Recent questions tagged ch13

Given the two statements below, which of the following responses that follow the statements is correct?

asked May 12, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:Internal energy of a gas must increase when temperature is increased}\\\text{Reason:Internal energy is a function of velocity of gas.}\end{array}$

asked May 12, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:A substance existing in the gaseous state at a temperature below its critical temperature is called a vapour and can be liquified by the application of pressure done.Above the critical temperature liquefaction is not possible by compression of gas and it is called a gas}\\\text{Reason:A triple point is the pressure and temperature point for a substance where all its 3 states coexist.}\end{array}$

asked May 12, 2014 by sreemathi.v

1 answer

Given the Assertion and Reason below, Choose one of the following responses $\begin{array}{1 1}\text{Assertion:The ratio }\large\frac{C_P}{C_V}\normalsize \text{ is more for helium than hydrogen.}\\\text{Reason:Atomic mass of helium is more than hydrogen.}\end{array}$

asked May 12, 2014 by sreemathi.v

1 answer

A tube sealed at both ends is 100cm long.It lies horizontally,the middle 0.1m containing mercury & 2 ends containing air at standard atmospheric pressure.If tube is turned to vertical position,what amount of mercury will be displaced?

asked May 12, 2014 by sreemathi.v

1 answer

An insulated container containing monoatomic gas of molar mass $m$ is moving with velocity $v_0$.If the container is suddenly stopped,find the change in temperature.

asked May 12, 2014 by sreemathi.v

1 answer

A box of $1m^3$ is filled with nitrogen at 1.5atm at 300K.The box has a hole of area $0.01mm^2$.How much time is required for pressure to reduce by 0.1atm.If pressure outside is 1atm

asked May 12, 2014 by sreemathi.v

1 answer

An air bubble is released from the bottom of a lake of depth 11m.The temperature at the bottom is $4^{\large\circ}C$ and that at the surface is $12^{\large\circ}C$.What is the ratio of bubble's radius at the surface and its radius at bottom?Assume density of heater is $100Kg/m^3$.Atmospheric pressure =$75$cm of Hg & density of mercury =$13600Kg/m^3$

asked May 12, 2014 by sreemathi.v

1 answer

A vertical cylinderical tank 1cm high has its top end closed by a tightly fitted frictionless piston of negligible weight.The air inside the cylinder is at an absolute pressure of 1atm.The piston is depressed by pouring mercury on it very slowly.How far will the piston before mercury spills on the top of cylinder?

asked May 12, 2014 by sreemathi.v

1 answer

A vessel A with a capacity $V_1=2lt$ contains gas at a pressure $P_1=2atm$ and a vessel B with a capacity of $V_2=4lt$ contains the same gas at a pressure of 1atm.The temperature is $0^{\large\circ}C$ in A & $27^{\large\circ}C$ in B.What will be the pressure in the vessels if they are connected by a tube?

asked May 12, 2014 by sreemathi.v

1 answer

A cubical box of side 1cm contains helium gas (atomic weight =4) at a pressure of $100N/s^2$.During an abservation time of 1sec,an atom travelling with a root mean square speed parallel to one of the edges of the cube was found to make 500 hits with the wall.Evaluate the temperature of the gas

asked May 12, 2014 by sreemathi.v

1 answer

Calculate the $V_{RMS}$ of organ atoms at room temperature $25^{\large\circ}$

asked May 12, 2014 by sreemathi.v

1 answer

At temperature T,N molecules of a gas A,each having mass m and at the same temperature,2N molecules of gas B each having mass 2m are filled in a container .$V_{RMS}$ of molecules of B is $V^2$ and $x$ component of $V_{RMS}$ of A is $\omega^2$.$\large\frac{\omega^2}{V^2}$ is

asked May 12, 2014 by sreemathi.v

1 answer

28gm of $N_2$ gas is contained in a flask at a pressure 10atm and at a temperature of $57^{\large\circ}$C.It is found that due to leakage in the flask,the pressure is reduced to half & temperature is reduced to $27^{\large\circ}$C.Quantity of $N_2$ leaked out

asked May 12, 2014 by sreemathi.v

1 answer

Which of the following curve represent ideal gas behaviour

asked May 12, 2014 by sreemathi.v

1 answer

Calculate the total degrees of freedom of /cc of hydrogen

asked May 12, 2014 by sreemathi.v

1 answer

A balloon has 5.0g mole of helium at $7^{\large\circ}C$.Calculate the total internal energy of the system

asked May 12, 2014 by sreemathi.v

1 answer

A vessel containing 1gm of oxygen at a pressure of 10atm a temperature of $47^{\large\circ}C$.It is found that because of a leak,the pressure drops to $\large\frac{5}{8}$th of its original value & temperature falls to 2x.Find the mass of oxygen that has leaked out.

