146419
The resistance of a metal increases with increasing temperature because
1 The collisions of the conducting electrons with the electrons increase
2 The collision of the conducting electrons with the lattice consisting of the ions of the metal increase
3 The number of conduction electrons decreases
4 The number of conduction electrons increases
Explanation:
B Exp: The resistance of a metal increases with increasing temperature because the collision of the conducting electrons with the lattice consisting of the ions of the metal increase.
VITEEE-2008
Thermal Properties of Matter
146421
Consider $1 \mathrm{~cm}^{3}$ of air at absolute temperature $T$ at sea level and other $1 \mathrm{~cm}^{3}$ of air at a height where the pressure is one third atmosphere. The absolute temperature of the sample at that height is
1 $\mathrm{T}$
2 $\frac{\mathrm{T}}{3}$
3 $\frac{2 \mathrm{~T}}{3}$
4 Cannot be determined in terms of $\mathrm{T}$ from the above data
Explanation:
D The amount of the gas is not given. That's why we cannot be determined in terms of $T$ from the above data.
SCRA-2015
Thermal Properties of Matter
146424
In anomalous expansion of water, at what temperature, the density of water is maximum?
1 $4^{0} \mathrm{C}$
2 $ \lt 4^{0} \mathrm{C}$
3 $>4^{0} \mathrm{C}$
4 $10^{\circ} \mathrm{C}$
Explanation:
A When cooled from room temperature liquid water becomes dense as with other substances. Water never has an absolute density because its density varies with temperature. Water has its maximum density of $1 \mathrm{~g} / \mathrm{cm}^{3}$ at $4^{\circ} \mathrm{C}$.
Karnataka CET-2014
Thermal Properties of Matter
146435
A beaker is completely filled with water at $4^{\circ} \mathrm{C}$. It will over flow
1 When cooled but not when heated
2 When heated but not when cooled
3 Both when heated or cooled
4 Neither when heated nor when cooled
Explanation:
C Water has the least volume of $4^{\circ} \mathrm{C}$. So, if the water is heated above $4^{\circ} \mathrm{C}$ or cooled below $4^{\circ} \mathrm{C}$, then density decreases. Hence, it expands and overflow in both case.
146419
The resistance of a metal increases with increasing temperature because
1 The collisions of the conducting electrons with the electrons increase
2 The collision of the conducting electrons with the lattice consisting of the ions of the metal increase
3 The number of conduction electrons decreases
4 The number of conduction electrons increases
Explanation:
B Exp: The resistance of a metal increases with increasing temperature because the collision of the conducting electrons with the lattice consisting of the ions of the metal increase.
VITEEE-2008
Thermal Properties of Matter
146421
Consider $1 \mathrm{~cm}^{3}$ of air at absolute temperature $T$ at sea level and other $1 \mathrm{~cm}^{3}$ of air at a height where the pressure is one third atmosphere. The absolute temperature of the sample at that height is
1 $\mathrm{T}$
2 $\frac{\mathrm{T}}{3}$
3 $\frac{2 \mathrm{~T}}{3}$
4 Cannot be determined in terms of $\mathrm{T}$ from the above data
Explanation:
D The amount of the gas is not given. That's why we cannot be determined in terms of $T$ from the above data.
SCRA-2015
Thermal Properties of Matter
146424
In anomalous expansion of water, at what temperature, the density of water is maximum?
1 $4^{0} \mathrm{C}$
2 $ \lt 4^{0} \mathrm{C}$
3 $>4^{0} \mathrm{C}$
4 $10^{\circ} \mathrm{C}$
Explanation:
A When cooled from room temperature liquid water becomes dense as with other substances. Water never has an absolute density because its density varies with temperature. Water has its maximum density of $1 \mathrm{~g} / \mathrm{cm}^{3}$ at $4^{\circ} \mathrm{C}$.
Karnataka CET-2014
Thermal Properties of Matter
146435
A beaker is completely filled with water at $4^{\circ} \mathrm{C}$. It will over flow
1 When cooled but not when heated
2 When heated but not when cooled
3 Both when heated or cooled
4 Neither when heated nor when cooled
Explanation:
C Water has the least volume of $4^{\circ} \mathrm{C}$. So, if the water is heated above $4^{\circ} \mathrm{C}$ or cooled below $4^{\circ} \mathrm{C}$, then density decreases. Hence, it expands and overflow in both case.
