1.

The given diagram shows two empty flasks (X and Y) connected by a glass Drop of ink tube. There is a drop of ink in the tube.      Which of the following will cause the drop of ink to move towards flask Y?                                a. Put flask X in a basin containing ice. b. Put flask Y in a basin containing ice. c. Put flask X in a basin containing hot water. d. Put flask Y in a basin containing hot water.

A.  a and b                      
B.  a and d     
C.  b and c          
D.                     c and d
Answer» D.                     c and d


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