how does surface tension varies with temp.

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Solution

Dear Student ,
$S u r f a c e t e n s i o n d e c r e a s e s w h e n t e m p e r a t u r e i n c r e a s e s b e c a u s e c o h e s i v e f o r c e s d e c r e a s e w i t h a n i n c r e a s e o f m o l e c u l a r t h e r m a l a c t i v i t y . T h e i n f l u e n c e o f t h e s u r r o u n d i n g e n v i r o n m e n t i s d u e t o t h e a d h e s i v e a c t i o n l i q u i d m o l e c u l e s h a v e a t t h e i n t e r f a c e .$

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