System, Surroundings, Intensive, Extensive Properties

Q.

600 ml of a mixture of O3 and O2 weighs 1g at NTP. Calculate the volume of ozone in the mixture

Q. Which of the following is/are intensive property/properties?

1. Temperature
2. Viscosity
3. Density
4. All of the above

Q. The conductivity of a saturated solution of CsI3 is 3.06 x 10-2 ohm m-1 and its molar conductance is 1.53 ohm-1 m2 mol-1. The Ksp of Csl3 will be

Q. Two flasks $I$ and $II$ shown below are connected by a valve of negligible volume.


When the valve is openend, the final pressure of the system in bar is $x\times {10}^{-2}$. The value of $x$ is _____.
(Integer answer)
[Assume - ideal gas: $1bar={10}^{5}Pa.$
Molar mass of $N_2=28.0gmo{l}^{-1}$ $R=8.31Jmo{l}^{-1}{K}^{-1}$

Q. Total number of degrees of freedom of a rigid diatomic molecule is:

1. 3
2. 7
3. 5
4. 2

Q. The osmotic pressure of a solution (density is $1gm{L}^{-1}$) containing 3 g of glucose (molecular weight = 180) in 60 g of water at ${15}^{\circ }C$ is

1. 0.34 atm
2. 0.65 atm
3. 6.25 atm
4. 5.57 atm

Q. Among the following, the intensive property is/are:

1. Molar conductivity
2. Electromotive force
3. Resistance
4. Heat capacity

Q. In a closed insulated container a liquid is stirred with a paddle to increase the temperature, which of the following is true?

1. $\Delta E=W\ne 0,q=0$
2. $\Delta E=W=q\ne 0$
3. $\Delta E=0,W=q\ne 0$
4. $W=0,\Delta E=q\ne 0$

Q.

Give an example of an isolated system.

Q.

Which of the following is not a transmission medium?

1. Telephone lines

2. Coaxial cable

3. Modem

4. Microwave systems

5. Satellite systems

Q. Which among the following is a state function?

1. Internal energy
2. Irreversible expansion work
3. Irreversible compression work
4. Heat

Q. If the electrical resistance of a column of 0.1 mol L NaOH solution diamete 1cm length 10cm is 5 ×103 ohm what would be the molar conductivity of the solution

Q.

A system which exchanges only energy but not matter with the surroundings is called as a closed system.

1. False

2. True

Q. Which of the following is an example of an open system?

1. human body
2. All of the above.
3. the earth
4. pond

Q. A well stoppered thermoflask contains some ice cubes. This is an example of a/an:

1. Closed system
2. Open system
3. Non-thermodynamic system
4. Isolated system

Q. 11. what are the symbols and formulae for : 1. molar conductance 2. specific conductance 3. equivalent conductance 4. electrical conductance

Q. The average concentration of SO2 in the atmosphere over a city on a certain day is 10 ppm. when the average temperature is 298 K. Given that the solubility of SO2 in water at 298 K is 1.3653 moles litre–1 and the pKa of H2SO3 is 1.92, estimate the pH of rain on that day.

Q.

Which of the following statement is correct?
(a) The presence of reacting species in a covered beaker is an example of open system.
(b) There is an exchange of energy as well as matter between the system and the surroundings in a closed system.
(c) The presence of reactants in a closed vessel made up of copper is an example of a closed system.
(d) The presence of reactants in a thermos flask or any other closed insulated vessel is an example of a closed system.

Q. Which of the following is true for a closed system?

1. Mass does not enter or leave the system
2. Mass entering can be more or less than the mass leaving
3. None of the above
4. Mass entering = Mass leaving

Q.

Identify the intensive quantities from the following.

1. Enthalpy

2. Temperature

3. Volume

4. Refractive Index

Q. The specific conductance of a saturated solution of silver chloride at ${25}^{o}C$ after subtracting the specific conductance of water is $2.28\times {10}^{-4}S{m}^{-1}$. Calculate the solubility of silver chloride in grams per $d{m}^3$ at this temperature.

${\Lambda }_m^0\left(AgCl\right)=138.3\times {10}^{-4}S{m}^{2}mo{l}^{-1}$
$M\left(AgCl\right)=143.5gmo{l}^{-1}$

1. $2.36\times {10}^{-3}g{L}^{-1}$
2. $7.52\times {10}^{-3}g{L}^{-1}$
3. $9.88\times {10}^{-3}g{L}^{-1}$
4. $5.65\times {10}^{-3}g{L}^{-1}$

Q. An open vessel at 27°C is heated until two fifth of the air (assumed as an ideal gas) in it has escaped from the vessel. Assuming that the volume of the vessel remains constant, the temperature at which the vessel has been heated is:

1. 750°C
2. 500°C
3. 750 K
4. 500 K

Q. Thermodynamics is not concerned with:

1. Energy changes involved in a chemical reaction.
2. The rate at which a reaction proceeds.
3. The feasibility of a chemical reaction.
4. The extent to which a chemical reaction proceeds.

Q. Two closed bulbs of equal volume $\left(V\right)$ containing an ideal gas initially at pressure $P_i$ and temperature $T_1$ are connected through a narrow tube of negligible volume as shown in the figure below. The temperature of one of the bulbs is then raised to $T_2$. The final pressure $p_f$ is :

1. $P_i\left(\frac{T_1{T}_2}{T_1+T_2}\right)$
2. $2P_i\left(\frac{T_1}{T_1+T_2}\right)$
3. $2P_i\left(\frac{T_1{T}_2}{T_1+T_2}\right)$
4. $2P_i\left(\frac{T_2}{T_1+T_2}\right)$

Q. Which of the following is incorrect regarding galvanic cell representation?

1. Single vertical line indicates the phase boundary
2. In gas electrode, gas is indicated before electrode for cathode
3. Cell representation of cathode $H_2$ electrode is
   $Pt\left(s\right)|H_2\left(g\right)|H^{+}\left(aq\right)$
4. Pressure of gas is indicated in bracket after the substance

Q. Each of the following has non-zero dipole moment, except:

1. Benzene
2. Carbon monoxide
3. Ammonia
4. Sulphur dioxide

Q. What is reaction quotient?

Q. The conductance of 0.01N Ch3cooh solution is 4.5/10000 ohm which is present in a tube having length 6 cm and cross section area 36cm20.the molar Conductivity of the solution is

Q. Out of boiling point (I), entropy (II), pH (III) and e.m.f. of a cell (IV), intensive properties are:

1. I, II
2. I, III, IV
3. I, II, III
4. All of these

Q.

Given below two statements:

Statement 1 : ${\mathrm{C}}_2{\mathrm{H}}_5\mathrm{OH}$ and $\mathrm{AgCN}$ both can generate nucleophiles.

Statement 2 : $\mathrm{KCN}$and $\mathrm{AgCN}$ both will generate nitrile nucleophiles with all reaction conditions.

Choose the most appropriate option:

1. Statement 1 is false but statement 2 is true

2. Statement 1 is true but statement 2 is false

3. Both statement 1 and statement 2 are false

4. Both statement 1 and statement 2 are true