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Divyanshu SainiEduRev Chemistry |
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Divyanshu Saini
EduRev Chemistry
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Content, tests & courses saved by you for accessing later. (visible to you only)
Currently preparing for
 | Chemistry |
 | Class 11 |
 | IIT JAM |
| Class 12 |
Top Scoring Tests by Divyanshu
Test: Gaseous State - 1 | 37/40 |
Test: Adsorption - 1 | 32/40 |
Test: Mole Concept, Volumetric & Redox - 1 | 31/40 |
Test: The Gas Laws (Old NCERT) | 46/60 |
Test: Adsorption (Old NCERT) | 27/40 |
Test: Gaseous State - 2 | 40/60 |
RC Mukherjee Test: Mole Concept | 37/56 |
Test: Colligative Properties - 1 | 26/40 |
Test: Intermolecular Forces (Old NCERT) | 33/52 |
Test: Chemical Equilibrium - 2 | 31/50 |
Rated 5 
by Divyanshu
by Divyanshu | Introduction to Thermochemistry & Second Law of Thermodynamics Doc | 4 pages |  |
 | Van Der Waal’s Equation & its Applicability Doc | 8 pages | |
 | Ideal Gas & Kinetic Theory of Gases Doc | 11 pages | |
 | Ideal Gas Laws - Gaseous Video | 05:11 min | |
 | Colligative Properties of a Solution Doc | 11 pages | |
 | Colligative Properties Video | 17:44 min | |
 | Alkali Metal Trends (Part- 1) Video | 14:57 min | |
 | Some General Properties of Group 1 Elements- The s-Block Elements Video | 04:20 min | |
 | Fun Video: Amorphous & Crystalline Solids with Classifications Video | 09:18 min | |
 | Balancing Redox equations using Oxidation Number Method - Redox Reactions, Physical Chemistry Video | 11:17 min | |
 | Precipitation Titration - Redox Reactions, Physical Chemistry Video | 10:37 min | |
| Volumetric Analysis - Redox Reactions Doc | 13 pages | |
Discussed Questions
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Divyanshu Saini upvoted • Jan 01, 2019 |
The ionic conductivities at infinite dilution of Ox2–, K+ and Na+ are 148.2, 50.1 and 73.5 Ω-1 cm2 mol-1 respectively. The equivalent conductivities at infinite dilution of the salt KOOC. COONa is _______ Ω-1 cm2 mol-1
Correct answer is between '135,137'. Can you explain this answer?
The ionic conductivities at infinite dilution of Ox2–, K+ and Na+ are 148.2, 50.1 and 73.5 Ω-1 cm2 mol-1 respectively. The equivalent conductivities at infinite dilution of the salt KOOC. COONa is _______ Ω-1 cm2 mol-1
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Ishani Dasgupta answered |
= 50.1 + 148.2 + 73.5 = 271.8Ω-1cm 2 mol-1
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Divyanshu Saini asked • Dec 27, 2018 |
The ionic conductivities at infinite dilution of Ox2–, K+ and Na+ are 148.2, 50.1 and 73.5 Ω-1 cm2 mol-1 respectively. The equivalent conductivities at infinite dilution of the salt KOOC. COONa is _______ Ω-1 cm2 mol-1
Correct answer is between '135,137'. Can you explain this answer?
The ionic conductivities at infinite dilution of Ox2–, K+ and Na+ are 148.2, 50.1 and 73.5 Ω-1 cm2 mol-1 respectively. The equivalent conductivities at infinite dilution of the salt KOOC. COONa is _______ Ω-1 cm2 mol-1
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Ishani Dasgupta answered |
= 50.1 + 148.2 + 73.5 = 271.8Ω-1cm 2 mol-1
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Divyanshu Saini asked • Dec 27, 2018 |
Which of the following expressions are correct:- a)
- b)
- c)
- d)
Correct answer is option 'B,C,D'. Can you explain this answer?
Which of the following expressions are correct:
a)
b)
c)
d)
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Vignesh Chem answered |
Option a is wrong , because dissociation of Al2( SO4)3 is
3 Al3+ and 3 SO4 2-
3 Al3+ and 3 SO4 2-
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Divyanshu Saini asked • Dec 27, 2018 |
Which of the following are correct:- a)Conductivity of a solution increases with dilution
- b)Molar conductivity of a solution increases with dilution
- c)Conductivity of a solution decreases with dilution
- d)Molar conductivity of a solution decreases with dilution
Correct answer is option 'B,C'. Can you explain this answer?
