Related InterviewSolutions

• Assertion (A): The Joules -Thomon coefficient for an ideal gas is zero. Reason (R ) : There are no intermlecular attactive forces in an ideal gas.A. If both the statement are TRUE and STATEMENT-2 is the correct explanation of STATEMENT-1B. If both the statement are TRUE but STATEMENT-2 is NOT the correct explanation of STATEMENT-1C. If STATEMENT-1 is TRUE and STATEMENT-2 is FALSED. If STATEMENT-1 is FALSE and STATEMENT-2 is TRUE
• A tightly sealed `25.0` litre acetone drum was found to have `15.4` litre acetone (l) at `780mm` hg pressure and `18^(@)C` Sudddenly during transportaion the drum was dented and its internal volume was found th decrease by `4.6` litre If vapour pressure of acetone at `18^(@)C` is `400mm` of Hg calculate the pressure inside the drum after denting .
• 0.5 L of evacuated container is filled by gas upto 1 atm exactly, by connecting it to 20 litre cylinder initially at 1.2 atm. How many evacuated containers can be filled ?
• A vessel containing water is put in a dry sealed room of volume `76 m^(3)` at `15^(@)C` The saturation vapour pressure of water is 15 mm of Hg at `15^(@)C` How much water will evaportate before the water is in equilibrium with the vapour ? .
• A desiccator of internal volume one litre containing `N_(2)` at 1 atm is partially evacuated to final pressure of `78mm` of Hg while `T` remains constant What is the volume of gas at this stage ? (b) A lungful of air `(3.55 cm^(3))` is exhaled into a machine that measures lung capcity if the air is exhaled from lungs at a pressure of `1.08` atm at `37^(@)C` but the machine is a ambient conditions of `0.958` atm and `23^(@)C` what is the volume of air measured by the machine ? .
• Density of methane , at `250^(@)C` and 6 atm pressure, is `[R=0.0821 atm ] :`A. `2.236 g//L`B. `8 g//L`C. `12 g//L`D. `16 g //L`
• 6 litres of `H_(2)O` is placed in a closed room of volume 827 litre and temperature at 300K if vapour pressure of liquid water is `22.8` mm of Hg at 300K and its density is ` 1gm//cm^(3)` Then: [Given R=0.0821 `L-atm//mole-K` assuming volume of liquid water to be constant] `{:(,"Column-I",,"Column-II"),("(P)","Mass of "H_(2)O" in gaseous state "(gm),,(1)1/2),("(Q)","Moles of "H_(2)O" in gaseous state "("in moles"),,(2)18),("(R)","Total number of moles of oxygen gas that can be obtained from vapour form of "H_(2)O,,(3)3),("(S)","Total number of moles of all atoms from water in vapour form",,(4)1):}`A. `{:("P Q R S"),("1 2 4 3"):}`B. `{:("P Q R S"),("4 3 2 1"):}`C. `{:("P Q R S"),("2 4 1 3"):}`D. `{:("P Q R S"),("1 2 3 4"):}`
• Calculate the weight of `N_(2)` in `6.24` litre cylinder at `27^(@)C` and `750 mm hg` `(R =0.0821` litre atm `K^(-1) mol^(-1))` .
• On litre flask contains air, water vapour and a small amount of liquid water at a pressure of 200 mm Hg. If this is connected to another one litre evacuated flask, what will be the final pressure of the gas mixture at equilibrium ? Assume `T = 50^(@)C`, aqueous tension at `50^(@)C` is 93 mm Hg. Give answer excluding the decimal places.
• A flask contains a mixture of Ne(g) and Ar(g). There are 0.250 mol of Ne(g) which exerts a pressure of 205 mm Hg. If the Ar(g) exerts a pressure of 492 mmHg, what mass pf Ar(g) is in the flask? (Ar=40)A. 4.16gB. 12.1gC. 24.0gD. 95.9g