1.

According to Maxwell distribution, the area under the curve is equal to the total number of molecules in collision. On increasing temperature, fraction of molecules having speed equal to u_(mp) .(most probable speed) decreases. The speed distribution also depends on the mass of the molecules along with the temperature. In general, the distribution depends upon the value of M/T (where M is molar mass and Tis temperature in kelvin).  On increasing the temperature, number of molecules having speed between u_1 and u_2

Answer»

increases 
decreases 
remains constant 
can't be determined 

SOLUTION :Number of MOLECULES CLOSER to `U_(mp)` increases.


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