CIH Practice Test 11

10 free CIH practice questions in the real exam format, covering the official content areas, with an explanation for every answer.

CIH Practice Test 11Tutor mode

Question 1 of 10

Exposure Assessment Principles and Practice

A light-scattering aerosol photometer, factory-calibrated with a test dust, averaged 2.0 mg/m³ beside a co-located gravimetric sample that measured 1.5 mg/m³ for the same dust. The photometer later reads 2.4 mg/m³ at the same process. What is the best estimate of the actual concentration?