NEHA RS/REHS EXAM 2026 TEST PAPER QUESTIONS AND VERIFIED SOLUTIONS

NEHA RS/REHS EXAM 2026 TEST PAPER
QUESTIONS AND VERIFIED SOLUTIONS

◉ Question 2
Marks: 1
Particulates larger than 10 microns can penetrate easily into the
respiratory tract.
Choose one answer.


a. True


b. False. Answer: False


◉ Question 3
Marks: 1
It is possible to control noise
Choose one answer.


a. at the source
b. in its path of transmission
c. where it is received

,d. all of the above. Answer: all of the above


◉ Question 4
Marks: 1
Fluorocarbons in the atmosphere are of concern because they may
Choose one answer.


a. react with the ozone in the upper atmosphere, thus reducing the
total amount of ozone available


b. cause an increase in ultraviolet radiation reaching the earth


c. cause an increase in skin cancers and changes in our climate,
animal, and plant life


d. all of the above. Answer: all of the above


◉ Question 5
Marks: 1
The terms "washout" and "rainout" both refer to a cleansing process
of pollutants in the atmosphere.
Choose one answer.

,a. True


b. False. Answer: True


◉ Question 6
Marks: 1
A ______ is a dimensionless unit to express physical intensity or
sound pressure levels.
Choose one answer.


a. noise level


b. decibel


c. hertz


d. sound pressure level (SPL). Answer: decibel


◉ Question 7
Marks: 1
The frequency of a sound determines its pitch.

, Choose one answer.


a. True


b. False. Answer: True


◉ Question 8
Marks: 1
When two pollutants are combined, the effects are greater than the
sum of the individual effects. This is called
Choose one answer.


a. commensalism


b. synergism


c. magnification


d. multiplication. Answer: synergism


◉ Question 9
Marks: 1