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This is one of our many quizzes on Matter. Click on this to access more such competitive quizzes on General Chemistry.

Matter Quiz 2

chemistry

 Find the parameters at which water is going to exist as ice $($solid state$)$ among the given options?

 By decreasing the temperature of the water from room temperature at a certain value water is going to convert into ice at a certain pressure.

At $0^\circ C$ is nothing but 273 K temperature and 4.7 mm of pressure water is going to exist in solid state $($ice$)$. 

 There is an organic liquid whose melting point is $-{{115}^\circ }C$ and the boiling point of the organic liquid is ${{85}^\circ }C$ . Find the state of the organic liquid at $60^\circ C$ ?

 The temperature at which the liquid starts evaporates then the temperature is called boiling point. 

In the question it is given that the boiling point of the liquid is ${{85}^\circ }C$ and its melting point is $-{{115}^\circ }C$ . We have to find the state of the organic liquid at ${{60}^\circ }C$ . At ${{85}^\circ }C$ the organic liquid starts evaporating. Then the organic liquid will be in liquid state at ${{60}^\circ }C$ . 

 Find the chemical in the given options containing highest intermolecular forces at room temperature?

  The gases and the liquids at room temperature contain low molecular attractions. So that they exist in liquid and gaseous state at room temperature.

 In the given options water is a liquid and has intermolecular forces high when compared to helium $($gas$)$. Copper is solid at room temperature and will have more intermolecular forces when compared to water and helium. 

 Find out the gas which has a high force of attraction between their molecules among the given options?

 Only few gases have high force attraction in between them due to the presence of the London dispersion forces.

 The gas which has a high force of attraction between them is carbon dioxide among the given options. Because there is an existence of electropositivity towards carbon with high electronegativity value for oxygen. So the oxygen will get partial negative charge and the carbon will get partial positive charge. So there is the existence of intermolecular forces between the carbon dioxide molecules. 

 Observe the below image and answer the given question. $ \\ $ <img  src="https://cmds-vedantu.s3.ap-southeast-1.amazonaws.com/prod/question-sets/511b36b1-3e6c-4c5c-a35e-23b71847fa9c5775825535179517107.png"/> $ \\ $ Two containers contain 15 gm of hydrogen and 150 gm of helium gas separately. Both gases are going to escape from the hole of the container. Find out which gas is going to escape with high speed from the two containers?

 The gas with low molecular weight or low atomic weight will diffuse first and later the gas with high molecular weight diffuses later. 

 Both the gases have the same quantity of 150 gm but the gas hydrogen has low molecular weight when compared to helium.  $ \\ $ Rate of diffusion is inversely proportional to molecular weight of the gas. $ \\ $ Rate of diffusion $\alpha \dfrac{1}{\sqrt{Molecular\text{ }weight}}$ 