Advertisements
Advertisements
प्रश्न
What do you observe when a gas jar which appears empty is inverted over a gas jar containing Bromine vapours? Name the phenomenon.
Advertisements
उत्तर
When a gas jar full of bromine vapours (reddish brown) is inverted over a gas jar containing air over it. It is observed that after sometime, the reddish brown vapours of bromine also spread out into the upper jar. This mixing is called diffusion. The rate of diffusion is the fastest in gases and the slowest in solids. It increases with an increase in temperature.
APPEARS IN
संबंधित प्रश्न
Classify the following into solids, liquids and gases.
Oxygen, milk, common salt, wax, stone, water vapour, carbon-dioxide, sugar, mercury, coal, blood, butter, copper, coconut oil, kerosene.
Fill in the blank:
..............can flow
Give two examples of the following:
Substances which do not change their states.
Give reason of Liquids have definite volume but no difinite shape.
Give reason of When a teaspoon of sugar is added to half a glass of water and stirred, the water level in the glass does not rise.
State two characteristics of matter demonstrated by diffusion.
Bromine particles are almost twice as heavy as chlorine particles. Which gas will diffuse faster; bromine (vapour) or chlorine? Explain your answer.
A crystal of iodine is placed in a closed flat bottom flask and heated. State how you would conclude from the observations seen, that interparticle space is minimum in solids and maximum in gases.
With reference to the liquid state of matter – answer the following
How does the stored energy, have an effect on inter-particles space.
You are provided with a mixture of naphthalene and ammonium chloride by your teacher. Suggest an activity to separate them with well labelled diagram.
