Question

1. Noble gases

2. Combination reaction

3. Factor affecting the value of graving.
Give example​

Answer 1

Answer:

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Answer 2

Answer:

1) Noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. ... The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og).

2) Examples for combination reaction:

Here sodium oxide is combined with water gives sodium hydroxide. Here lithium is combined with oxygen to form lithium oxide. Here magnesium is combined with oxygen to form magnesium oxide. Here hydrogen is combined with chlorine to form hydrochloride.

3) FACTORS AFFECTING A PRESSURE IN A LIQUID - RESULT

Following are the factors which affect the pressure at a point in liquid

1) Density of liquid (ρ)

2) Depth of liquid (h)

3) Acceleration due to gravity (g)

Pressure in a liquid at a depth is given by P=hρg

CHARACTERISTICS OF LIQUID PRESSURE - EXAMPLE

concept

These are the following characteristics of liquid pressure: -

1. Increase with depth.

2. Acts in all directions.

3. Does not depend on the area of its surface.

4. Does not depend on the shape or size of the container.

5. The pressure at the two point at the same level in the same liquid is same.

PROPERTIES OF LIQUID PRESSURE - DEFINITION

Liquid pressure at same horizontal level of liquid is same.

Though pressure opposite to the surface, it is a scalar quantity.

Pressure at a point in a liquid is same in all directions.

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