What Do You Observe When a Beam of Light is Allowed to Enter in a Closed Dark Room Through a Small Hole. - Chemistry

What do you observe when a beam of light is allowed to enter in a closed dark room through a small hole.

One Line Answer

We will observe randomly moving dust particles in the beam of light. This confirms the presence of dust particles in the air.

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Chapter 6: Air and Atmosphere - Exercise 1

Chapter 6 Air and Atmosphere
Exercise 1 | Q 7.4

Define rusting?

How is air useful to scooters and cars.?

What is air pollution?

______ soil has pH 7.

How is light scattered by the air?

Match the statements in List I with the correct answer from List II.

List I	List II
1. The constituent of air which is around 0.02%	A: Nitrogen
2. The constituent of air which is inert or unreactive	B: Oxygen
3. The constituent of air which is non-combustible, but supports combustion.	C: Sulphur dioxide
4. A pollutant in air responsible for acid rain	D: Carbon dioxide
5. The main rare gas present in air.	E: Argon

Fill in the blank:

The gas evolved as a product of combustion as well as respiration is ______.

The process of conversion of iron into hydrated form of oxides is called _______.

In the boxes of Column, I the letters of some words got jumbled. Arrange them in proper form in the boxes given in Column II

Column I		Column II
(a)	\[\boxed{\text{D}}\]\[\boxed{\text{I}}\]\[\boxed{\text{L}}\]\[\boxed{\text{L}}\]\[\boxed{\text{M}}\]\[\boxed{\text{W}}\]\[\boxed{\text{I}}\]\[\boxed{\text{N}}\]	(a)	`squaresquaresquaresquaresquaresquaresquare square`
(b)	\[\boxed{\text{Y}}\]\[\boxed{\text{N}}\]\[\boxed{\text{O}}\]\[\boxed{\text{G}}\]\[\boxed{\text{X}}\]\[\boxed{\text{E}}\]	(b)	`squaresquaresquaresquaresquare square`
(c)	\[\boxed{\text{M}}\]\[\boxed{\text{E}}\]\[\boxed{\text{S}}\]\[\boxed{\text{K}}\]\[\boxed{\text{O}}\]	(c)	`squaresquaresquaresquaresquare`
(d)	\[\boxed{\text{T}}\]\[\boxed{\text{U}}\]\[\boxed{\text{D}}\]\[\boxed{\text{S}}\]	(d)	`squaresquaresquare`

A list of words is given in a box. Use appropriate words to fill up the blank in the following statement.

Air is a ______ of some gases.