Advertisements
Advertisements
प्रश्न
State whether the following statement is true or false :
Sponge is an example of solid sol.
Advertisements
उत्तर
False. Sponge is an example of solid foam.
APPEARS IN
संबंधित प्रश्न
Gases have definite volume but no definite shape.
When a crystal of potassium permanganate is placed in a beaker, its purple colour spreads throughout the water. What does this observation tell us about the nature of potassium permanganate and water?
What is Brownian motion? Draw a diagram to show the movement of a particle (like a pollen grain during Brownian motion.
Classify the following as elements or compounds :
Iron, Iron sulphide, Sulphur, Chalk, Washing soda, Sodium, Carbon, Urea
Name two solid, two liquid and two gaseous elements at the room temperature.
Give reason why copper metal is used for making electric wires.
Out of a colloid, solution and a suspension :
which one has the largest particles ?
What is the concentration of a solution which contains 16 g of urea in 120 g of solution ?
What happens when the temperature of a saturated sugar solution is increased ?
State whether the following statement is true or false :
Bread is an example of solid foam.
Define solvent.
What difference in the properties of oil and water enable their separation by a separating funnel ?
Fill in the following blanks with suitable words :
The gases of air can be separated by fractional distillation of liquid air because they have different..............
Describe a method to separate a mixture of common salt and sand.
Write a method to separate a mixture of sand and potash alum.
How would you separate iodine from a mixture of iodine and common salt ?
The technique which is used to separate particles of a solid suspended in a liquid quickly is called :
Tincture of iodine is a mixture of two materials X and Y. The material Y has a property that its solid form can be converted directly into vapours on heating by a process called Z.
- What could X be ?
- What could Y be ?
- Name the process Z.
- Which process would you use to recover both the components X and Y from tincture of iodine ?
- Which process can be used to recover only component Y from tincture of iodine ?
State whether true or false. If false, correct the statement.
Oil and water are immiscible with each other.
What type of matter glass is?
