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Science Test Space
Class 8
Fluids
Relative density and buoyancy
2.
Nature of fluids and density
Question:
3
m.
Pick
true or false
:
1
.
The principle of working of hydrometer is based on "Law of flotation".
False
True
2
.
A lactometer is a device that measures the purity of alcohol and it operates on the basis of gravity of milk.
True
False
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