Which one of the following diagram shows the arrangement of molecules is true for solids?
Asma lit a perfume stick in the corner of a room. When she stood at the other corner, she smelled the perfume after sometime. What can we conclude from this?
Rooms produce perfume when a perfume stick is lit in a corner
All the air present in room gives perfume
Perfumes do not spread from one place to another.
All gases, including perfumes, have the property of spreading from one place to another.
Which one of the following is/are in a liquid state normally?
Water
Petrol
Mercury
All of the above
Which one of the following is NOT correct?
HeatSolid → Liquid
Cool Solid → Gas
CoolLiquid → Solid
heatLiquid → gas
Which one of the following can vary in volume?
Book
Spinning top
Balloon
Kettle
If we take three samples of a solid, liquid and gas, each having a fixed volume of 1cm2, then which of them will have the most number of molecules?
Solid
Liquid
Gas
It will be same in all the three
The following table contains some substances placed under the headings: solids, liquids and gases. Which one of the following is placed under wrong group?
Salt
Oxygen
Kerosene
Ramu dissolved some salt in water. He got salty water. What is the solute in this experiment?
Salty water
Salt and water
Which one of the following processes involves a decrease in the intermolecular forces between the molecules?
Condensation
Crystallisation
Evaporation
A student took 20 millilitres of water in a beaker and dissolved two teaspoonful of sugar in it. When he checked the volume, to his surprise, the volume remained same at 20 millilitres. Can you tell the reason?
Sugar did not actually dissolve in the water
Sugar evaporated
Sugar occupied the empty spaces in between the molecules of water.
Sugar has zero volume
