Question

why do we get black patch on a screen kept over a flame for sometime​

Answer 1

Answer:

this is because of the burning reaction, O2 is taken in and CO2 is given out the CO2's comprises of carbon therefore the black patch is carbon deposits

HOPE IT HELPED :)

Answer 2

$\huge\boxed{\mathfrak{\pink{\fcolorbox{red}{black}{Question:-}}}}$

$\small\boxed{\mathfrak{\pink{\fcolorbox{red}{blaxk}{☆}}}}$why do we get black patch on a screen kept over a flame for sometime.$\small\boxed{\mathfrak{\pink{\fcolorbox{red}{blaxk}{☆}}}}$

$\huge\boxed{\mathfrak{\pink{\fcolorbox{red}{blaxk}{Answer}}}}$

$\small\boxed{\mathfrak{\pink{\fcolorbox{red}{blaxk}{❁}}}}$Black spots are often caused by nothing more than superficial dirt or debris. Over time, dirt and debris will accumulate on the surface of LCDs. If left unchecked, this dirt or debris may manifest as one or more black spots.$\small\boxed{\mathfrak{\pink{\fcolorbox{red}{blaxk}{❁}}}}$

❤Thank you.,❤