<u>Answer:</u> The mass of plastic sheet is 
<u>Explanation:</u>
The plastic sheet is in the form of cuboid. To calculate the volume of cuboid, we use the equation:

where,
V = volume of cuboid
l = length of cuboid = 10.0 m = 1000 cm (Conversion factor: 1 m = 100 cm)
b = breadth of cuboid = 1.0 m = 100 cm
h = height of cuboid = 1 cm
Putting values in above equation, we get:

To calculate mass of a substance, we use the equation:
We are given:
Density of plastic sheet = 
Volume of plastic sheet = 
Putting values in equation 1, we get:

Hence, the mass of plastic sheet is 
The formula for density is density =

. Substituting the given, the density is 162.69 g/cm3.
It would be acidic based indicator.
0-6 is acidic
7 is neutral
8-14 is alkaline
False. It is a fluid as it is in its liquid state possessing qualities of a liquid just that it is viscious