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Sanaya KulkarniEduRev Chemistry |
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Sanaya Kulkarni
EduRev Chemistry
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Discussed Questions
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Sanaya Kulkarni upvoted • 3 weeks ago |
The value of Kf for water is 1.86, calculated from glucose solution. The value of Kf for water, calculated from NaCl solution will be (M.Wt of NaCl = 58.5 g/mol): - a)= 1.86
- b)< 1.86
- c)> 1.86
- d)Zero
Correct answer is option 'A'. Can you explain this answer?
The value of Kf for water is 1.86, calculated from glucose solution. The value of Kf for water, calculated from NaCl solution will be (M.Wt of NaCl = 58.5 g/mol):
a)
= 1.86
b)
< 1.86
c)
> 1.86
d)
Zero
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Anshul Mehra answered |
Ans.
The value of Kf is same as it is a constant. It is only temperature dependent and is independent of the solute.
Therefore, Kf for water for NaCl solution is 1.86.
Therefore, Kf for water for NaCl solution is 1.86.
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Sanaya Kulkarni upvoted • Feb 13, 2025 |
Which of the following complexes has the highest magnetic moment?
- a)[Fe(CN)6]4-
- b)[VO(H2O)5]2+
- c)[Cr(NH3)6]3+
- d)[Co(NH3)6]3+
Correct answer is option 'C'. Can you explain this answer?
Which of the following complexes has the highest magnetic moment?
a)
[Fe(CN)6]4-
b)
[VO(H2O)5]2+
c)
[Cr(NH3)6]3+
d)
[Co(NH3)6]3+
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Edurev.iitjam answered |
Higher the number of unpaired electrons, the higher is the magnetic moment. So, the correct option is [Cr(NH3)6]3+
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Sanaya Kulkarni upvoted • Feb 02, 2025 |
Which of the following is most basic?
- a)
- b)
- c)
- d)
Correct answer is option 'C'. Can you explain this answer?
Which of the following is most basic?
a)
b)
c)
d)
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Edurev.iitjam answered |
To determine which of the compounds is most basic, we need to analyze the nitrogen atoms in each structure and their availability to donate a lone pair of electrons.
The basicity of nitrogen-containing compounds depends on the availability of the lone pair on nitrogen. Nitrogen atoms in aromatic systems, such as pyridine or quinoline derivatives, have lone pairs that participate in resonance, which can reduce their availability for protonation. Nitrogens that are less involved in resonance and conjugation will tend to be more basic.
Analyzing each structure:
- Compound 1: This structure has nitrogen atoms in an aromatic system similar to quinoline. The lone pairs on these nitrogen atoms are somewhat delocalized due to resonance, reducing their basicity.
- Compound 2: This structure is analogous to acridine, which has a nitrogen in an aromatic system. The lone pair is part of the conjugated system, reducing its basicity.
- Compound 3: This structure has a nitrogen in a pyridine-like environment (quinazoline), but its lone pair is still somewhat available, making it relatively more basic compared to compounds where nitrogen is more deeply involved in conjugation.
- Compound 4: This structure is a pyrimidine derivative. The nitrogen atoms are part of an aromatic system where their lone pairs are involved in resonance. Therefore, they are less basic.
Conclusion:
Among the given compounds, Compound 3 (quinazoline derivative) is the most basic because its nitrogen atoms are less involved in resonance compared to the other structures, making the lone pair more available for protonation.
The correct answer is:
Option 3.
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Sanaya Kulkarni upvoted • Feb 01, 2025 |
Among the complexes:(I) K4[Fe(CN)6],
(II) K3[Co(CN)6],
(III) K4[Mn(CN)6], Jahn – Teller distortion is expected in.- a)I, II, and III
- b)III only
- c)I and II
- d)I and III
Correct answer is option 'B'. Can you explain this answer?
Among the complexes:
(I) K4[Fe(CN)6],
(II) K3[Co(CN)6],
(III) K4[Mn(CN)6], Jahn – Teller distortion is expected in.
