Thermal Expansion
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PHXI11:THERMAL PROPERTIES OF MATTER

366819 Assertion :
Water expands both when heated or cooled from \(4{ }^{\circ} \mathrm{C}\).
Reason :
Density of water is minimum at \(4{ }^{\circ} \mathrm{C}\).

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI11:THERMAL PROPERTIES OF MATTER

366820 A solid body of linear expansion coefficient \(2 \times {10^{ - 5}}{\left( {^\circ C} \right)^{ - 1}}\) floats in a liquid with \(20 \%\) of its volume out of the liquid at a temperature \(20^\circ C\). The volumetric expansion coefficient of liquid is 3 times that of the solid body's volumetric expansion coefficient. If the temperature is increased to \(70^\circ C\), the new dfraction of the body's volume out of the liquid will be approximately;

1 \(19.7 \%\)
2 \(20.1 \%\)
3 \(19.5 \%\)
4 \(20.7 \%\)
PHXI11:THERMAL PROPERTIES OF MATTER

366821 The coefficient of volume expansion of glycerine is \(49 \times 10^{-5} / K\). What is the fractional change in its density for a \(30^\circ C\) rise in temperature?

1 \(1.45 \times 10^{-3}\)
2 \(2.45 \times 10^{-3}\)
3 \(2.45 \times 10^{-2}\)
4 \(1.45 \times 10^{-2}\)
NCERT Exempler
PHXI11:THERMAL PROPERTIES OF MATTER

366822 Why does a glass beaker sometimes break, if we quickly pour boiling water into it?

1 Hot water expands, pushing the glass out
2 The hot water cools when it touches the glass, shrinking and pulling the glass in
3 The glass becomes hot and expands causing the molecules to break
4 The inside of the glass expands faster than the outside of the glass, causing the glass to break
PHXI11:THERMAL PROPERTIES OF MATTER

366823 Water has maximum density at

1 \(0^\circ C\)
2 \(4^\circ C\)
3 \(25^\circ C\)
4 \(37^\circ C\)
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PHXI11:THERMAL PROPERTIES OF MATTER

366819 Assertion :
Water expands both when heated or cooled from \(4{ }^{\circ} \mathrm{C}\).
Reason :
Density of water is minimum at \(4{ }^{\circ} \mathrm{C}\).

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI11:THERMAL PROPERTIES OF MATTER

366820 A solid body of linear expansion coefficient \(2 \times {10^{ - 5}}{\left( {^\circ C} \right)^{ - 1}}\) floats in a liquid with \(20 \%\) of its volume out of the liquid at a temperature \(20^\circ C\). The volumetric expansion coefficient of liquid is 3 times that of the solid body's volumetric expansion coefficient. If the temperature is increased to \(70^\circ C\), the new dfraction of the body's volume out of the liquid will be approximately;

1 \(19.7 \%\)
2 \(20.1 \%\)
3 \(19.5 \%\)
4 \(20.7 \%\)
PHXI11:THERMAL PROPERTIES OF MATTER

366821 The coefficient of volume expansion of glycerine is \(49 \times 10^{-5} / K\). What is the fractional change in its density for a \(30^\circ C\) rise in temperature?

1 \(1.45 \times 10^{-3}\)
2 \(2.45 \times 10^{-3}\)
3 \(2.45 \times 10^{-2}\)
4 \(1.45 \times 10^{-2}\)
NCERT Exempler
PHXI11:THERMAL PROPERTIES OF MATTER

366822 Why does a glass beaker sometimes break, if we quickly pour boiling water into it?

1 Hot water expands, pushing the glass out
2 The hot water cools when it touches the glass, shrinking and pulling the glass in
3 The glass becomes hot and expands causing the molecules to break
4 The inside of the glass expands faster than the outside of the glass, causing the glass to break
PHXI11:THERMAL PROPERTIES OF MATTER

366823 Water has maximum density at

1 \(0^\circ C\)
2 \(4^\circ C\)
3 \(25^\circ C\)
4 \(37^\circ C\)
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PHXI11:THERMAL PROPERTIES OF MATTER

366819 Assertion :
Water expands both when heated or cooled from \(4{ }^{\circ} \mathrm{C}\).
Reason :
Density of water is minimum at \(4{ }^{\circ} \mathrm{C}\).

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI11:THERMAL PROPERTIES OF MATTER

366820 A solid body of linear expansion coefficient \(2 \times {10^{ - 5}}{\left( {^\circ C} \right)^{ - 1}}\) floats in a liquid with \(20 \%\) of its volume out of the liquid at a temperature \(20^\circ C\). The volumetric expansion coefficient of liquid is 3 times that of the solid body's volumetric expansion coefficient. If the temperature is increased to \(70^\circ C\), the new dfraction of the body's volume out of the liquid will be approximately;

1 \(19.7 \%\)
2 \(20.1 \%\)
3 \(19.5 \%\)
4 \(20.7 \%\)
PHXI11:THERMAL PROPERTIES OF MATTER

366821 The coefficient of volume expansion of glycerine is \(49 \times 10^{-5} / K\). What is the fractional change in its density for a \(30^\circ C\) rise in temperature?

