scientist, discoveries & inventions MCQ section 2 Practice Questions Answers Test with Solutions & More Shortcuts

Question : 6 [SSC CHSL 2016]

An anemometer measures which of the following ?

a) Speed of satellites

b) Speed of light

c) Speed of water current

d) Speed of wind

Question : 7 [SSC CGL 2014]

A tachometer is a device used to measure

a) dispersive power

b) gravitational pull

c) surface tension

d) speed of rotation

Question : 8 [IAS (Pre) 2009]

Who of the following scientists proved that the stars with mass less than 1.44 times the mass of the Sun end up as White Dwarfs when they die?

a) Stephen Hawking

b) Steven Weinberg

c) Edwin Hubble

d) S. Chandrashekhar

Question : 9 [MPPCS (Pre) 2010]

Who discovered electric bulb?

a) William Cooke

b) Terry Addison

c) Thomas Edison

d) Alexander Graham Bell

Question : 10 [MPPCS (Pre) 1995]

Alfred Nobel invented

a) Dynamite

b) Gramophone

c) Microphone

d) Typewriter