The liquid phase changes to gaseous phase at a constant temperature at a given pressure is called ……………………….. 

Monjur Alahi

The liquid phase changes to gaseous phase at a constant temperature at a given pressure is called ……………………….. 

A) evaporation 

B) melting 

C) boiling 

D) condensation


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Fill in the blanks The temperature at which a liquid convert to gaseous state is called ________ of a liquid.

Correct Answer - boiling point

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The phase change from liquid to gas that occurs at the surface of liquid at any temperature is called..........

D) evaporation

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The liquid phase changes to gaseous phase at a constant temperature at a given pressure is called ……………………….. 

Correct option is  C) boiling

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The heat energy required to change 1gm of liquid to gas at constant temperature is called ………………….. 

B) latent heat of vapourization

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The process in which solid phase changes to liquid phase at a constant temperature is called 

Correct option is  B) melting

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The process in which the substance in liquid phase changes to solid phase is called …………………. 

Correct option is  C) freezing

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At this temperature water changes into gaseous state, (in Kelvin) 

Correct option is  B) 373

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When a solid changes to directly gaseous state, the process is called

B) Sublimation

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Equimolar mixture of two gases \( A_{2} \) and \( B_{2} \) is taken in a rigid vessel at temperature \( 300 K \). The gases reacts according to given equations : \[ \begin{array}{ll} A_{2}(g) \rightleftharpoons 2 A(g) & K_{P_{1}}=? \\ B_{2}(g) \rightleftharpoons & K_{P_{2}}=? \\ A_{2}(g)+B_{2}(g) & \rightleftharpoons 2 A B(g) & K_{P_{3}}=2 \end{array} \] If the initial pressure in the container was 2 atm and final pressure developed at equilibrium is \( 2.75 atm \). in which equilibrium partial pressure of gas \( A B \) was \( 0.5 atm \), calculate the ratio of \( \frac{ K _{ p _{2}}}{ K _{ p _{1}}} \). [Given : Degree of dissociation of \( B_{2} \) is greateı than \( A _{2} \) ].

this is the solution!!!! 

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Assertion (A): The temperature at which vapour pressure of a liquid is equal to the external pressure is called boiling temperature.

(iii) A is true but R is false.

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