Science, asked by bhatnagarsunita70, 3 months ago

The ignition temperature of four substances P, Q, R and S are 125°C, 270°C, 155°C and
310°C respectively. Which of following pairs of substances catches fire at 250°C?
a) Q & S
b) P&R C) R & S
d) P &Q​

Answers

Answered by hs8079192
1

Explanation:

he temperature at which a substance starts burning or catches fire is called it's ignition temperature. For substance burn the temperature should be greater than or equal to ignition temperature. 

As p and r have ignition temperature 125°C  and 155°C which is less than 250°C.

Therefore p and r will catch fire. 

Option B is correct

Previous Question
Next Question
Similar questions
Physics, 1 month ago
what actually travels through the wire when you switch on a light ​...
Geography, 1 month ago
1.Select the correct option: (a)Which of the following is not a cardinal direction? (i)North (ii) West (iii) South-East (iv) East (b)Map that shows the continent, countries and capitals is called as ……map. (i)Physical (ii) Political (iii) Thematic (iv) None (c) Which of the following is not made to scale? (i) Globe (ii) Map (iii) Plan (iv) Sketch (d)The person who makes maps is called…..
Math, 1 month ago
7,15,31,55 ,127 find missing number series...
English, 3 months ago
Today morning I was going to the market. I met a beggar who was young. I was surprised.I asked ___________________.
Geography, 3 months ago
which is the highest peak of the Africa?​
World Languages, 10 months ago
American book are interesting Pick out adjective and its kind...
English, 10 months ago
Write a letter to your friend describing her/him the way you and your family creatively utilized during the lockdown days due to Covid - 19 outspread.
Math, 10 months ago
√3x square+6=9 ka dhan atmak Mul kya hai...