UV Rays -Multiple Choice Questions Quiz

Interactive MCQs on “UV Rays”:

Solve the following 10 questions. Only one option is correct. Click on the “Submit” button when done. Click on the “embed” button to use this quiz on your website. Click on “WhatsApp” to share this quiz.

Question 1: What does UV stand for in UV rays?

(a) Ultra Visible
(b) Ultra Vibrant
(c) Ultraviolet
(d) Under Vacuum

Question 2: What is the primary source of UV rays that reach the Earth's surface?

(a) UV lamps
(b) UV lasers
(c) UV torches
(d) The Sun

Question 3: Which type of UV rays are more harmful to living organisms and can cause skin damage and increase the risk of skin cancer?

(a) UVA rays
(b) UVB rays
(c) UVC rays
(d) All UV rays are equally harmful

Question 4: Which layer of the Earth's atmosphere absorbs the majority of UVC rays, preventing them from reaching the surface?

(a) Troposphere
(b) Stratosphere
(c) Mesosphere
(d) Thermosphere

Question 5: Which type of UV rays are less energetic and have longer wavelengths compared to UVB and UVC rays?

(a) UVA rays
(b) UVB rays
(c) UVC rays
(d) All UV rays have the same energy and wavelength

Question 6: Which type of UV rays are responsible for causing premature aging, wrinkles, and other skin damage?

(a) UVA rays
(b) UVB rays
(c) UVC rays
(d) All UV rays have similar effects on the skin

Question 7: What type of UV rays are mostly blocked by the Earth's ozone layer?

(a) UVA rays
(b) UVB rays
(c) UVC rays
(d) None of the above

Question 8: What is the primary method to protect the skin from harmful UV rays?

(a) Wearing sunglasses
(b) Using sunscreen
(c) Wearing long-sleeved clothing
(d) Avoiding going outdoors during the day

Question 9: Which type of UV rays are used in germicidal lamps for sterilization purposes?

(a) UVA rays
(b) UVB rays
(c) UVC rays
(d) All UV rays are used for sterilization

Question 10: What is the main reason behind the formation of the 'ozone hole' in the Earth's atmosphere?

(a) Depletion of UVA rays
(b) Depletion of UVB rays
(c) Depletion of UVC rays
(d) Depletion of ozone-depleting substances