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प्रश्न
A kind of matter which can sublime is
पर्याय
water
plastic
milk
iodine
उत्तर
iodine
APPEARS IN
संबंधित प्रश्न
The inter-molecular space is maximum in
Select the correct alternative
The molecules can move freely anywhere in
- gases
- liquids
- solids
- none of the above
Write true or false for each statement. Rewrite the false statement correctly.
Matter cannot exist in different states.
All kinds of matter
State two physical properties on the basis of which metals can be distinguished from non-metals.
Name a metal which has no fixed shape.
What are the three general classes of matter ? Give one example of each type.
What is the name of the clear liquid formed when a solid dissolves in a liquid ?
Calculate the concentration of a solution which contains 2.5 g of salt dissolved in 50 g of water.
Explain what happens when a beam of light is passed through a colloidal solution.
Classify the following into solutions, suspensions and colloids :
Soda-water, Milk, Brine, Blood, Ink, Smoke in air, Chalk water mixture, Milk of Magnesia, Shaving cream, Muddy river water.
Which of the following are chemical changes and which physical ? Give reason.
- a glass bottle breaking
- coal burning in air
- making a cake
- wool being knitted into a sweater
Which one of the following is not a chemical change ?
What is the general name of the process by which tea-leaves are separated from prepared tea ?
Describe a method to separate a mixture of camphor and sand.
Wipe the board with a duster and then tap the duster against the table. What do you see?
Asmita went to buy an earthen pot. There she saw many things kept for sale.
How did she identify what she needed?
Asmita went to buy an earthen pot. There she saw many things kept for sale.
From what substance has the potter made all the things?
Liquids cannot be compressed and they have fixed volume.
Evaporation does form bubbles.