1 \(1.45 \times 10^{-3}\)
2 \(2.45 \times 10^{-3}\)
3 \(2.45 \times 10^{-2}\)
4 \(1.45 \times 10^{-2}\)
NCERT Exempler
PHXI11:THERMAL PROPERTIES OF MATTER

366822 Why does a glass beaker sometimes break, if we quickly pour boiling water into it?

1 Hot water expands, pushing the glass out
2 The hot water cools when it touches the glass, shrinking and pulling the glass in
3 The glass becomes hot and expands causing the molecules to break
4 The inside of the glass expands faster than the outside of the glass, causing the glass to break
PHXI11:THERMAL PROPERTIES OF MATTER

366823 Water has maximum density at

1 \(0^\circ C\)
2 \(4^\circ C\)
3 \(25^\circ C\)
4 \(37^\circ C\)
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PHXI11:THERMAL PROPERTIES OF MATTER

366819 Assertion :
Water expands both when heated or cooled from \(4{ }^{\circ} \mathrm{C}\).
Reason :
Density of water is minimum at \(4{ }^{\circ} \mathrm{C}\).

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI11:THERMAL PROPERTIES OF MATTER

366820 A solid body of linear expansion coefficient \(2 \times {10^{ - 5}}{\left( {^\circ C} \right)^{ - 1}}\) floats in a liquid with \(20 \%\) of its volume out of the liquid at a temperature \(20^\circ C\). The volumetric expansion coefficient of liquid is 3 times that of the solid body's volumetric expansion coefficient. If the temperature is increased to \(70^\circ C\), the new dfraction of the body's volume out of the liquid will be approximately;

1 \(19.7 \%\)
2 \(20.1 \%\)
3 \(19.5 \%\)
4 \(20.7 \%\)
PHXI11:THERMAL PROPERTIES OF MATTER

366821 The coefficient of volume expansion of glycerine is \(49 \times 10^{-5} / K\). What is the fractional change in its density for a \(30^\circ C\) rise in temperature?

1 \(1.45 \times 10^{-3}\)
2 \(2.45 \times 10^{-3}\)
3 \(2.45 \times 10^{-2}\)
4 \(1.45 \times 10^{-2}\)
NCERT Exempler
PHXI11:THERMAL PROPERTIES OF MATTER

366822 Why does a glass beaker sometimes break, if we quickly pour boiling water into it?

1 Hot water expands, pushing the glass out
2 The hot water cools when it touches the glass, shrinking and pulling the glass in
3 The glass becomes hot and expands causing the molecules to break
4 The inside of the glass expands faster than the outside of the glass, causing the glass to break
PHXI11:THERMAL PROPERTIES OF MATTER

366823 Water has maximum density at

1 \(0^\circ C\)
2 \(4^\circ C\)
3 \(25^\circ C\)
4 \(37^\circ C\)
Join With Us for More Updates
PHXI11:THERMAL PROPERTIES OF MATTER

366819 Assertion :
Water expands both when heated or cooled from \(4{ }^{\circ} \mathrm{C}\).
Reason :
Density of water is minimum at \(4{ }^{\circ} \mathrm{C}\).

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
PHXI11:THERMAL PROPERTIES OF MATTER

366820 A solid body of linear expansion coefficient \(2 \times {10^{ - 5}}{\left( {^\circ C} \right)^{ - 1}}\) floats in a liquid with \(20 \%\) of its volume out of the liquid at a temperature \(20^\circ C\). The volumetric expansion coefficient of liquid is 3 times that of the solid body's volumetric expansion coefficient. If the temperature is increased to \(70^\circ C\), the new dfraction of the body's volume out of the liquid will be approximately;

1 \(19.7 \%\)
2 \(20.1 \%\)
3 \(19.5 \%\)
4 \(20.7 \%\)
PHXI11:THERMAL PROPERTIES OF MATTER

366821 The coefficient of volume expansion of glycerine is \(49 \times 10^{-5} / K\). What is the fractional change in its density for a \(30^\circ C\) rise in temperature?

1 \(1.45 \times 10^{-3}\)
2 \(2.45 \times 10^{-3}\)
3 \(2.45 \times 10^{-2}\)
4 \(1.45 \times 10^{-2}\)
NCERT Exempler
PHXI11:THERMAL PROPERTIES OF MATTER

366822 Why does a glass beaker sometimes break, if we quickly pour boiling water into it?

1 Hot water expands, pushing the glass out
2 The hot water cools when it touches the glass, shrinking and pulling the glass in
3 The glass becomes hot and expands causing the molecules to break
4 The inside of the glass expands faster than the outside of the glass, causing the glass to break
PHXI11:THERMAL PROPERTIES OF MATTER

366823 Water has maximum density at

1 \(0^\circ C\)
2 \(4^\circ C\)
3 \(25^\circ C\)
4 \(37^\circ C\)