|
Which of the liquids in each of the following pairs has higher vapour pressure:
|
|
1
|
3456
|
August 11, 2016
|
|
Which property of liquids is responsible for spherical shape of liquid drops?
|
|
0
|
2014
|
August 11, 2016
|
|
Explain the following :
|
|
1
|
1210
|
August 11, 2016
|
|
Calculate the total and average kinetic energy of 32 g of methane molecules at 27°C
|
|
0
|
8024
|
August 11, 2016
|
|
Draw Maxwell-Boltzmanris distribution curve and state the effect of temperature on distribution of velocities
|
|
0
|
1147
|
August 11, 2016
|
|
At what temperature will the root mean square velocity of S ${{O}_{2}}$ be same as that of methane at 27°C?
|
|
0
|
762
|
August 11, 2016
|
|
The average velocity of gas molecules is 400 m${{s}^{-1}}$.Calculate its r.m.s. velocity at the same temperature
|
|
0
|
5190
|
August 11, 2016
|
|
Derive the relation between average velocity, root mean square and most probable velocity
|
|
0
|
22641
|
August 11, 2016
|
|
Maxwell's distribution of velocities
|
|
0
|
743
|
August 11, 2016
|
|
Calculate root mean square and average velocity of C${{O}_{2}}$ at 1000°C
|
|
0
|
669
|
August 11, 2016
|
|
Calculate most probable speed of methane molecule at 27° C
|
|
0
|
3424
|
August 11, 2016
|
|
Calculate average velocity of nitrogen, at 1000° C
|
|
0
|
754
|
August 11, 2016
|
|
Calculate the root mean square speed of oxygen molecule at 27° C
|
|
0
|
15677
|
August 11, 2016
|
|
Melting point is a rough measure of the attractive forces in solids
|
|
1
|
583
|
August 11, 2016
|
|
Explain the physical significance of van der Waal's parameters
|
|
0
|
6485
|
August 11, 2016
|
|
Critical temperature for carbon dioxide and methane are 31.1°C and - 81.9°C respectively. Which of these has stronger intermolecular forces and why?
|
|
0
|
1960
|
August 11, 2016
|
|
What is the relationship between the three types of molecular speeds at a given temperature?
|
|
0
|
839
|
August 11, 2016
|
|
Under what conditions of temperature and pressure do real gases tend to show ideal gas behaviour?
|
|
0
|
3229
|
August 11, 2016
|
|
A student forgot to add the reaction mixture to the round bottomed flask at 27°C,
|
|
1
|
2288
|
August 11, 2016
|
|
2.9 g of a gas at 95°C occupied the same volume as 0.184 g of hydrogen at 17°C, at the same pressure. What is the molar mass of the gas?
|
|
0
|
4571
|
August 11, 2016
|
|
Pay load is defined as the difference between the mass of displaced air and the mass of the balloon
|
|
1
|
3238
|
August 11, 2016
|
|
The drain cleaner Drainex contains small bits of aluminium which reacts with caustic soda to produce dihydrogen gas. What volume of dihydrogen at 20°C and 1 bar will be released when 0.15 g of aluminium reacts?
|
|
0
|
1440
|
August 11, 2016
|
|
Explain the following statements:
|
|
1
|
727
|
August 11, 2016
|
|
Which type of intermolecular forces exist between NaCl & ${{H}_{2}}$O
|
|
1
|
2306
|
August 11, 2016
|
|
A sample of nitrogen gas occupies a volume of 1.000 L at a pressure of 0.500 atm at 40°C. Calculate the pressure if the gas is compressed at 0.225 c${{m}^{2}}$ at - 6°C
|
|
0
|
7938
|
August 11, 2016
|
|
A sample of helium has a volume of 500 c${{m}^{3}}$ at 373 K. Calculate the temperature at which the volume will become 260 c${{m}^{3}}$. Assume that the pressure is constant
|
|
0
|
746
|
August 11, 2016
|
|
A weather ballon has a volume of 175 L when filled with hydrogen at a pressure of 100 atm
|
|
1
|
3079
|
August 11, 2016
|
|
5 L of nitrogen measured at 750 mm have, to be compressed into an iron cylinder of 1.0 L capacity. If the temperature is kept constant, calculate pres¬sure in atm. required to do so
|
|
0
|
1048
|
August 11, 2016
|
|
Calculate the volume of a sample of oxygen at a pressure of 2.50 atm, if its volume is 3.15 L at 1.00 atm
|
|
0
|
2121
|
August 11, 2016
|
|
Calculate the total pressure in a mixture of 8g of dioxygen and 4 g of dihydrogen confined in a vessel of 1 d${{m}^{3}}$ at 27°C. R = 0.083 bar d${{m}^{3}}$${{K}^{-1}}$${{mol}^{-1}}$
|
|
0
|
11974
|
August 11, 2016
|