(II) K3[Co(CN)6],
(III) K4[Mn(CN)6], Jahn – Teller distortion is expected in.
a)
I, II, and III
b)
III only
c)
I and II
d)
I and III
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Edurev.iitjam answered |
Jahn Teller Distortion in Complexes
- Jahn Teller distortion is a phenomenon that occurs in octahedral complexes with degenerate electronic states. It is caused by the interaction between the electrons in the degenerate orbitals and the molecular vibrations, leading to a distortion in the complex.
Complexes with Jahn Teller Distortion
- Among the given complexes, K4[Fe(CN)6], K3[Co(CN)6], and K4[Mn(CN)6], Jahn Teller distortion is expected only in K4[Mn(CN)6].
- K4[Fe(CN)6] and K3[Co(CN)6] have d6 electronic configuration which is not degenerate and hence do not show Jahn Teller distortion. On the other hand, K4[Mn(CN)6] has d5 electronic configuration which is degenerate. Hence, it shows Jahn Teller distortion.
In conclusion, Jahn Teller distortion is a phenomenon that occurs only in octahedral complexes with degenerate electronic states. Among the given complexes, K4[Mn(CN)6] is the only one with degenerate electronic states and hence shows Jahn Teller distortion.
the rate of formation of X2 is:
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Sanaya Kulkarni asked • Feb 13, 2024 |
According to kinetic theory of gases , the root mean square velocity is directly proportional to:
- a)T2
- b)T
- c)√T
- d)1/T
Correct answer is option 'C'. Can you explain this answer?
According to kinetic theory of gases , the root mean square velocity is directly proportional to:
a)
T2
b)
T
c)
√T
d)
1/T
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Ameya Reddy answered |
The square root of the temperature of the gas.
Which of the following complex of electron transport chain is not involved in proton pumping across the inner mitochondrial membrane. - a)Complex I
- b)Complex II
- c)Complex III
- d)Complex IV
Correct answer is option 'B'. Can you explain this answer?
Which of the following complex of electron transport chain is not involved in proton pumping across the inner mitochondrial membrane.
a)
Complex I
b)
Complex II
c)
Complex III
d)
Complex IV
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Sanaya Kulkarni answered • Oct 05, 2023 |
Complex II, also known as succinate dehydrogenase, is not involved in proton pumping across the inner mitochondrial membrane.
Complex II plays a unique role in the electron transport chain (ETC) as it is not involved in proton pumping. Here's a detailed explanation:
1. Overview of the Electron Transport Chain (ETC):
The ETC is a series of protein complexes located in the... more
Complex II plays a unique role in the electron transport chain (ETC) as it is not involved in proton pumping. Here's a detailed explanation:
1. Overview of the Electron Transport Chain (ETC):
The ETC is a series of protein complexes located in the... more
Bird flu is caused by- a)H1N1
- b)H5N1
- c)H1H9
- d)H1N16
Correct answer is option 'B'. Can you explain this answer?
Bird flu is caused by
a)
H1N1
b)
H5N1
c)
H1H9
d)
H1N16
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Sanaya Kulkarni answered • Oct 05, 2023 |
Bird flu, also known as avian influenza, is a viral disease that primarily affects birds. It is caused by the influenza A virus, with different subtypes being responsible for different outbreaks. Among the various subtypes, H5N1 is one of the most well-known and virulent strains.
Explanation:
1. Avian Influenza:
Avian influenza is a highly contagious viral infection that... more
Explanation:
1. Avian Influenza:
Avian influenza is a highly contagious viral infection that... more
Dipicolinic acid is a component of the bacterial- a)Cell wall
- b)Cell membrane
- c)Capsule
- d)Endospore
Correct answer is option 'D'. Can you explain this answer?
