How many people lack access to essential drinking water in 2019?
a) 700 million
b) 600 million
c) 785 million
d) 900 million
When sound becomes unwanted and loaded it leads to?
a) noise pollution
b) air pollution
c) water pollution
d) all of these
Which of the following pollution is called invisible danger and cannot be seen?
a) noise pollution
b) water pollution
c) land pollution
d) air pollution
Which of the following are the main impacts of noise pollution?
a) hearing loss
b) stress
c) high blood pressure
d) all of these
Sound which has jarring effect on ears is……..
a) Noise
b) Music’s
c) Pleasant sound
d) Soul music
A safe level of noise depends on……………...
a) Level of noise and exposure to noise
b) Pitch
c) Frequency
