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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