Properties of Air and Water NDA Questions

NDA Chemistry

Properties of Air and Water MCQ Questions


13.
_______ layer found in stratosphere layer absorbs harmful ultraviolet rays which can cause damage to our skin and eyes.
A.
Oxygen
B.
Clouds
C.
Ozone
D.
Carbon dioxide
😑 View Answer Rough Work Error
ANSWER :
C. Ozone
14.
The region above the stratosphere is called the _______
A.
Troposphere
B.
Exosphere
C.
Thermosphere
D.
Mesosphere
😑 View Answer Rough Work Error
ANSWER :
D. Mesosphere
15.
Mesosphere extends upward to a height of about ______ km from the ground.
A.
14
B.
85
C.
72
D.
90
😑 View Answer Rough Work Error
ANSWER :
B. 85
16.
The outermost layer of the atmosphere is called the ______
A.
Exosphere
B.
Troposphere
C.
Thermosphere
D.
Mesosphere
😑 View Answer Rough Work Error
ANSWER :
A. Exosphere
17.
Exosphere lies between 400 - _______ km above the Earth.
A.
1200
B.
1300
C.
1400
D.
1500
😑 View Answer Rough Work Error
ANSWER :
D. 1500
18.
Which of the following is the recreational and competitive adventure sport of flying?
A.
Swimming
B.
Running
C.
Paragliding
D.
None of the above
😑 View Answer Rough Work Error
ANSWER :
C. Paragliding