Question

Liquids that have different densities form
layers. The liquid with the lowest density floats
at the top and the densest liquid sinks to the
bottom. The diagram below shows 3
containers. Each container holds two different
liquids. In total, 4 different liquids are shown.
LEGEND
A
B
D
Q.1 This diagram proves that
(A) Liquid B has the highest density
(B) Liquid D has the lowest density
(C) Liquid C has a higher density than B
(D) Liquid B is more dense than either liquid A
or liquid c
Q.2 which liquid out of A,B,C,D have lowest
density ?​

Answer 1

Given:

Liquids that have different densities form layers.

The liquid with the lowest density floats at the top and the densest liquid sinks to the bottom.

To find:

Q.1 This diagram proves that

Q.2 which liquid out of A, B, C, D have the lowest density?​

Solution:

From the diagram, it's clear that,

The first container out of 3 containers has a mixture of liquids B and A.

Liquid B floats on the top of the liquid A.

⇒ the density of B < density of A

The second container out of 3 containers has a mixture of liquids A and C.

Liquid A floats on the top of the liquid C.

⇒ the density of A < density of C

The third container out of 3 containers has a mixture of liquids B and D.

Liquid D floats on the top of the liquid B.

⇒ the density of B < density of D

Overall the result is,

the density of B < density of A < density of C

the density of B < density of D

Q.1 (C) Liquid C has a higher density than B

Q.2 The liquid B out of A, B, C, D have the lowest density.