Question : Stereo was invented by _______.

Option 1: John Barber

Option 2: Tim Berners-Lee

Option 3: Alan Blumlein

Option 4: David Brewster

Question : Who invented the electric bulb?

Option 1: Thomas More

Option 2: Thomas Alva Edison

Option 3: James Watt

Option 4: None of these

Question : Simplify the expression: $\frac{(u–v)^{3}+(v–w)^{3}+(w–u)^{3}}{(u^{2}–v^{2})^{3}+(v^{2}–w^{2})^{3}+(w^{2}–u^{2})^{3}}$

Option 1: $\frac{1}{(u+v)(v+w)(w+u)}$

Option 2: $1$

Option 3: $\frac{3}{(u+v)(v+w)(w+u)}$

Option 4: $0$

Question : Who invented the battery?

Option 1: Roentgen

Option 2: Volta

Option 3: Faraday

Option 4: Maxwell

Question : Who invented Helicopter?

Option 1: Nicolaus Copernicus

Option 2: Igor Sikorsky

Option 3: Kenneth Cockrell

Option 4: Drinker