Email
Chat with tutors
Login
Ask Questions, Get Answers
Menu
X
home
ask
tuition
questions
practice
papers
mobile
tutors
pricing
X
Questions asked by mosymeow_1
Questions
355
questions
0
answers selected
Which of the following correctly denotes the catalyst and promoter used in Haber's process for manufacture of ammonia, respectively?
jeemain
chemistry
surface-chemistry
ch5
sec-a
medium
asked
Apr 4, 2014
1
answer
Which of the following properties are of lyophilic colloids?
jeemain
chemistry
surface-chemistry
medium
asked
Apr 4, 2014
1
answer
Micelles are what type of colloids?
jeemain
chemistry
surface-chemistry
medium
asked
Apr 4, 2014
1
answer
Which type of colloids mentioned below has both lyophilic and lyophobic groups of molecules?
jeemain
chemistry
surface-chemistry
sec-a
asked
Apr 4, 2014
2
answers
Which of the following are not the properties of colloidal solution?
jeemain
chemistry
surface-chemistry
medium
asked
Apr 4, 2014
1
answer
Which of the following reactions shows the formation of positively / negatively charged sol correctly?
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 18, 2014
1
answer
Which of the following diagram shows the situation of the $As_2S_3$ particles after electrophoresis?
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 18, 2014
1
answer
Which of the following explains the process of de-emulsification?
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 18, 2014
1
answer
Which among the following is a non-elastic gel?
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 18, 2014
1
answer
Which of the following below is used as an eye lotion?
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 18, 2014
1
answer
Fertile soils are also colloidal in nature. Which of the following acts as a protective colloid in soil?
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 18, 2014
1
answer
Which of the following states the reason behind the formation of 'Tail of Comets' phenomenon in a colloidal solution?
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 17, 2014
2
answers
The coagulating power of an electrolyte for arsenious sulphide sol decreases in the order:
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 17, 2014
1
answer
STEM stands for
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 17, 2014
1
answer
The colour of a colloidal solution depends upon
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 17, 2014
2
answers
A colloidal solution of gold in water is
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 17, 2014
1
answer
The average particle mass in colloidal solutions can be determined by
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 17, 2014
1
answer
The CMC of a given soap in water is $10^{-3}$ mol/L. A $10^{-4}$ mol/L solution of this soap in water is a
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 17, 2014
1
answer
Gold numbers of protective colloids A, B, C and D are 0.50, 0.01, 0.05 and 0.005 respectively. The correct order of their protective powers is
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 17, 2014
1
answer
Langmuir adsorption isotherm is deduced using the assumption.
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 17, 2014
1
answer
The reactions given below, are the catalyst and corresponding process / reaction are matched, the mismatch is
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 17, 2014
1
answer
A plot of $\log \;\dfrac{x}{m}$ versus $\log\; p$ for the adsorption of a gas on a solid gives a straight line with slope equal to
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 17, 2014
1
answer
The number of moles of lead nitrate needed to coagulate 2 mol of colloidal $[AgI]I^-$ is
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 17, 2014
1
answer
Which among the following statements are correct with respect to adsorption of gases on a solid?
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 17, 2014
1
answer
The coagulation of 200 mL of a positive colloid took place when 0.73 g HCl was added to it without changing the volume much. The flocculation value of HCl for the colloid is
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 17, 2014
1
answer
What is the equation form of langmuir isotherm under high pressure?
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 17, 2014
1
answer
Which of the following is used to produce smoke screens?
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 17, 2014
1
answer
Which of the following molecule is most suitable to disperse benzene in water?
surface-chemistry
jeemain
chemistry
class12
unit5
medium
asked
Mar 16, 2014
1
answer
Which of the following forms micelles in aqueous solution, above certain concentration?
jeemain
chemistry
class12
unit5
surface-chemistry
medium
asked
Mar 16, 2014
1
answer
The volume of a colloidal particle, $V_c$ as compared to the volume of a solute particle, $V_s$ in a true solution could be
jeemain
chemistry
class12
unit5
surface-chemistry
medium
asked
Mar 16, 2014
1
answer
In Zeigler-Natta polymerisation of ethylene the active species is
jeemain
chemistry
class12
unit5
surface-chemistry
medium
asked
Mar 16, 2014
1
answer
Milk can be preserved by adding a few drops of
jeemain
chemistry
class12
unit5
surface-chemistry
medium
asked
Mar 16, 2014
1
answer
The enthalpy of sublimation of iodine is 62.8 kJ/mol. The bond dissociation energies for $Cl_2, I_2$ and ICl are 242.3, 151.0 and 211.3 kJ/mol, respectively. The standard enthalpy of formation of ICl(g) is nearly equal to
jeemain
chemistry
class11
unit6
chemical-thermodynamics
difficult
asked
Mar 1, 2014
1
answer
The following equation shows the conversion of limes stone to lime $CaCO_3(s)\longrightarrow CaO(s) + CO_2(g)$. The values of $\Delta H^\circ$ and $\Delta S^\circ$ are $+179.1\; kJ$ and $160.2\; J/K$ respectively at $298\; K$ and $1\; bar$. Assuming that $\Delta H^\circ$ and $\Delta S^\circ$ do not change with temperature, minimum temperature above which conversion of lime stone to lime will be spontaneous is
jeemain
chemistry
class11
unit6
chemical-thermodynamics
medium
mock
asked
Feb 28, 2014
1
answer
Conversion of A to B is carried out by the following process: $\Delta S(A\rightarrow C)=50eV, \Delta S(C\rightarrow B)=30eV, \Delta S(B\rightarrow D) = 20 eV$, where eV, where eV, is entropy unit, then $\Delta S(A\rightarrow B)$ is
jeemain
chemistry
class11
unit6
chemical-thermodynamics
medium
asked
Feb 28, 2014
1
answer
The enthalpy of hydrogenation of cyclohexene is -119.5 kj/mol. What is the enthalpy of benzene, if its resonance energy is -150.4 kJ/mol?
