An open u-tube manometer has a column of water 40 cm high on one side supporting a 31 cm column of an unknown fluid on the other side. What is the density of the unknown fluid.

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.

the answer is b. dilution

the answer is true. hope it .