6.If the reactants and products both are in gaseous phase they bear a simple ratio in their
volumes
molecules
atoms
temperature
Correct Answer :
A. volumes
Related Questions
The vol. of 20 gms of nitrogen at N.T.P.
16 litres
36 litres
8 litre
32 litres
Cubic close packed arrangement of ions is described as
ABC AB ABC.....
ABC ABC......
AB AB..........
ABC CBA...
What will be the mass of 6.03 x molecules of carbon monoxide ?
18.00
28.01
56.02
14.05
The vapour density of a gas in 35.5. The volume occupies by 3.55 gms of the gas at N.T.P. is
224 litres
2.24 litres
11.12 litres
1.12 litres
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
More number of a gas molecules strike the surface per second
Velocity of the gas molecules increases
Gas molecules attract each other
Weight of the gas increase with volume
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
XY
Density of a gas relative to air is 2.3. If the average molar mass of air is 29.08/mol, the molecular mass of the gas will be
29 gm/mole
66.7 gm/mole
12.67 gm/mole
25.22 gm/mole
The wt. of 2.8 litres of a gas at N.T.P. is 3.50 gms. Its V.D. is
20
28
32
14
From the Dulong and Petit's law atomic weight is given by which one of the following relations?
6.41 sp. heat
6.4/sp. heat
sp. heat/6.4
sp. heat/6.4 x 2
Indicate the most viscous liquid of the following
propanol-2
1.2, ethandiol
1.2,3 propentriol
ethanol
The number of molecules in 32 gms of oxygen in
6.02 x
3.2 x
6.02 x
32 x
The number of atoms per unit cell in simple cubic, face centred cubic and body centred cubic arrangement are, respectively
8,14,9
1,2,4
1,4,2
8,4, 2
The number of molecules of present in 44 gms. of is
6 x approx
approx
3 x approx
12 x approx
How many nearest neighbours are there in an atom or ion in an octahedral hole of a close packed structure?
4
6
8
18
The best electrical conductor of the following is
(s)
Si(s)
NaCl (fused)
(I)
An open vessel at 37°C is heated until 3/5 of the air in it has been expelled. Assuming that the volume of the vessel remains constant the temperature to which the vessel is heated is
502°C
502 K
243.67°C
925C
The kinetic theory of gases predicts that total kinetic energy of a gaseous assembly depends upon the
pressure of a gas
temperature of the gas
volume of the gas
pressure, temperature and volume of the gas
In anti-fluorite structure the negative ions
occupy tetrahedral voids
occupy octahedral voids
are arranged in ccp
are arranged in hcp
In a solid atoms A are arranged in ccp array. Atoms B occupy all the octahedral voids and half the tetrahedral voids. The formula of the compound is expected to be
If the temperature and pressure remain unchanged the volume of obtained by the decomposition of a certain volume of will be
Triple the volume of
Half the volume of
Equal to the volume of
One third the volume of
In the gas equation PV = xT, x is a constant. The value of the constant depends upon
the quantity of gas
the quality of gas
type values of T and P
None of these
In the process of sublimation, the substance transforms directly
from the solid state to the liquid state
from the liquid state to gaseous state
from the solid state to gaseous state
from the liquid state to solid state
The vapour density of gas A is four times that of gas B. If the molecular weight of gas B is M, then the molecular weight of gas A is
2M
4M
8M
M/4
What is the vapour pressure of benzoyl chloride at its boiling point (197°C)?
760 torr
380 torr
197 torr
None of these
At 303 K ethanol has a vapour pressure of about 0.118 atm., acetic acid has the vapour pressure of about 0.039 atm., and ethyl iodide has a vapour pressure of about 0.263 atm. Which of the following represents the correct order of increasing normal boiling point ?
In a unit cell of cesium chloride the arrangement of cesium ions is
face centred cubic
hexagonal close packed
body centred cubic
simple cubic
The space occupied by spheres in ccp arrangement is
74.06%
68.05%
60.4%
52.4%
Volume occupied by 4.4 gift of carbon dioxide is
4.4 litres
2.24 litres
22.4 litres
4.48 litres
When an ideal gas undergoes unrestricted expansion, no cooling occurs because the molecules
are above inversion temperature
exert no attractive force on each other
do work equal to loss in kinetic energy
collide without loss of energy
To which of the following mixtures is the Dalton's law of partial pressures not applicable?
NO +
Xe + Ar