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Thermal Properties of Matter
146419
The resistance of a metal increases with increasing temperature because
1 The collisions of the conducting electrons with the electrons increase
2 The collision of the conducting electrons with the lattice consisting of the ions of the metal increase
3 The number of conduction electrons decreases
4 The number of conduction electrons increases
Explanation:
B Exp: The resistance of a metal increases with increasing temperature because the collision of the conducting electrons with the lattice consisting of the ions of the metal increase.
VITEEE-2008
Thermal Properties of Matter
146421
Consider $1 \mathrm{~cm}^{3}$ of air at absolute temperature $T$ at sea level and other $1 \mathrm{~cm}^{3}$ of air at a height where the pressure is one third atmosphere. The absolute temperature of the sample at that height is
1 $\mathrm{T}$
2 $\frac{\mathrm{T}}{3}$
3 $\frac{2 \mathrm{~T}}{3}$
4 Cannot be determined in terms of $\mathrm{T}$ from the above data
Explanation:
D The amount of the gas is not given. That's why we cannot be determined in terms of $T$ from the above data.
SCRA-2015
Thermal Properties of Matter
146424
In anomalous expansion of water, at what temperature, the density of water is maximum?
1 $4^{0} \mathrm{C}$
2 $ \lt 4^{0} \mathrm{C}$
3 $>4^{0} \mathrm{C}$
4 $10^{\circ} \mathrm{C}$
Explanation:
A When cooled from room temperature liquid water becomes dense as with other substances. Water never has an absolute density because its density varies with temperature. Water has its maximum density of $1 \mathrm{~g} / \mathrm{cm}^{3}$ at $4^{\circ} \mathrm{C}$.
Karnataka CET-2014
Thermal Properties of Matter
146435
A beaker is completely filled with water at $4^{\circ} \mathrm{C}$. It will over flow
1 When cooled but not when heated
2 When heated but not when cooled
3 Both when heated or cooled
4 Neither when heated nor when cooled
Explanation:
C Water has the least volume of $4^{\circ} \mathrm{C}$. So, if the water is heated above $4^{\circ} \mathrm{C}$ or cooled below $4^{\circ} \mathrm{C}$, then density decreases. Hence, it expands and overflow in both case.
146419
The resistance of a metal increases with increasing temperature because
1 The collisions of the conducting electrons with the electrons increase
2 The collision of the conducting electrons with the lattice consisting of the ions of the metal increase
3 The number of conduction electrons decreases
4 The number of conduction electrons increases
Explanation:
B Exp: The resistance of a metal increases with increasing temperature because the collision of the conducting electrons with the lattice consisting of the ions of the metal increase.
VITEEE-2008
Thermal Properties of Matter
146421
Consider $1 \mathrm{~cm}^{3}$ of air at absolute temperature $T$ at sea level and other $1 \mathrm{~cm}^{3}$ of air at a height where the pressure is one third atmosphere. The absolute temperature of the sample at that height is
1 $\mathrm{T}$
2 $\frac{\mathrm{T}}{3}$
3 $\frac{2 \mathrm{~T}}{3}$
4 Cannot be determined in terms of $\mathrm{T}$ from the above data
Explanation:
D The amount of the gas is not given. That's why we cannot be determined in terms of $T$ from the above data.
SCRA-2015
Thermal Properties of Matter
146424
In anomalous expansion of water, at what temperature, the density of water is maximum?
1 $4^{0} \mathrm{C}$
2 $ \lt 4^{0} \mathrm{C}$
3 $>4^{0} \mathrm{C}$
4 $10^{\circ} \mathrm{C}$
Explanation:
A When cooled from room temperature liquid water becomes dense as with other substances. Water never has an absolute density because its density varies with temperature. Water has its maximum density of $1 \mathrm{~g} / \mathrm{cm}^{3}$ at $4^{\circ} \mathrm{C}$.
Karnataka CET-2014
Thermal Properties of Matter
146435
A beaker is completely filled with water at $4^{\circ} \mathrm{C}$. It will over flow
1 When cooled but not when heated
2 When heated but not when cooled
3 Both when heated or cooled
4 Neither when heated nor when cooled
Explanation:
C Water has the least volume of $4^{\circ} \mathrm{C}$. So, if the water is heated above $4^{\circ} \mathrm{C}$ or cooled below $4^{\circ} \mathrm{C}$, then density decreases. Hence, it expands and overflow in both case.