jeemain
chemistry
class11
unit6
chemical-thermodynamics
difficult
asked
Feb 28, 2014
1
answer
For the formation of carbon monoxide (CO) from the elements at 298 K $(\Delta H - \Delta U)$ is (R=8.314 $JK^{-1}mol^{-1}$)
sat
chemistry
chemical-reactions-and-thermochemistry
jeemain
class11
unit6
chemical-thermodynamics
medium
asked
Feb 28, 2014
1
answer
Given, standard enthalpy of formation $(\Delta _f H^\circ)$ at 298 k for methane is -74.8 kJ/mol. What other information is required to determine the average energy for C-H bond formation would be
jeemain
chemistry
class11
unit6
chemical-thermodynamics
medium
asked
Feb 28, 2014
1
answer
One mole of monoatomic ideal gas at T (K) is expanded from 1 L to 2 L adiabitcally under constant external pressure of 1 atm. The final temperature of gas in kelvin is
jeemain
chemistry
class11
unit6
chemical-thermodynamics
difficult
asked
Feb 28, 2014
1
answer
The enthalpy of vaporisation of a liquid is 30 kJ/mol and entropy of vaporisation is 75 $Jmol^{-1}K^{-1}$. What is the boiling point of the liquid at 1 atm?
jeemain
chemistry
class11
unit6
chemical-thermodynamics
difficult
asked
Feb 28, 2014
1
answer
Which of the following reactions will define $\Delta H^\circ _f$?
jeemain
chemistry
class11
unit6
chemical-thermodynamics
medium
asked
Feb 28, 2014
1
answer
The enthalpy of combustion of cyclohexane, cyclohexene and $H_2$ are respectively -3920, -3800 and -241 kJ/mol. The heat of hydrogenation of cyclohexane is
jeemain
chemistry
class11
unit6
chemical-thermodynamics
difficult
asked
Feb 28, 2014
1
answer
Given a mole of a non-ideal gas which undergoes a change of state (2.0 atm, 3.0 L 95 K) $\rightarrow$ (4.0 atm, 5.0 L, 245 K) with a change in internalenergy, $\Delta U$ = 30.0 L atm. What will be the change in enthalpy ($\Delta H$) of the process in L atm?
jeemain
chemistry
class11
unit6
chemical-thermodynamics
medium
asked
Feb 28, 2014
1
answer
At $27^\circ C$ the enthalpy change for the transition of liquid water to steam is 30 kJ/mol. What would be the entropy change for the process?
jeemain
chemistry
class11
unit6
chemical-thermodynamics
easy
asked
Feb 28, 2014
1
answer
Which of the following gas has the highest heat of combustion?
sat
chemistry
chemical-reactions-and-thermochemistry
jeemain
class11
unit6
chemical-thermodynamics
easy
asked
Feb 28, 2014
1
answer
In a flask colourless $N_2O_4$ is in equilibrium with brown coloured $NO_2$. At equilibrium when the flask is heated at $100^\circ C$, the brown colour deepens and on cooling it becomes less coloured. The changed in enthalpy, $\Delta H$ for this system is
jeemain
chemistry
class11
unit6
chemical-thermodynamics
easy
asked
Feb 28, 2014
1
answer
For the decomposition of $Ag_2O$ at 298 K. $Ag_2O (s) \longrightarrow 2Ag(s) + \frac{1}{2} O_2(g) \Delta G^\circ$ = 11.21 kJ which of the following statement is true?
jeemain
chemistry
class11
unit6
thermodynamics
medium
asked
Feb 28, 2014
1
answer
If $\Delta H^\circ _f$ and $\Delta G ^\circ _f$ of $CH_3OH(g)$ at 298 K is -200.7 kJ/mol and -162 kJ/mol respectively, then absolute entropy of $CH_3OH(g)$ at 298 K is (given absolute entropies of C(s), $H_2(g)$ and $O_2(g)$ at 298 K are 5.7, 130.60 and 205.00 J/mol respectively).
jeemain
chemistry
class11
unit6
chemical-thermodynamics
difficult
asked
Feb 28, 2014
1
answer
Devitrification of glass is a process for which change in entropy, $\Delta S$ is
jeemain
chemistry
class11
unit6
chemical-thermodynamics
medium
asked
Feb 28, 2014
1
answer
Dissolution of gases in water is
sat
chemistry
chemical-reactions-and-thermochemistry
jeemain
class11
unit6
chemical-thermodynamics
medium
asked
Feb 28, 2014
2
answers
Page:
1
2
3
4
...
8
next »
Home
Ask
Tuition
Questions
Practice
Your payment for
is successful.
Continue
...