Matter in Our Surrounding Test

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Matter in Our Surrounding Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

What is the physical state of water at 100⁰C ?

A
gaseous

B
Liquid

C
Solid

D
All of these

Solution

Explanation:

Water exists in all three physical state of matter. At 100⁰C, physical state of matter is gaseous. Boiling point of pure water is 100⁰C, so water changes into water vapour at this temperature.
Question 2
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According to ancient philosophers matter consists of

A
Six constituents

B
three constituents

C
Five constituents

D
four constituent

Solution

Explanation:

According to ancient philosophers matter consists of five constituents (panchtatva). They are air, earth, fire, sky and water.
Question 3
1 / -0

Name the state of matter that ‘has minimum inter-particle force of attraction’

A
Solid

B
Liquid

C
gas

D
All of these

Solution

Explanation:

The particles of gases are away from each other. So, gas has the minimum inter-particle force of attraction.
Solids have maximum force of attraction
Question 4
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Identify the incorrect statement

A
Ether is most volatile

B
Alcohol is moderately volatile

C
Water is least volatile

D
Acetone is least volatile

Solution

Explanation:

Ether and Acetone is most volatile. Alcohol is moderately volatile and water is least volatile. So, the statement, Acetone is least volatile is incorrect statement.
Question 5
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Statement A: Celsius scale is the best scale for measuring temperature.
Statement B: CO₂ is heavier gas than both N₂ and O₂.
Which of the two statements is true?

A
Statement B

B
Statement A

C
Neither a nor b

D
Both a and b

Solution

Explanation:

Kelvin scale is used as standard unit of temperature. CO₂ is heavier gas than N₂ and O₂.
Question 6
1 / -0

What is the physical state of water at 10⁰C ?

A
Solid

B
gas

C
Ionic

D
Liquid

Solution

Explanation:

The physical state of water at 10⁰C is the liquid state. Below 0⁰C water in solid state and above 100⁰C water in the vapour state.
Question 7
1 / -0

The room temperature on Celsius scale is 25⁰C. What is the temperature on the Kelvin scale?

A
298K

B
50K

C
200K

D
300K

Solution

K=^∘C + 273, 25^∘C = 273 + 25 = 298K. So, temperature of 25⁰C is equal to 298K.
Question 8
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Which of the two statements is true?

Statement A: In Kelvin temperature, the symbol (∘) is not used.

Statement B: Mercury is used in glass thermometers because it does not stick with glass.

A
Neither A nor B

B
Both A and B.

C
Statement A

D
Statement B

Solution

Explanation:

In Kelvin temperature, the symbol (∘) is not used.

Mercury is used in glass thermometers because it does not stick with glass and have a shiny surface to view easily.
Question 9
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Name one common substance which can undergo a change in state upon heating or cooling.

A
Water

B
Diamond

C
Sugar

D
Salt

Solution

Explanation:

Water can undergo a change in state upon heating and cooling. On heating above 100⁰C water change into a gaseous state and on cooling below 0⁰C it changes into the solid state.

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Re-Attempt Weekly Quiz Competition

Matter in Our Surrounding Test - 1

Result

Matter in Our Surrounding Test - 1

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SHARING IS CARING

Question 1

gaseous

Liquid

Solid

All of these

Solution

Question 2

Six constituents

three constituents

Five constituents

four constituent

Solution

Question 3

Solid

Liquid

gas

All of these

Solution

Question 4

Ether is most volatile

Alcohol is moderately volatile

Water is least volatile

Acetone is least volatile

Solution

Question 5

Statement B

Statement A

Neither a nor b

Both a and b

Solution

Question 6

Solid

gas

Ionic

Liquid

Solution

Question 7

298K

50K

200K

300K

Solution

Question 8

Neither A nor B

Both A and B.

Statement A

Statement B

Solution

Question 9

Water

Diamond

Sugar

Salt

Solution

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