EASY
Earn 100

When is water used to extinguish fire?

Important Questions on Combustion and Flame

MEDIUM
Science>Chemistry>Combustion and Flame>Controlling the Fire

A metal compound A reacts with dilute hydrochloric acid to produce effervescence. The gas evolved extinguishes a burning candle.

Name the gas that extinguishes the burning candle.

MEDIUM
Science>Chemistry>Combustion and Flame>Controlling the Fire
Why are fires produced by burning oil not extinguished by pouring water?
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling the Fire
Never put out a fire caused by oil with _____.
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling the Fire
What does a Fire Brigade do when it arrives at a place where a building is on fire?
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling the Fire
How should different kinds of fire be put out?
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling the Fire
Explain why, fire caused by electricity should not be extinguished by pouring water?
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling the Fire
State any five measures to safeguard ourselves from fire.
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling the Fire
Fire caused due to electrical faults should be put out using water.
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling the Fire
A drum full of kerosene catches fire. What is the simplest way to put off this fire?
EASY
Science>Chemistry>Combustion and Flame>Controlling the Fire
What is the first thing you should do if a fire breaks out in your house or neighbourhood?
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling the Fire
How does pouring water extinguish a fire?
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling the Fire
A second-degree burn involves blistering of the skin.
HARD
Science>Chemistry>Combustion and Flame>Controlling the Fire
How is the fire produced by burning oil (or petrol) extinguished?
EASY
Science>Chemistry>Combustion and Flame>Controlling the Fire
Give reason, why water is not used to control fires involving electrical equipment?
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling the Fire

Match the columns: 

Column A Column B
1. CO2 (i) Lava
2. Water purifier (ii) Quartzite
3. Sandstone (iii) Tsunami
4. Obsidian (iv) Fire extinguisher
5. Earthquake (v) Ultra-violet rays
EASY
Science>Chemistry>Combustion and Flame>Controlling the Fire
Explain how CO2 is able to control fires?
EASY
Science>Chemistry>Combustion and Flame>Controlling the Fire
Describe one method of putting out a fire caused by burning wood or paper.
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling the Fire

Fill in the blank with an appropriate option:

A special instrument used to put out small fires: _____ (Fire extinguisher/ Fire cracker)

MEDIUM
Science>Chemistry>Combustion and Flame>Controlling the Fire
What is a fire extinguisher? What is the substance used in the modern type of fire extinguishers? How is it an improvement over the soda acid-type and the foam-type fire extinguishers ?
MEDIUM
Science>Chemistry>Combustion and Flame>Controlling the Fire
How is the fire caused by electricity extinguished?