Which of the following are correct:
a)
Conductivity of a solution increases with dilution
b)
Molar conductivity of a solution increases with dilution
c)
Conductivity of a solution decreases with dilution
d)
Molar conductivity of a solution decreases with dilution
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Isha Bose answered |
**Conductivity and Molar Conductivity**
Conductivity is a measure of a solution's ability to conduct electricity. It depends on the concentration of ions present in the solution. Molar conductivity, on the other hand, is a measure of the conductivity of a solution per unit concentration of solute. It is calculated by dividing the conductivity of the solution by its molar concentration.<... more
Conductivity is a measure of a solution's ability to conduct electricity. It depends on the concentration of ions present in the solution. Molar conductivity, on the other hand, is a measure of the conductivity of a solution per unit concentration of solute. It is calculated by dividing the conductivity of the solution by its molar concentration.<... more
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Divyanshu Saini asked • Dec 22, 2018 |
Two closed bulbs of equal volume (V) containing an ideal gas initially at pressure pi and temperature T1 are connected through a narrow tube of negligible volume as shown in the figure below. The temperature of one of the bulb is then raised to T2. The final pressure pf is:
- a)
- b)
- c)
- d)
Correct answer is option 'B'. Can you explain this answer?
Two closed bulbs of equal volume (V) containing an ideal gas initially at pressure pi and temperature T1 are connected through a narrow tube of negligible volume as shown in the figure below. The temperature of one of the bulb is then raised to T2. The final pressure pf is:
a)
b)
c)
d)
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Swara Dasgupta answered |
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Divyanshu Saini asked • Dec 22, 2018 |
The state of a certain amount of a gas, not necessarily ideal, is changed from A to B in various hypothetical paths, as shown below. The total amount of the gas remains constant. Which of the following paths are physically realizable:
- a)All of them
- b)Only I, II and III
- c)Only III and V
- d)Only I and III
Correct answer is option 'A'. Can you explain this answer?
The state of a certain amount of a gas, not necessarily ideal, is changed from A to B in various hypothetical paths, as shown below. The total amount of the gas remains constant. Which of the following paths are physically realizable:
a)
All of them
b)
Only I, II and III
c)
Only III and V
d)
Only I and III
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Chirag Verma answered |
A is correct. All of them are possible.
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Divyanshu Saini upvoted • Dec 22, 2018 |
The Maxwell-Boltzmann distribution for molecular speeds is shown in the following figure
In the figure, H is the height of the peak, L is the location of the maximum and W is the width at half height. As the temperature is decreased:- a)H increase, L decreases and W increases
- b)H increase, L decreases and W decreases
- c)H decrease, L increases and W increases
- d)H decrease, L decreases and W decreases
Correct answer is option 'D'. Can you explain this answer?
The Maxwell-Boltzmann distribution for molecular speeds is shown in the following figure
In the figure, H is the height of the peak, L is the location of the maximum and W is the width at half height. As the temperature is decreased:
a)
H increase, L decreases and W increases
b)
H increase, L decreases and W decreases
c)
H decrease, L increases and W increases
d)
H decrease, L decreases and W decreases
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Vipin Singh answered |
Correct ans is B part . H should increases on decreasing temp.
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Divyanshu Saini upvoted • Dec 22, 2018 |
Consider gases confined by a liquid, as shown in figure.
Density of the liquid = d (all values in SI unit)
Then ... more
Consider gases confined by a liquid, as shown in figure.
Density of the liquid = d (all values in SI unit)
Density of the liquid = d (all values in SI unit)
Then
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Shreya Narayan answered |
In this setup
The liquid in tube 1 has got lowered by height h1 which means that the pressure inside the tube is greater than the pressure exerted by the atmosphere. This excess pressure must be equal to the pressure exerted by h1 column of liquid of the same cross section ,therefore
Pressure inside tube 1=atmospheric pressure+h1dg
In tube 2 since the level of water is same as that... more
The liquid in tube 1 has got lowered by height h1 which means that the pressure inside the tube is greater than the pressure exerted by the atmosphere. This excess pressure must be equal to the pressure exerted by h1 column of liquid of the same cross section ,therefore
Pressure inside tube 1=atmospheric pressure+h1dg
In tube 2 since the level of water is same as that... more
For Charles’ law, graphical representation between log V and log T under isobaric condition is shown below for equation V = kT
Q. Volume V = constant k, when- a)T = 0oc
- b)T = 273oc
- c)T = 0K
- d)T = -272oc
Correct answer is option 'D'. Can you explain this answer?
