CameraIcon

SearchIcon

MyQuestionIcon

3

You visited us 3 times! Enjoying our articles? Unlock Full Access!

Fuel

Rashi soaked ...

Question

Rashi soaked her table cloth in the mixture of alcohol and water, on exposure to heat quickly catches fire which gets extinguished after a short while without burning the cloth. Why is it so?

A

The ignition temperature of alcohol is higher than cloth.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

The ignition temperature of cloth is higher than that of alcohol.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

The matchstick was of bad quality.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

Both A and C

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B
The ignition temperature of cloth is higher than that of alcohol.

The ignition temperature of alcohol is lower than that of the cloth. When exposed to heat, alcohol catches fire. The heat produced due to the burning of alcohol is not sufficient to raise the temperature of the wet cloth to its ignition temperature. Thus, the fire gets extinguished after alcohol is burnt and the cloth remains unburnt.

Suggest Corrections

thumbs-up

0

Similar questions

Q. Question 16
Fill in the blanks in the following sentences.
(a) A ____________ process in which a substance reacts with __________ to give off heat is called combustion.

(b) When the clothes of a person catch __________, the person is covered with a __________ to extinguish fire.

(c) The __________ temperature at which a substance catches fire is called its ignition temperature.

(d) The substances which have very ________________ ignition temperature and can easily catch fire with a flame are called __________ substances.

(e) The substances which vapourise during __________, give flame.

Q. Question 16
Fill in the blanks in the following sentences.
(a) A ____________ process in which a substance reacts with __________ to give off heat is called combustion.

(b) When the clothes of a person catch __________, the person is covered with a __________ to extinguish fire.

(c) The __________ temperature at which a substance catches fire is called its ignition temperature.

(d) The substances which have very ________________ ignition temperature and can easily catch fire with a flame are called __________ substances.

(e) The substances which vapourise during __________, give flame.

Q. Fill in the blanks in the following sentences.
(a) A ____________ process in which a substance reacts with__________ to give off heat is called combustion.
(b) When the clothes of a person catch __________, the person is covered with a __________ to extinguish fire.
(c) The __________ temperature at which a substance catches fire is called its __________ temperature.
(d) The substances which have very ________________ ignition temperature and can easily catch fire with a flame are called__________ substances.
(e) The substances which vapourise during __________, give flame.

If the clothes of a person working in the kitchen catch fire, then to extinguish the fire :

(a) sand should be thrown over the burning clothes

(b) water should be thrown over the burning clothes

(c) polyester blanket should be used to cover the burning clothes

(d) woollen blanket should be used to cover the burning clothes

While working in the kitchen, clothes of Priya catches fire accidentally causing severe burns. The person is most likely wearing clothes made of :

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Judicious Use of Energy

PHYSICS

Watch in App

explore_more_icon

Explore more

Standard IX Physics

Join BYJU'S Learning Program

CrossIcon