TNPSC Group 1, 2, 2a, 4, VAO Inventions and Discoveries Quiz Questions - 3
Question: 11
Instrument used to measure the force and velocity of the wind is
(A) Audiometer
(B) Altimeter
(C) Anemometer
(D) Ammeter
Ans: C
Anemometer
Question: 12
Wavelength of which of the following colours of the visible spectrum of light are maximally absorbed by green plants?
(A) Blue and Yellow
(B) Green and Yellow
(C) Red and Blue
(D) Green and Red
Ans: C
Red and Blue
Question: 13
Which one of the following is not required for the formation of photochemical smog?
(A) Oxide of nitrogen
(B) Sun light
(C) Oxygen
(D) Carbon monoxide
Ans: C
Oxygen
Question: 14
Gunpowder was invented by
(A) CV Raman
(B) Dr Gatting
(C) Colt
(D) Roger Bacon
Ans: C
Colt
Question: 15
Which one of the following is the secondary source of light in a fluorescent lamp?
(A) Fluorescent coating on the glass
(B) Neon gas
(C) Argon gas
(D) Mercury vapor
Ans: D
Mercury vapor
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