For Charles’ law, graphical representation between log V and log T under isobaric condition is shown below for equation V = kT
Q. Volume V = constant k, when
a)
T = 0oc
b)
T = 273oc
c)
T = 0K
d)
T = -272oc
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Divyanshu Saini answered • Dec 22, 2018 |
-272deg. C = 1 K
At 1 k :::
V / T = K
V / 1 = K
V = K
Hence D is the correct Answer.
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Divyanshu Saini upvoted • Dec 21, 2018 |
One mole of N2O4 is kept in a close container at 300K and 1 atm pressure. When it is heated to 600 K 20% of it decomposes to NO2 (g). Calculate the resultant pressure exerted on the walls of the container- a)3.4 atm
- b)1.2 atm
- c)2.0 atm
- d)3.6 atm
Correct answer is option 'B'. Can you explain this answer?
One mole of N2O4 is kept in a close container at 300K and 1 atm pressure. When it is heated to 600 K 20% of it decomposes to NO2 (g). Calculate the resultant pressure exerted on the walls of the container
a)
3.4 atm
b)
1.2 atm
c)
2.0 atm
d)
3.6 atm
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Preeti Iyer answered |
The answer is 2.4 atm
N2O4 ⇔ 2NO2
1mole 0 Initial moles
-20% of 1=0.2 +2(20% of 1)=0.40 At equilibrium
1-0.2= 0.8 0.4 Moles at equilibrium
Total moles at equilibrium = 0.8+0.4 = 1.2 moles
1 mole vapour pressure = 1 atm at 300 K
Applying PV = nRT
1xV = 1x R x 300 .... (1)
When n=1.2 moles, T = 600 K
P x V = 1.2 x R x 600 .... (2)
Dividing (2) by (1),
PxV/(1xV) = (1.2 x R x 600)/ (1 x R x 300)
Therefore, P= 2.4 atm
Hence, resultant pressure of mixture is 2.4 atm
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Divyanshu Saini asked • Dec 21, 2018 |
The number of peaks or signals in 1H NMR of N, N-dimethylformamide (DMF) at 25ºC is ______
Correct answer is '3'. Can you explain this answer?
The number of peaks or signals in 1H NMR of N, N-dimethylformamide (DMF) at 25ºC is ______
|
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Ameya Reddy answered |
Distinguishable hydrogen are indicated by a and b here. at 25ºC two signals.
Hence, correct answer is 3.
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Divyanshu Saini upvoted • Dec 21, 2018 |
The matrix which transforms 
- a)(-1-1)
- b)
- c)
- d)
Correct answer is option 'D'. Can you explain this answer?
The matrix which transforms
a)
(-1-1)
b)
c)
d)
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Komal Birdi answered |
A very diluted saturated solution of a sparingly soluble salt X3Y4 has a vapour pressure of 20 mm Hg at temperature T, while pure water exerts a pressure of 20.0126 mm Hg at the same temperature. Calculate molality (m) at temperature T:- a)6.3 ×10-4
- b)3.5 ×10-2
- c)5 ×10-3
- d)None of these.
Correct answer is option 'C'. Can you explain this answer?
A very diluted saturated solution of a sparingly soluble salt X3Y4 has a vapour pressure of 20 mm Hg at temperature T, while pure water exerts a pressure of 20.0126 mm Hg at the same temperature. Calculate molality (m) at temperature T:
a)
6.3 ×10-4
b)
3.5 ×10-2
c)
5 ×10-3
d)
None of these.
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Divyanshu Saini answered • Dec 20, 2018 |
Correct Ans Is B not C
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Divyanshu Saini
asked a question
|
Total vapour pressure of mixture of 1 mole of volatile component 
and 3 mole of volatile component B 
is 90 mm Hg. For such case:- a)There is positive deviation from Raoult’s law.
- b)Boiling point has been lowered.
- c)Force of attraction between A and B is smaller than that between A and A or between B and B.
- d)All the above statements are correct.
Correct answer is option 'D'. Can you explain this answer?
