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This is the second of our many quizzes on State changes. Click on this to access more such competitive quizzes on Physical Chemistry.

State changes Quiz 2

chemistry

 Potassium permanganate diffuses in water, select a suitable comment in the options.

 Diffusion is going to depend on the solubility of the compound as diffusion is directly proportional to solubility. 

 Potassium permanganate is highly soluble in water, that is the diffusion of reason potassium permanganate is very quick and completes in less than a second.

 One of the given options is not going to suit the property of a solid. Find the correct option?

  Solids have a definite shape and mass. The mass and shape of the solid are going to change with the packing of the atoms.

 Color is not a property of the solid because color of a molecule is going to depend on the refractive index of the atoms present in it. Therefore, color is not a property of the solid.

 Find the correct statement which describes the gas particles?

 The molecules present in the gas have very low attractive forces between them.

 Because of less attraction between the gaseous atoms or molecules, they always collide with each other and move very fast and stay apart.

  The below diagram shows that the gas particles occupy lots of space in a cube and the arrows show the velocities of the gas particles. Choose the correct property of the gas which is going to match with the gaseous states of the matter.  $ \\ $<img  src="https://cmds-vedantu.s3.ap-southeast-1.amazonaws.com/prod/question-sets/34f05544-b20d-428d-9ee4-69bb8c8d33952726560507321487073.png"/>

 By applying pressure, we can decrease the volume of the gas in a vessel. 

   The gas particles present in the cube are showing a particular direction of the moment in the given diagram. Therefore, by using some amount of pressure, we can compress the gas-particle in the particular cube.

 In a container, an identical amount of methane and nitrogen gas is present. Calculate the pressure applied by the methane gas in the given mixture of gases.

 The pressure exerted by a gas A on B calculated by using the below formula: $ \\ \dfrac{{{P}_{A}}}{{{P}_{A}}+{{P}_{B}}}=\dfrac{{{n}_{A}}}{{{n}_{A}}+{{n}_{B}}} \\ $ Here, P = Pressure and n  = number of moles of a particular gas. 

$ \dfrac{{{P}_{m}}}{{{P}_{m}}+{{P}_{{{N}_{2}}}}}=\dfrac{{{n}_{m}}}{{{n}_{m}}+{{n}_{{{N}_{2}}}}} \\ =\dfrac{\dfrac{W}{16}}{\dfrac{W}{16}+\dfrac{W}{28}} \\  =\dfrac{7}{11} \\ \text{Here}\\ {{\text{n}}_{\text{m}}}\text{=Number of moles of methane} \\ {{\text{n}}_{{{\text{N}}_{\text{2}}}}}=\text{Number of moles of nitrogen} \\ {{\text{P}}_{\text{m}}}\text{=Pressure of methane} \\  {{\text{P}}_{{{\text{N}}_{\text{2}}}}}=\text{Pressure of nitrogen} $