Advertisements
Advertisements
Question
State whether the following statement is true or false :
Bread is an example of solid foam.
Options
True
False
Advertisements
Solution
True. Solid foam allows the gas to get dispersed in solid medium.
APPEARS IN
RELATED QUESTIONS
In a beam of sunlight entering a room, we can sometimes see dust particles moving in a haphazard way in the air. Why do these dust particles move?
Name a metal which is soft and a non-metal which is hard.
What elements do the following compounds contain ?
Sugar, Common salt
Name two solid, two liquid and two gaseous elements at the room temperature.
Give reason why copper metal is used for making electric wires.
Define a compound. Give two points of evidence to show that sodium chloride is a compound.
A solution contains 5.6 mL of alcohol mixed with 75 mL of water. Calculate the concentration of this solution.
How will you differentiate between a suspension and a colloid ?
What will happen if a saturated solution is :
- heated
- cooled
How will you separate iron pins from sand ?
What is fractional distillation ? What is the use of fractionating column in fractional distillation ?
Draw a labelled diagram of the fractional distillation apparatus used for separating a mixture of alcohol and water.
You are given a mixture of iodine in alcohol called tincture iodine. Which method will you use to recover both, iodine as well as alcohol, from this mixture ?
Write a few lines on the blackboard with a chalk. Now observe the chalk. What changes do you see in the chalk?
Name the metals that are used in jewellery.
The particles in the matter are extremely small and can be seen even with a powerful microscope.
A standard sheet of paper is about ______ of atoms thick
Solid is an arrangement of particles ______.
Define the term matter.
