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Delhi Police Constable Exam Model Paper 7
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© examsnet.com
Question : 1
Total: 100
"Lactometer" is used to determine-
Hydrogen in water
Purity of petrol
Purity of milk
Purity of water
Validate
Solution:
The correct answer is
Purity of milk
.
A Lactometer is used to
find out the amount of water in the milk that you are drinking
It works on the
principle of specific gravity of milk
It consists of
a
TEST-TUBE and a METER BULB
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