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Physics

Grade-9

Easy

Question

What does the following image show?

Boiling
Melting
Condensation
Freezing

hint Hint:

Matter can change its state upon heating or cooling.

The correct answer is: Condensation

Condensation is the process of conversion of steam into liquid.

When the hot water vapours touch the cold glass, they condense into water.

Related Questions to study

Copper converts to its liquid form at 1085 degrees Celsius, which is its _____.

Copper converts to its liquid form at 1085 degrees Celsius, which is its _____.

The boiling point of nitrogen is 77.36 K. Its state at – 173 degrees Celsius is ___.

The boiling point of nitrogen is 77.36 K. Its state at – 173 degrees Celsius is ___.

The boiling point of alcohol is 78.37^o Celsius. What is the state of alcohol at 79^o Celsius?

The boiling point of alcohol is 78.37^o Celsius. What is the state of alcohol at 79^o Celsius?

parallel

Mercury freezes at around -38.33^o Celsius. What is the state of mercury at 30^o Celsius?

Mercury freezes at around -38.33^o Celsius. What is the state of mercury at 30^o Celsius?

When a solid is converted to a liquid, its temperature _____.

When a solid is converted to a liquid, its temperature _____.

Steam condenses on _____ its temperature.

Steam condenses on _____ its temperature.

parallel

The melting point of ice is ____.

The melting point of ice is ____.

The state of a substance changes on ____.

The state of a substance changes on ____.

The temperature at which a substance boils is called its _____.

The temperature at which a substance boils is called its _____.

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_____ can exist in all the states of matter.

_____ can exist in all the states of matter.

The coefficient of thermal expansion of a material determines ____.

The coefficient of thermal expansion of a material determines ____.

When the temperature of a liquid decreases, its constituent particles ____.

When the temperature of a liquid decreases, its constituent particles ____.

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As a result of thermal expansion, solids experience a change in _____.

As a result of thermal expansion, solids experience a change in _____.

Given below is a table showing the values of the coefficients of thermal expansions of some materials. Answer the question based on the table.
A bronze and a silver rod are heated to increase their temperatures by the same amounts. Which of them would expand more?

Substance Coefficient of Expansion Per Degree Centigrade

$text Aluminium end text$ $25 cross times 10 to the power of negative 6 end exponent$

$text Brass or Bronze end text$ $19 cross times 10 to the power of negative 6 end exponent$

$text Brick end text$ $9 cross times 10 to the power of negative 6 end exponent$

$text Copper end text$ $17 cross times 10 to the power of negative 6 end exponent$

$text Glass (Plate) end text$ $9 cross times 10 to the power of negative 6 end exponent$

$text Glass (Pyrex) end text$ $3 cross times 10 to the power of negative 6 end exponent$

$text Iron or Steel end text$ $11 cross times 10 to the power of negative 6 end exponent$

$text Lead end text$ $29 cross times 10 to the power of negative 6 end exponent$

$text Quartz end text$ $0.4 cross times 10 to the power of negative 6 end exponent$

$text Silver end text$ $19 cross times 10 to the power of negative 6 end exponent$

Given below is a table showing the values of the coefficients of thermal expansions of some materials. Answer the question based on the table.
A bronze and a silver rod are heated to increase their temperatures by the same amounts. Which of them would expand more?

Substance Coefficient of Expansion Per Degree Centigrade

$text Aluminium end text$ $25 cross times 10 to the power of negative 6 end exponent$

$text Brass or Bronze end text$ $19 cross times 10 to the power of negative 6 end exponent$

$text Brick end text$ $9 cross times 10 to the power of negative 6 end exponent$

$text Copper end text$ $17 cross times 10 to the power of negative 6 end exponent$

$text Glass (Plate) end text$ $9 cross times 10 to the power of negative 6 end exponent$

$text Glass (Pyrex) end text$ $3 cross times 10 to the power of negative 6 end exponent$

$text Iron or Steel end text$ $11 cross times 10 to the power of negative 6 end exponent$

$text Lead end text$ $29 cross times 10 to the power of negative 6 end exponent$

$text Quartz end text$ $0.4 cross times 10 to the power of negative 6 end exponent$

$text Silver end text$ $19 cross times 10 to the power of negative 6 end exponent$

Given below is a table showing the values of the coefficients of thermal expansions of some materials. Answer the question based on the table.
Sagar is provided with a brass rod and a lead rod of identical dimensions. He heats the rods through the same temperature increase. Which rod would expand more?

Substance Coefficient of Expansion Per Degree Centigrade

$text Aluminium end text$ $25 cross times 10 to the power of negative 6 end exponent$

$text Brass or Bronze end text$ $19 cross times 10 to the power of negative 6 end exponent$

$text Brick end text$ $9 cross times 10 to the power of negative 6 end exponent$

$text Copper end text$ $17 cross times 10 to the power of negative 6 end exponent$

$text Glass (Plate) end text$ $9 cross times 10 to the power of negative 6 end exponent$

$text Glass (Pyrex) end text$ $3 cross times 10 to the power of negative 6 end exponent$

$text Iron or Steel end text$ $11 cross times 10 to the power of negative 6 end exponent$

$text Lead end text$ $29 cross times 10 to the power of negative 6 end exponent$

$text Quartz end text$ $0.4 cross times 10 to the power of negative 6 end exponent$

$text Silver end text$ $19 cross times 10 to the power of negative 6 end exponent$

Given below is a table showing the values of the coefficients of thermal expansions of some materials. Answer the question based on the table.
Sagar is provided with a brass rod and a lead rod of identical dimensions. He heats the rods through the same temperature increase. Which rod would expand more?

Substance Coefficient of Expansion Per Degree Centigrade

$text Aluminium end text$ $25 cross times 10 to the power of negative 6 end exponent$

$text Brass or Bronze end text$ $19 cross times 10 to the power of negative 6 end exponent$

$text Brick end text$ $9 cross times 10 to the power of negative 6 end exponent$

$text Copper end text$ $17 cross times 10 to the power of negative 6 end exponent$

$text Glass (Plate) end text$ $9 cross times 10 to the power of negative 6 end exponent$

$text Glass (Pyrex) end text$ $3 cross times 10 to the power of negative 6 end exponent$

$text Iron or Steel end text$ $11 cross times 10 to the power of negative 6 end exponent$

$text Lead end text$ $29 cross times 10 to the power of negative 6 end exponent$

$text Quartz end text$ $0.4 cross times 10 to the power of negative 6 end exponent$

$text Silver end text$ $19 cross times 10 to the power of negative 6 end exponent$

parallel

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