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HomePhysics29. Mercury does not wet glass, wood or iron because

29. Mercury does not wet glass, wood or iron because

(a)  Cohesive force is less than adhesive force

(b)  Cohesive force is greater than adhesive force

(c)   Angle of contact is less than 90o

(d)  Cohesive force is equal to adhesive force

Ans. b

(29)

5/5 - (1 vote)

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12. An ideal gas is taken through the cycle A→ B → C → A, as shown in the figure. If the net heat supplied to the gas in the cycle is 5 J, the work done by the gas in the process C → A is

(a)      – 5 J (b)  – 10 J (c)   – 15 J (d)  – 20 J Answer-a (126)

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