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प्रश्न
Draw a flow-chart for the schematic representation of different types of matter.
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उत्तर
Following flowchart represents different types of matter:
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संबंधित प्रश्न
What are the two conditions for the interconversion of states of matter ?
Write true or false for each statement. Rewrite the false statement correctly.
Matter cannot exist in different states.
Explain why, osmosis can be considered to be a special kind of diffusion. Classify the following into
(i) osmosis, and (ii) diffusion :
- swelling up of a raisin on keeping in water
- spreading of virus on sneezing
- earthworm dying on coming in contact with common salt
- shrinking of grapes kept in thick sugar syrup
- preserving of pickles in salt
- spreading of smell of cake being baked in the kitchen
- aquatic animals using oxygen dissolved in water during respiration
An inflated balloon full of air goes down slowly (becomes smaller and smaller slowly) even though the knot at the mouth of the balloon is airtight. And after a week all the air has escaped from the balloon. Explain how the air particles got out of the balloon.
Which of the following is a mixture ?
Salt, Air, Water, Alum, Sugar
Name the property which enables metals to be drawn into wires.
What are the three general classes of matter ? Give one example of each type.
What is the most common way of expressing the concentration of a solution ?
How will you differentiate between a suspension and a colloid ?
100 mL of water at room temperature of 25°C is taken in a beaker and a little of solid S is dissolved in it by stirring to obtain a solution X. More and more of solid S is added to the solution with constant stirring, while keeping the temperature of solution constant at 30°C. After some time it is observed that no more solid dissolves in water and at the same time some solid is also left undissolved at the bottom of the beaker.
- The contents of beaker are filtered through a filter paper to obtain solution Y in the form of a filtrate.
- What name is given to solutions like X ?
- What name is given to solutions like Y ?
- What will you observe if the solution Y at 30°C is cooled down to 10°C by keeping the beaker in crushed ice ? Why ?
- What term is used to denote the amount of solid dissolved in 100 grams of water in a solution lie Y ?
Name the process which can be used to recover salt from an aqueous salt solution.
Name the process by which common salt is obtained from sea-water.
Describe a method for separating a mixture of iron filings and sulphur powder other than that by using a magnet.
Draw a labelled diagram of the fractional distillation apparatus used for separating a mixture of alcohol and water.
Explain how, nitrogen , oxygen and argon gases are separated from air.
A solid mixture contains four constituents P, Q, R and S. P consists of tiny grains and it is mixed with
cement for plastering the walls. Q is a white solid which is recovered on a large scale from sea water by the
process of evaporation. R is in the form of tiny particles of a material whose corrosion is called rusting. And
S is a white solid which is used in making ordinary dry cells.
- What could P, Q, R and S be ?
- How would you separate a mixture containing P, Q, R and S ?
Atoms are tiny particles that repel each other when they are squeezed very close.
Define the term matter.
Define the term matter.
