CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Petroleum

Choose the co...

Question

Choose the correct option and fill in the blanks:
Materials that burn in air producing a large amount of heat energy are called ________ (acids/fuels).

Open in App

Solution

Fuels are those substances that when set on fire, start burning giving out lots of heat and light.
Therefore, materials that burn in air producing a large amount of heat energy are called fuels.

Suggest Corrections

thumbs-up

0

Similar questions

Fill in the following blanks with suitable words :

(a) A fuel must be heated to its___ before it starts burning.

(b) The most common supporter of combustion around us is___

(c) Fire produced by burning oil cannot be controlled by___

(d) A liquid fuel used in homes is___

(e) The amount of heat evolved when 1 kg of a fuel is burnt completely is called its___

(f) The substances which vaporise during burning, give___

(g) Burning of wood and coal causes___ of air.

Q. Fill in the following blank with a suitable word:
The amount of heat produce by burning a unit mass of a fuel completely is known as its ............ value.

Fill in the blanks:

(a) Burning of wood and coal causes _______ __ of air.

(b) A liquid fuel used in homes is ___________.

(c) Fuel must be heated to its ___________ before it starts burning.

(d) Fire produced by oil cannot be controlled by ________ _.

Q. Fill in the blanks with the correct words.

1. Green plants make their own food through a process called .................... (photosynthesis/autotrophs).
2. .................... (Canines/Molars) are large back teeth having a wide grinding surface and are used primarily to chew food.
3. Wool is a/an .................... (plant/animal) fibre.
4. The number of atoms present in one molecule of an element is known as its .................... (monotony/atomicity).
5. Materials containing an acid are called .................... (basic/acidic) substances.

Q. Question 14
Choose the incorrect statement from the following. A good fuel is one which:

(a) is readily available.
(b) produces a large amount of heat.
(c) leaves behind many undesirable substances.
(d) burns easily in the air at a moderate rate.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Petroleum

SCIENCE

Watch in App

explore_more_icon

Explore more

Standard V Science

Join BYJU'S Learning Program

CrossIcon