 06, 2022 |
Identify the trans isomer of [Pt(NH3)2Cl2] from the following.- a)
- b)
- c)
- d)
Correct answer is option 'B'. Can you explain this answer?
Identify the trans isomer of [Pt(NH3)2Cl2] from the following.
a)
b)
c)
d)
|
Vivek Khatri answered |
The compound [Pt(NH3)2Cl2] forms two geometric isomers, one cis and one trans. When the two Cl ligands are arranged adjacent to each other, a cis isomer is formed and when the two Cl ligands are opposite to each other, a trans ligand is formed.
Fetching relevant content for you
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup