Advertisements
Advertisements
प्रश्न
People usually keep angithi/burning coal in their closed rooms during winter season. Why is it advised to keep the door open?
उत्तर
When coal burns in air, it produces carbon dioxide which is non-poisonous. But, when angithi or coal burns in a closed room, the air or oxygen cannot enter the room.
So, in the incomplete supply of oxygen, coal burns to produce carbon monoxide which is highly poisonous gas. It causes suffocation in a closed room. So, door and windows should be open.
APPEARS IN
संबंधित प्रश्न
Give reasons.
Paper by itself catches fire easily whereas a piece of paper wrapped around an aluminium pipe does not.
True or False – If False give the correct answer
Oxygen is necessary for combustion
A substance which reacts with oxygen giving heat is called a combustible substance. Which one of the following is a combustible substance?
Fill in the blanks using the words given in the box.
| ignition | petrol | combustion | calorific value | combustible | combustible |
A chemical process in which a substance reacts with oxygen to give off heat is called ______.
Any reaction that involves reaction with oxygen is called reaction ______.
Complete combustion of the fuel takes place and the colour of the flame is yellow and is the hottest part of the flame.
Complete the oxidation reaction.
CH4+2O2 → ______+______+Heat energy.
Give one example of spontaneous combustion.
What do you mean by inflammable substance?
Fill in the blanks using the words given in the box.
| ignition | petrol | combustion | calorific value | combustible | combustible |
The substances which have very low ______ temperature and can easily catch fire with a flame are called ______ substances.
