Related Questions
What is the correct answer?
4
7.Which of the following sets of conditions represent the easiest way to liquefy a gas?
A. Low temperature and high pressure
B. High temperature and low pressure
C. High temperature and low pressure
What is the correct answer?
4
The space occupied by spheres in ccp arrangement is
What is the correct answer?
4
The average kinetic energy of the molecule of (moL wt. = 64) at 27°C is E. Then the average kinetic energy of at 27°C is
What is the correct answer?
4
The Van der Waal's equation explains the behaviour of
What is the correct answer?
4
The best electrical conductor of the following is
What is the correct answer?
4
Number of molecules of carbon dioxide present in 44 gm is
A. 12 x approximately
B. 3 x approximately
C. 6 x approximately
D. 3 x approximately
What is the correct answer?
4
An element has atomic weight 24 and equivalent weight 11.9. Its valency is
What is the correct answer?
4
The mean free path of a gas molecule is the distance
A. between the two opposite walls of the container
B. through which the molecules travel in one second
C. through which molecules move between two consecutive collisions
D. travelled by all the molecules divided by the total number of molecules in a particular gas
What is the correct answer?
4
The ratio of RMS velocity to average velocity of a gas molecule at a particular temperature is
What is the correct answer?
4
The critical temperature of a substance is defined as
A. the temperature above which the substance decomposes
B. the temperature above which the substance can exist only as a gas
C. melting point of the substance
D. boiling point of the substanc
What is the correct answer?
4
The radii of and are 95 pm and 181 pm respectively. Coordination number of is expected to be
What is the correct answer?
4
Which of the following would you expect to affect the vapour pressure of a liquid?
A. Inter-molecular forces in the liquid
B. Volume of the liquid in the liquid-vapour equilibrium
C. Volume of the vapour in the liquid-vapour equilibrium
D. The size of the container in which liquid-vapour equilibrium is establishe
What is the correct answer?
4
The electrical conductivity of metals is of the order of
What is the correct answer?
4
What types of forces are present in molecular solids?
What is the correct answer?
4
An example of covalent solid is
What is the correct answer?
4
What will be the mass of 6.03 x molecules of carbon monoxide ?
What is the correct answer?
4
Boltzmann constant is given by
What is the correct answer?
4
A closed vessel contains equal number of molecules of a total pressure at 740 mm. If oxygen is removed from the system the pressure will
D. become double of 740 mm
What is the correct answer?
4
Gases deviate from the ideal behaviour because their molecules
A. possess negligible volume
B. have forces of attraction between them
D. are not attracted to one another
What is the correct answer?
4
Of the following properties, the magnitude of one must always increase with temperature. The property is
What is the correct answer?
4
In anti-fluorite structure the negative ions
A. occupy tetrahedral voids
B. occupy octahedral voids
What is the correct answer?
4
If the tetrahedral sites in ccp arrangement of negative ions (Y) were half filled with cation (X), the empirical formula of the compound would be
What is the correct answer?
4
The number of molecules of present in 44 gms. of is
What is the correct answer?
4
At what temperature, the root mean square velocity of oxygen molecules is equal to that of at 27°C?
What is the correct answer?
4
A balloon filled with ethane is pricked up with sharp point and quickly plunged into a tank of hydrogen at the same pressure. After some time balloon will
C. remain unchanged in size
D. have half its volume of the gas
What is the correct answer?
4
22.4 litres of at 27.3°C and 1 atmosphere pressure shall weigh
What is the correct answer?
4
Four 1 litre flasks are separately filled with the gases hydrogen, helium, oxygen and ozone at the same temperature and pressure, the ratio of total number of atoms of these gases present in the different flasks would be
What is the correct answer?
4
From the Dulong and Petit's law atomic weight is given by which one of the following relations?
What is the correct answer?
4
The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure:
What is the correct answer?
4
Which of the following is an amorphous solid?