GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Hardness
A
Physical property
B
Chemical property
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -Hardness is the ability of a material to resist deformation, which is determined by a standard test where the surface resistance to indentation is measured. The most commonly used hardness tests are defined by the shape or type of indent, the size, and the amount of load applied.

Detailed explanation-2: -Physical properties include color, density, hardness, and melting and boiling points. A chemical property describes the ability of a substance to undergo a specific chemical change.

Detailed explanation-3: -Examples of physical properties are color, density, and hardness. Properties that describe how matter changes into a completely new, different substance are chemical properties. Flammability and reactivity are examples of chemical properties.

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