Dipicolinic acid is a component of the bacterial
a)
Cell wall
b)
Cell membrane
c)
Capsule
d)
Endospore
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Sanaya Kulkarni answered • Oct 05, 2023 |
Dipicolinic acid is a component of the bacterial endospore
Introduction:
Bacterial endospores are highly resistant structures formed by certain bacteria as a survival mechanism under unfavorable conditions. These endospores are dormant and metabolically inactive, allowing the bacteria to withstand extreme temperatures, desiccation, and exposure to toxic chemicals. Dip... more
Introduction:
Bacterial endospores are highly resistant structures formed by certain bacteria as a survival mechanism under unfavorable conditions. These endospores are dormant and metabolically inactive, allowing the bacteria to withstand extreme temperatures, desiccation, and exposure to toxic chemicals. Dip... more
Which of the following statements is/are correct for cyanobacteria ?- a)They can not grow in a mineral medium exposed to light and air
- b)Usually filamentous forms are involved in N2 fixation
- c)They can perform oxygenic photosynthesis
- d)N2 fixation occurs in heterocyst
Correct answer is option 'B,C,D'. Can you explain this answer?
Which of the following statements is/are correct for cyanobacteria ?
a)
They can not grow in a mineral medium exposed to light and air
b)
Usually filamentous forms are involved in N2 fixation
c)
They can perform oxygenic photosynthesis
d)
N2 fixation occurs in heterocyst
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Sanaya Kulkarni answered • Oct 05, 2023 |
Cyanobacteria are a group of photosynthetic bacteria that are capable of oxygenic photosynthesis, which means they can produce oxygen as a byproduct of photosynthesis. They are commonly found in freshwater, marine, and terrestrial environments. Let's analyze the given statements regarding cyanobacteria.
b) Usually filamentous forms are involved in N2 fixation:
- Filamentous forms o... more
b) Usually filamentous forms are involved in N2 fixation:
- Filamentous forms o... more
Malachite green is used to stain- a)Capsule
- b)Endospore
- c)Flagella
- d)Acid-fast bacteria
Correct answer is option 'B'. Can you explain this answer?
Malachite green is used to stain
a)
Capsule
b)
Endospore
c)
Flagella
d)
Acid-fast bacteria
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Sanaya Kulkarni answered • Oct 05, 2023 |
Malachite green is a chemical dye that is commonly used in microbiology as a stain to detect specific structures or organisms in a sample. It is particularly useful in staining acid-fast bacteria.
Acid-fast bacteria are a group of bacteria that have a unique cell wall structure which makes them resistant to most traditional staining methods. The cell wall of acid-fast bacteria contains... more
Acid-fast bacteria are a group of bacteria that have a unique cell wall structure which makes them resistant to most traditional staining methods. The cell wall of acid-fast bacteria contains... more
The properties of an episome includes.- a)They can exist as an independent entity.
- b)They can exist after integration into the host chromosome
- c)They contain tra operon.
- d)They have no role in horizontal gene transfer
Correct answer is option 'A,B,C'. Can you explain this answer?
The properties of an episome includes.
a)
They can exist as an independent entity.
b)
They can exist after integration into the host chromosome
c)
They contain tra operon.
d)
They have no role in horizontal gene transfer
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Sanaya Kulkarni answered • Oct 05, 2023 |
Properties of an episome:
An episome is a genetic element that can exist either as an independent entity or after integration into the host chromosome. It possesses certain properties that distinguish it from other genetic elements. The properties of an episome include:
A. They can exist as an independent entity:
- Episomes have the ability to replicate aut... more
An episome is a genetic element that can exist either as an independent entity or after integration into the host chromosome. It possesses certain properties that distinguish it from other genetic elements. The properties of an episome include:
A. They can exist as an independent entity:
- Episomes have the ability to replicate aut... more
An experiment is started with 10 number of bacterial cells. After nth generation, the number of cells become 105 cells. The value of n is _________
Correct answer is between '13.26,13.30'. Can you explain this answer?