Total vapour pressure of mixture of 1 mole of volatile component and 3 mole of volatile component B is 90 mm Hg. For such case:
and 3 mole of volatile component B is 90 mm Hg. For such case:a)
There is positive deviation from Raoult’s law.
b)
Boiling point has been lowered.
c)
Force of attraction between A and B is smaller than that between A and A or between B and B.
d)
All the above statements are correct.
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Divyanshu Saini asked • Dec 19, 2018 |
An azeotropic mixture of two liquids has a boiling point higher than either of them when it:- a)Shows positive deviation from Raoult’s law.
- b)Shows negative deviation from Raoult’s law.
- c)Shows ideal behaviour.
- d)Is saturated.
Correct answer is option 'B'. Can you explain this answer?
An azeotropic mixture of two liquids has a boiling point higher than either of them when it:
a)
Shows positive deviation from Raoult’s law.
b)
Shows negative deviation from Raoult’s law.
c)
Shows ideal behaviour.
d)
Is saturated.
|
Rajeev Sharma answered |
Azeotropic mixture of two liquids has lower B.P. if two liquids are dissolved and their boiling points will be different and they will increase either when there is one liquid the boiling point will be low.
So Option B is correct.
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Divyanshu Saini asked • Dec 19, 2018 |
If two liquids A 
and B 
are completely immiscible wit h each other (each one will behave independently of the other) are present in a closed vessel. The total vapour pressure of the system will be:- a)Less than 100 torr.
- b)Greater than 200 torr.
- c)Between 100 to 200 torr.
- d)300 torr.
Correct answer is option 'D'. Can you explain this answer?
If two liquids A and B are completely immiscible wit h each other (each one will behave independently of the other) are present in a closed vessel. The total vapour pressure of the system will be:
and B are completely immiscible wit h each other (each one will behave independently of the other) are present in a closed vessel. The total vapour pressure of the system will be:a)
Less than 100 torr.
b)
Greater than 200 torr.
c)
Between 100 to 200 torr.
d)
300 torr.
|
Aditya Deshmukh answered |
According to the Dalton's law, the total pressure of the system is the sum of the partial pressures of the two immiscible liquid.
Therefore,
Total pressure of the system=Partial pressure of A+Partial pressure of B
=125+275=300 torr
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Divyanshu Saini asked • Dec 19, 2018 |
When a liquid that is immiscible with water was steam distilled at 95.2°C at a total pressure of 748 torr, the distillate contained 1.25 g of the liquid per gram of water. The vapour pressure of water is 648 torr at 95.2°C, what is the molar mass of liquid?- a)7.975 g/mol.
- b)166 g/mol.
- c)145.8 g/mol.
- d)None of these.
Correct answer is option 'C'. Can you explain this answer?
When a liquid that is immiscible with water was steam distilled at 95.2°C at a total pressure of 748 torr, the distillate contained 1.25 g of the liquid per gram of water. The vapour pressure of water is 648 torr at 95.2°C, what is the molar mass of liquid?
a)
7.975 g/mol.
b)
166 g/mol.
c)
145.8 g/mol.
d)
None of these.
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Neha Basak answered |
In the above equation if moles required of S2O32– to titrate I2 was 2 then what were the moles of IO3– used:IO3– + I– + H+ → I2 + H2O, I2 + S2O32– → I– + S4O62–- a)0.5
- b)1.0
- c)0.1
- d)0.33
Correct answer is option 'D'. Can you explain this answer?
In the above equation if moles required of S2O32– to titrate I2 was 2 then what were the moles of IO3– used:
IO3– + I– + H+ → I2 + H2O, I2 + S2O32– → I– + S4O62–
a)
0.5
b)
1.0
c)
0.1
d)
0.33
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Divyanshu Saini answered • Dec 17, 2018 |
B is the correct answer.
Number of electrophiles in following:
Correct answer is '5'. Can you explain this answer?
Number of electrophiles in following:
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Divyanshu Saini answered • Dec 16, 2018 |
BF3, CH3- ,I+, PCl5 , SnCl4
For the gaseous reaction, the rate is often expressed in terms of dp/dt instead of dC/dt or dn/dt. What is the relationship among these three expression:- a)
- b)
- c)
- d)None of the above is correct
Correct answer is option 'C'. Can you explain this answer?
For the gaseous reaction, the rate is often expressed in terms of dp/dt instead of dC/dt or dn/dt. What is the relationship among these three expression:
a)
b)
c)
d)
None of the above is correct
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Divyanshu Saini answered • Dec 16, 2018 |
I think "A" is the correct answer.
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