Physics-
General
Easy
Question
Figure shows four P
V diagrams which of these curves represent. isothermal and adiabatic processes?
- A and C
- A and B
- C and D
- B and D
The correct answer is: C and D
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physics-
A thermodynamic system goes from States
(i) 
to 2P,V
(ii) 
to P,2 V. Then what is work done in the two Cases.
A thermodynamic system goes from States
(i) to 2P,V
(ii) to P,2 V. Then what is work done in the two Cases.
physics-General
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When a System is taken from State I to State falling the path if, it is found that Q=70 cal and w =30 cal, along the path ibf Q=52c al. W atoug the path if is
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If 
and 
, then 
If and , then
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If 
then 
If then
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If 
, then 
If , then
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Wafer of volume 2 filter in a container is heated with a coil of 1kw at 27°C. The lid of the containes is open and energy dissipates at the late of 
. In how much time temperature will rise from to 27°C 77°C. Specific heat of wafers is 
Wafer of volume 2 filter in a container is heated with a coil of 1kw at 27°C. The lid of the containes is open and energy dissipates at the late of . In how much time temperature will rise from to 27°C 77°C. Specific heat of wafers is
physics-General
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Starting with the same initial Conditions, an ideal gas expands from Volume 
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if the process is purely isothermal, 
if purely isobasic and 
if purely adiabatic Then
Starting with the same initial Conditions, an ideal gas expands from Volume to in three different ways. The Work done by the gas is if the process is purely isothermal, if purely isobasic and if purely adiabatic Then
physics-General
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A given mass of a gas expands from state A to B by three different paths 1,2 and 3 as shown in the figure. If 
and respectively be the work done by the gas along the three paths, then
A given mass of a gas expands from state A to B by three different paths 1,2 and 3 as shown in the figure. If and respectively be the work done by the gas along the three paths, then
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The enthalpy change at 298K in successive breaking of O–H bonds of water are H2O→H(g)+OH(g);ΔH=498KJmol–1 OH(g)→H(g)+O(g);ΔH=428KJmol–1 the bond enthalpy of O–H bond is-
The enthalpy change at 298K in successive breaking of O–H bonds of water are H2O→H(g)+OH(g);ΔH=498KJmol–1 OH(g)→H(g)+O(g);ΔH=428KJmol–1 the bond enthalpy of O–H bond is-
chemistry-General
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The enthalpy change for the reaction H2(g)+C2H4(g)→C2H6(g)is........The bond energies are,H–H=103,C–H=99,C–C=80&C=C=145Kcalmol–1
The enthalpy change for the reaction H2(g)+C2H4(g)→C2H6(g)is........The bond energies are,H–H=103,C–H=99,C–C=80&C=C=145Kcalmol–1
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Heat of neutralisation of oxalic acid is–106.7KJ mol–1using NaOH hence ΔH of-H2C2O4→C2O2–+2H+is
Heat of neutralisation of oxalic acid is–106.7KJ mol–1using NaOH hence ΔH of-H2C2O4→C2O2–+2H+is
chemistry-General
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The change in the enthalpy of NaOH+HCl→NaCl+HO is called:
The change in the enthalpy of NaOH+HCl→NaCl+HO is called:
chemistry-General
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Equal volumes of 1M HCl and 1M H2SO4 are neutralised by dilute NaOH solution and x and y K cals of heat are liberated respectively .Which of the following is true-
Equal volumes of 1M HCl and 1M H2SO4 are neutralised by dilute NaOH solution and x and y K cals of heat are liberated respectively .Which of the following is true-
chemistry-General
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The temperature of a 5 ml of strong acid increases by 5°C when 5ml of a strong base is added to it.If 10ml of each are mixed temperature should increase by-
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If H++OH–=H2O+13.7Kcal,then heat of complete neutralisation of one gram mole of H2SO4 with strong base will be-
If H++OH–=H2O+13.7Kcal,then heat of complete neutralisation of one gram mole of H2SO4 with strong base will be-
chemistry-General
