Write any three main uses of non-metals

Answers 2

Step-by-step explanation:

  1. Used to make gunpowder, fireworks, and matches to facilitate ignition.
  2. Used in the manufacture of rubber for tires and other materials.
  3. Used as an insecticide or a fumigant.

1. for making matchsticks phosphorus is used.

2. for body functioning and to breathe and other things oxygen is used.

3. for making jewellry, cuttingand grinding equipments diamond is used.

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The molecules of a solid can vibrate only about what m from their mean positions.

Answer:

They are held to the nearby molecules by attractions (intermolecular bonds) and they are so crowded that they have little room to move. No matter which direction they travel, there is another molecule there that they will bounce off of. That molecule does not get shoved out of the way because it is held to its neighbors by the same bonds.

This arrangement breaks down on the surfaces of such solids. Molecules on the surface have a direction to move in which the opposition is much much lower (away from the solid into the surroundings). These molecules can move away (we call it evaporation of sublimation). This is why we can smell solids.

Explanation:

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X^2+4=1, whats the value of x?

Answer:

X*2+4=1

X*2=4-1

X*2=3

X=√3

Answer:

Given,

4

x

+

2

1

=4

⇒

8

2x+4

=4

⇒2x+4=32

⇒2x=32−4=28

⇒x=

2

28

=14

Hence, solution is x=14.

Explanation:

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मेहनत का तत्सम रूप क्या है?

परिश्रम is the the right answer.

Answer:

मेह का तत्सम रूप मेघ है़I

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