Advertisements
Advertisements
Question
Comment upon the following:-
shape
Advertisements
Solution
The shape defines a definite boundary.
APPEARS IN
RELATED QUESTIONS
Give reasons:
We can easily move our hand in air, but to do the same through a solid block of wood, we need a karate expert.
Which of the following diffuses fastest and which the slowest?
Solid, Liquid, Gas Give reasons for your answer.
Name two gases of air which dissolve in water by diffusion. What is the importance of this process in nature?
When a gas jar full of air is placed upside down on a gas jar full of bromine vapours, the red-brown vapours of bromine from the lower jar go upward into the jar containing air. In this experiment :
A substance has neither a fixed shape nor a fixed volume. State whether it is a solid, a liquid or a gas.
The space between ______ particles is the greatest one.
Which of the following is false for gases?
![]() |
|
| Fig. I | Fig. II |
In figure-I, an air column of length ℓ1 is entrapped by a column of Hg of length 8 cm. In figure-II length of same air column at the same temperature is ℓ2. The `ℓ_1/ℓ_2` is:
(1 atm = 76 cm of Hg)
Two gases A and B having molecular weights 60 and 45 respectively are enclosed in a vessel. The wt. of A is 0.50 g and that of B is 0.2 g. The total pressure of the mixture is 750 mm. The partial pressure of the gases B is ______ mm Hg.
A gaseous mixture of He and O2 is found to have a density of 0.518 gL-1 at 25° C and 720 torr. The mass percent of helium in this mixture is ______.