An experiment is started with 10 number of bacterial cells. After nth generation, the number of cells become 105 cells. The value of n is _________
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Sanaya Kulkarni answered • Oct 05, 2023 |
Given information:
- The experiment starts with 10 bacterial cells.
- After the nth generation, the number of cells becomes 105.
To find:
- The value of n (the number of generations).
Approach:
- We can use the exponential growth formula to solve this problem.
- The formula for exponential growth is given by: N = N0 * (1+r)^n, whe... more
- The experiment starts with 10 bacterial cells.
- After the nth generation, the number of cells becomes 105.
To find:
- The value of n (the number of generations).
Approach:
- We can use the exponential growth formula to solve this problem.
- The formula for exponential growth is given by: N = N0 * (1+r)^n, whe... more
Which amongst the following is an example of monotrichous bacteria?- a)Vibrio cholera
- b)S. aureus
- c)E.coli
- d)Salmonella typhi
Correct answer is option 'A'. Can you explain this answer?
Which amongst the following is an example of monotrichous bacteria?
a)
Vibrio cholera
b)
S. aureus
c)
E.coli
d)
Salmonella typhi
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Sanaya Kulkarni answered • Oct 05, 2023 |
Monotrichous bacteria refer to bacteria that have a single flagellum at one end of their cell. Among the given options, Vibrio cholerae is an example of monotrichous bacteria.
Vibrio cholerae is a gram-negative bacterium that causes the disease cholera. It has a comma-shaped or curved appearance and possesses a single polar flagellum at one end. The flagellum allows the bacterium to mov... more
Vibrio cholerae is a gram-negative bacterium that causes the disease cholera. It has a comma-shaped or curved appearance and possesses a single polar flagellum at one end. The flagellum allows the bacterium to mov... more
Choose the correct statement (s) regarding acid dyes- a)They have negatively charged groups and bind to positively charged cell structures.
- b)They have positively charged groups and bind to negatively charged cell structures.
- c)Eosin and rose bengal are the common examples.
- d)Methylene blue & crystal violet are the common examples.
Correct answer is option 'A,C'. Can you explain this answer?
Choose the correct statement (s) regarding acid dyes
a)
They have negatively charged groups and bind to positively charged cell structures.
b)
They have positively charged groups and bind to negatively charged cell structures.
c)
Eosin and rose bengal are the common examples.
d)
Methylene blue & crystal violet are the common examples.
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Sanaya Kulkarni answered • Oct 05, 2023 |
Is an example of an acid dye.
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Sanaya Kulkarni asked • Sep 29, 2023 |
Why is conductometric titration suitable for titrations of weak acids?- a)Weak acids have a high conductivity.
- b)Conductivity masks the weak acid's properties.
- c)Weak acids have a sharp conductivity change.
- d)Conductometric titration is not suitable for weak acids.
Correct answer is option 'C'. Can you explain this answer?
Why is conductometric titration suitable for titrations of weak acids?
a)
Weak acids have a high conductivity.
b)
Conductivity masks the weak acid's properties.
c)
Weak acids have a sharp conductivity change.
d)
Conductometric titration is not suitable for weak acids.
|
Vivek Khatri answered |
Conductometric titration is suitable for weak acids because they exhibit a sharp change in conductivity near the equivalence point. This sharp change allows for accurate and precise determination of the endpoint in the titration.
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Sanaya Kulkarni asked • Aug 17, 2023 |
Can I access the IIT JAM Chemistry answer key if I have not opted for the exam city change option?
|
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Shivani Mehta answered |
Can I access the IIT JAM Chemistry answer key if I have not opted for the exam city change option?
Yes, you can access the IIT JAM Chemistry answer key even if you have not opted for the exam city change option. The answer key is usually released by the conducting authority a few days after the examination. It contains the correct answers to all the questions asked in the exam an... more
Yes, you can access the IIT JAM Chemistry answer key even if you have not opted for the exam city change option. The answer key is usually released by the conducting authority a few days after the examination. It contains the correct answers to all the questions asked in the exam an... more
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Sanaya Kulkarni asked • Aug 17, 2023 |
Can you provide some tips to prepare for practical-based questions in IIT JAM Chemistry when I don't have access to a laboratory?
