Question 1

The difference between volume and pressure coefficients of an ideal gas is :

Accepted Answer

Volume coefficient:  \alpha Pressure coefficient:  \beta \alpha=\beta=\frac{1}{273}

Question 2

A sealed glass jar is full of water. When it is kept in a freezing mixture, it is broken because :

Accepted Answer

Anomalous expansion of water occurs when cooled from  4^0 C to  0^0 C.Hence, the sealed glass jar will be broken.

Question 3

List - I                                           List - IIa. Temperature of water          e.273 Kat the bottom of a lakeb. \gamma _{r} of water is - ve                    f. 277 Kbetweenc.  \gamma _{r}  of water is positive            g. above 277 Kd. Temperature of water           h. 273K andjust below ice layer in                277 Ka Lake

Accepted Answer

Water has maximum density at  4^{\circ}C=277K . Hence water at this temperature is settled at the bottom.Below this temperature, liquid water has negative coefficient of expansion. Hence as ice is melted, the volume of water initially decreases.

Question 4

The gas law  \left [ \dfrac{PV}{T} \right ]=  constant is true for

Accepted Answer

The given relation is always valid for ideal gas whether the process is adiabatic or isothermal because its the fundamental equation of ideal gas. P 	imes V=n 	imes R 	imes T

Question 5

Water at  4^{0} C is filled to the brim of 2 beakers. A boy performed an experiment A of heating and B of cooling. The observation was :

Accepted Answer

Water has anomalous expansion from  4^0 C to  0^0 C. Water expands when heated from  4^0 C onwards.Since water expands in both the cases, it will overflow from both experiments A and B.

Question 6

The P-T graph for the given mass of an ideal gas is shown in figure. Then the volume

Accepted Answer

From the graph it is clear that P is directly proportional to T. For an ideal gas it happens, when volume remains constant.

Question 7

A gas in an airtight container is heated from 25 ^{o} C to 90 ^{o} C. The density of gas will :

Accepted Answer

Since the container is airtight, volume will remain same, hence the density will remain same.

Question 8

A sealed glass jar is full of water. When its temperature is decreased to  0^{o}C  :

Accepted Answer

From  4^0 C to  0^0 C water will expand. while ice is getting formed.Hence, the glass jar will break.

Question 9

The molar gas constant is the same for all gases because at the same temperature and pressure, equal volumes of gases have the same :

Accepted Answer

We know,  R=\frac { PV }{ nT }  assuming P,V and T to be constant.Also we know, that equal volume of gases contain equal number of molecules, hence the value of R is also constant.

Question 10

If the volume of the gas is to be increased by 4 times :

Accepted Answer

PV=RT At constant pressure temp has to be increased by 4 times to increase volume by 4 times.

Thermal Properties Of Matter

Physics
620 Views

The difference between volume and pressure coefficients of an ideal gas is :

A sealed glass jar is full of water. When it is kept in a freezing mixture, it is broken because :

The gas law $[\frac{P V}{T}] =$ constant is true for

Water at $4^{0}$ C is filled to the brim of 2 beakers. A boy performed an experiment A of heating and B of cooling. The observation was :

The P-T graph for the given mass of an ideal gas is shown in figure. Then the volume

A gas in an airtight container is heated from 25 $^{o}$ C to 90 $^{o}$ C. The density of gas will :

A sealed glass jar is full of water. When its temperature is decreased to $0^{o} C$ :

The molar gas constant is the same for all gases because at the same temperature and pressure, equal volumes of gases have the same :

If the volume of the gas is to be increased by 4 times :

Thermal Properties Of Matter

Physics 620 Views

The difference between volume and pressure coefficients of an ideal gas is :

A sealed glass jar is full of water. When it is kept in a freezing mixture, it is broken because :

List - I List - IIa. Temperature of water e.273 Kat the bottom of a lakeb.γr​of water is - ve f. 277 Kbetweenc. γr​ of water is positive g. above 277 Kd. Temperature of water h. 273K andjust below ice layer in 277 Ka Lake

The gas law [TPV​]= constant is true for

Water at 40C is filled to the brim of 2 beakers. A boy performed an experiment A of heating and B of cooling. The observation was :

The P-T graph for the given mass of an ideal gas is shown in figure. Then the volume

A gas in an airtight container is heated from 25oC to 90oC. The density of gas will :

A sealed glass jar is full of water. When its temperature is decreased to 0oC :

The molar gas constant is the same for all gases because at the same temperature and pressure, equal volumes of gases have the same :

If the volume of the gas is to be increased by 4 times :

Physics
620 Views

List - I List - II
a. Temperature of water e.273 K
at the bottom of a lake
b. $γ_{r}$ of water is - ve f. 277 K
between
c. $γ_{r}$ of water is positive g. above 277 K
d. Temperature of water h. 273K and
just below ice layer in 277 K
a Lake

The gas law $[\frac{P V}{T}] =$ constant is true for

Water at $4^{0}$ C is filled to the brim of 2 beakers. A boy performed an experiment A of heating and B of cooling. The observation was :

A gas in an airtight container is heated from 25 $^{o}$ C to 90 $^{o}$ C. The density of gas will :

A sealed glass jar is full of water. When its temperature is decreased to $0^{o} C$ :