asked May 12, 2014 by sreemathi.v

1 answer

What is the energy of the rotational motion of molecules contained in 1Kg of nitrogen at a temperature of $7^{\large\circ}C$

asked May 12, 2014 by sreemathi.v

1 answer

RMS speed of a monoatomic gas is increased by 2 times.If the process is done adiabatically then the ratio of initial volumes to final volume will be

asked May 12, 2014 by sreemathi.v

1 answer

N molecules of an ideal gas at temperature $T_1$ & pressure $P_1$ are contained in a closed box.If the molecules in the box get doubled,keeping total K.E same then if new pressure is $P_2$ & temperature is $T_2$ then

asked May 12, 2014 by sreemathi.v

1 answer

RMS velocity of $H_2$ at 300K is $1930m/s$.Rms velocity of $O_2$ at 1200K will be

asked May 12, 2014 by sreemathi.v

1 answer

The distance between gas molecules is doubled on constant temperature,then the pressure is

asked May 12, 2014 by sreemathi.v

1 answer

At constant pressure,hydrogen is having temperature of $327^{\large\circ}C$.Till what temperature is it to be cooled such that the rms velocity of its molecules becomes half of the earlier values

asked May 12, 2014 by sreemathi.v

1 answer

An oxygen storage tank has a capacity of $0.05m^3$.The gas pressure is 100atm.Determine the total K.E of gas.

asked May 12, 2014 by sreemathi.v

1 answer

If pressure and temperature of an ideal gas is doubled and volume is halved the number of molecules of gas:-

asked May 12, 2014 by sreemathi.v

1 answer

Temperature of $4 mol$ of an ideal gas occupying $5 dm^3$ at $3.32\; bar \; (R= 0.083\;bar \;dm^3 K)$

asked May 2, 2014 by meena.p

1 answer

$4g$ of $O_2$ gas has pressure $P_0$ ad temperature $T_o$ i a vessel . On keeping the Sample at $50^{\circ}\;C$ higher temperature, $1g$ gas is given ad to maintain the original pressure $P_0$ . Then $T_0=?$

asked May 2, 2014 by meena.p

1 answer

The r ms speed of the molecules of a ideal gas which is at a pressure $10^5 \;m^{-2}$ & density $45\;kgm^{-3}$ is _________

asked May 2, 2014 by meena.p

1 answer

Boltzmann curve is given below :

asked May 2, 2014 by meena.p

1 answer

The reason why $Cp$ is greater than $Cv$ is _______

asked May 2, 2014 by meena.p

1 answer

The graph of PV v/s T is plotted for $Co_2,H_2$ and $N_2$ samples of equal masses Then the correct statement is

asked May 2, 2014 by meena.p

1 answer

If $ f(x+y)=f(x).f(y)$ for all x and y and if $f(5)=2$ and $f'(0) =3$ find $f'(5)$

asked Apr 22, 2014 by meena.p

1 answer

Evaluate $\lim \limits _{x \to \pi/6} \large\frac{(\sqrt 3 \sin x - \cos x)}{(x-\pi/6)}$

asked Apr 22, 2014 by meena.p

1 answer

Evaluate $\lim \limits_{x \to 0} \bigg(\large\frac{x^3 \cot x}{1- \cos x} \bigg)$

asked Apr 22, 2014 by meena.p

1 answer

Evaluate $\lim \limits_{x \to 0} \bigg( \large\frac{\sin 2x+ \sin 6x}{\sin 5x -\sin 3x} \bigg)$

asked Apr 22, 2014 by meena.p

1 answer

Evaluate $\lim \limits_{x \to 2} \bigg( \large\frac{e^x-e^2}{x-2} \bigg)$

asked Apr 22, 2014 by meena.p

1 answer

Define $f(0)$ so that $f(x)=(x+1)^{\cot x}$ becomes continuous at $x=0$

asked Apr 22, 2014 by meena.p

1 answer

Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{x}{\sin^nx}$

asked Apr 16, 2014 by thanvigandhi_1

1 answer

Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $(x + \sec x)(x-\tan x)$

asked Apr 16, 2014 by thanvigandhi_1

1 answer

Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{x}{1+\tan x}$

asked Apr 16, 2014 by thanvigandhi_1

1 answer

Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{x^2 \cos \bigg( \Large\frac{\pi}{4}\bigg)}{\sin x}$

asked Apr 16, 2014 by thanvigandhi_1

1 answer

Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{4x+5 \sin x}{3x+7 \cos x}$

asked Apr 16, 2014 by thanvigandhi_1

1 answer

Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $(x+\cos x)(x-\tan x)$

asked Apr 16, 2014 by thanvigandhi_1

1 answer

Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $(x+\cos x)(x-\tan x)$

asked Apr 14, 2014 by thanvigandhi_1

0 answers

Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $(ax^2+\sin x) (p+q \: \cos x)$

asked Apr 14, 2014 by thanvigandhi_1

1 answer

Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $(x^2+1) \cos x$

asked Apr 14, 2014 by thanvigandhi_1

1 answer

Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $x^4(5 \sin x-3 \cos x)$

asked Apr 14, 2014 by thanvigandhi_1

1 answer

Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{\sin (x+a)}{ \cos x}$

asked Apr 14, 2014 by thanvigandhi_1

1 answer

Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $\large\frac{a+b \sin x}{c+d \cos x}$

asked Apr 14, 2014 by thanvigandhi_1

1 answer

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