Related Questions
What is the correct answer?
4
The number of molecules in 32 gms of oxygen in
What is the correct answer?
4
The kinetic theory of gases predicts that total kinetic energy of a gaseous assembly depends upon the
B. temperature of the gas
D. pressure, temperature and volume of the gas
What is the correct answer?
4
The V.D. of a gas is 11.2 gm. The volume occupied by 11.2 gm. of this gas at N.T.P. is
What is the correct answer?
4
In zinc blende structure, the zinc atoms occupy
C. half of the octahedral sites
D. half of the tetrahedral sites
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
Which of the following should be most viscous?
What is the correct answer?
4
The electrical conductivity of metals is of the order of
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
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
A liquid of density 1.742 g is observed to show a capillary rise of 73 mm in a tube of radius 0.65 mm. Then the surface tension of the liquid is
What is the correct answer?
4
One mole of gas is defined as
A. The number of molecules in 22.4 litres of gas at S.T.P
B. The number of molecules contained | in 6 grams of 12 C isotope
C. The number of molecules in one formula weight of gas
D. The number of molecules in litre of gas
What is the correct answer?
4
In NaCl type structure, the coordination number of the cation and anion are
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
Which of the following will have low heat of fusion?
D. a network of covalent solid
What is the correct answer?
4
The vol. of 20 gms of nitrogen at N.T.P.
What is the correct answer?
4
According to Avogadro's hypothesis equal volumes of two gases under the same conditions of temperature and pressure contain
A. Equal number of electrons
D. Equal number of molecules
What is the correct answer?
4
Correct gas equation is
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
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
The vapour density of completely dissociated sociated would be
A. Determined by the amount of solid used in the experiment
B. Triple to that of
D. Slightly less than half of that of
What is the correct answer?
4
The number of atoms per unit cell in bcc arrangement is
What is the correct answer?
4
The coordination number of each sphere in hcp arrangement is
What is the correct answer?
4
The ionic radii of and are 0.66 and 1.40 , respectively. The most probable type of gteometry exhibited by MgO on the basis of radius ratio rule is
What is the correct answer?
4
Lattice energy of a solid is high if
A. the radii of the ions are large
B. radii of the ions are small
C. charge on the ions are small
What is the correct answer?
4
Which of the following statement wrong?
A. In solid state molecules, atoms or ions are held with a strong force of attraction and are in a fixed position
B. In liquid state the molecules, atom or ions are held with a strong force and have a restricted motion
C. In gaseous states, the molecules are randomly arranged and are apart from each other
D. Solid, liquid and gaseous states have different movement is particles
What is the correct answer?
4
If all the octahedral sites in a cubic close packed arrangement () are completelyfilled with cations, the empirical formula of the compound could then be
What is the correct answer?
4
Certain volume of a gas exerts on its walls some pressure at a particular temperature. It has been found that by reducing the volume of the gas to half its original value, the pressure becomes I twice that the initial value of constant temperature. This happens because
A. More number of a gas molecules strike the surface per second
B. Velocity of the gas molecules increases
C. Gas molecules attract each other
D. Weight of the gas increase with volume
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
How many nearest neighbours are there in an atom or ion in an octahedral hole of a close packed structure?
What is the correct answer?
4
In the gas equation PV = xT, x is a constant. The value of the constant depends upon
C. type values of T and P