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Shivani Mehta answered |
Preparing for Practical-Based Questions in IIT JAM Chemistry without Access to a Laboratory
Introduction:
Practical-based questions in IIT JAM Chemistry require hands-on experience and laboratory skills. However, even without access to a laboratory, you can still prepare effectively by following certain strategies. Here are some tips to help you prepare for practical-... more
Introduction:
Practical-based questions in IIT JAM Chemistry require hands-on experience and laboratory skills. However, even without access to a laboratory, you can still prepare effectively by following certain strategies. Here are some tips to help you prepare for practical-... more
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Sanaya Kulkarni asked • Aug 14, 2023 |
Can the cutoff for IIT JAM Chemistry vary based on the number of seats available in each institute?
|
Sinjini Singh answered |
Can the cutoff for IIT JAM Chemistry vary based on the number of seats available in each institute?
Yes, the cutoff for IIT JAM Chemistry can vary based on the number of seats available in each institute. The cutoff is determined by various factors, including the number of applicants and the number of seats available in each institute. Here is a detailed explanation of how the cu... more
Yes, the cutoff for IIT JAM Chemistry can vary based on the number of seats available in each institute. The cutoff is determined by various factors, including the number of applicants and the number of seats available in each institute. Here is a detailed explanation of how the cu... more
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Sanaya Kulkarni asked • Aug 02, 2023 |
Is it necessary to solve previous years' question papers to qualify for IIT JAM Chemistry?
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Soumya Sharma answered |
Is it necessary to solve previous years' question papers to qualify for IIT JAM Chemistry?
Yes, it is highly recommended to solve previous years' question papers to qualify for IIT JAM Chemistry. Solving these papers not only helps you understand the exam pattern and marking scheme but also gives you an idea of the type of questions that can be asked in the actual exam. Here are ... more
Yes, it is highly recommended to solve previous years' question papers to qualify for IIT JAM Chemistry. Solving these papers not only helps you understand the exam pattern and marking scheme but also gives you an idea of the type of questions that can be asked in the actual exam. Here are ... more
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Sanaya Kulkarni asked • Dec 08, 2022 |
d-block elements generally show multiple oxidation states. An exception to this is:- a)Zinc
- b)Mercury
- c)Copper
- d)None of the mentioned
Correct answer is option 'A'. Can you explain this answer?
d-block elements generally show multiple oxidation states. An exception to this is:
a)
Zinc
b)
Mercury
c)
Copper
d)
None of the mentioned
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Kiran Pillai answered |
Introduction:
The d-block elements, also known as transition metals, are characterized by their ability to exhibit multiple oxidation states. This means that they can lose or gain different numbers of electrons, resulting in different charges on the ions they form. However, there are exceptions to this general trend, and one such exception is zinc (Zn).
Explanation:... more
The d-block elements, also known as transition metals, are characterized by their ability to exhibit multiple oxidation states. This means that they can lose or gain different numbers of electrons, resulting in different charges on the ions they form. However, there are exceptions to this general trend, and one such exception is zinc (Zn).
Explanation:
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Sanaya Kulkarni asked • Dec 05, 2022 |
Which of the following is not poisonous?- a)H2O
- b)H2S
- c)H2Se
- d)H2Te
Correct answer is option 'A'. Can you explain this answer?
Which of the following is not poisonous?
a)
H2O
b)
H2S
c)
H2Se
d)
H2Te
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Vivek Khatri answered |
The hydride of Oxygen, i.e., H2O is a colourless, odourless liquid while the hydrides of all the other group 16 elements are unpleasant, foul smelling, poisonous gases. H2O has the highest boiling point of 373 K amongst the hydrides of group 16 elements.
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