Question

The ignition temperature of four substances A,B,C and D are 35°C,40°C,60°C and 65°C.Which of these would undergo combustion at 50°C?

Answer 1

Given info : The autoignition temperature of four substance A , B , C and D are 35°C , 40°C  , 60°C  and 65°C.

To find : which of these would undrgo combustion at 50°C ?

solution : at first, you should understand the meaning of autoignition temperature.

autoignition temperature is the minimum temperature at which a substance must be heated to initiate the combustion.

  for example , if autoignition temperature of a substance X is 10°C . it means, it is the minimum temperature needed to initiate combustion.

here, autoigniton temperature of four substances A, B, C and D are 35°C, 40°C, 60°C and 65°C.

you see, 50°C > 35°C, 40°C

it means only substances A and B would undergo combustin at 50°C.