If low pressure of 10-6 mm of Hg is required to be measured, we should – McqOptions

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1.	If low pressure of 10-6 mm of Hg is required to be measured, we should use
A.	compound pressure gauge
B.	thermocouple vacuum gauge
C.	Pirani gauge
D.	ionization type vacuum gauge
Answer» D. ionization type vacuum gauge

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