Question

Q-4 Define. (4)

1. Inexhaustible Natural Resource.


2. Communicable Diseases.


3. Ignition Temperature.


4. Malleability​

Answer 1

Answer:

An inexhaustible resource is a resource that never runs out or gets depleted. Some of such resources include wind, sun, solar energy,

Communicable diseased are the diseases that can be transmitted from one person to another. Eg common cold

Ignition temperature is the minimum temperature at which a combustible substance burns.

Malleability is the property of metals by which they can be converted into thin sheets. Eg silver foils on sweets

Explanation:

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Answer 2

Answer:

(1)

Inexhaustible natural resource is a natural resource that will never run out. It will not be depleted and will continue to exist forever , such as water,sunlight, tidal energy, ocean energy and wind energy.

(2)

Communicable diseases, also known as infectious diseases or transmissible diseases, are illnesses that result from the infection, presence and growth of pathogenic (capable of causing disease) biologic agents in an individual human or other animal host

(3)

The ignition temperature of a substance is the least temperature at which the substance starts combustion. Substances which spontaneously ignite in a normal atmosphere at naturally ambient temperatures are termed pyrophoric.

(4)

Malleability is a property of material by which in can be beaten to form its thin sheets.

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