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प्रश्न
Fill in the blank
Liquids have a definite ______
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उत्तर
Liquids have a definite Volume.
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संबंधित प्रश्न
Fill in the blank :
The substances which can flow are called ________
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 the property which allows metals to be hammered into thin sheets.
What is meant by saying that metals are sonorous ?
State two physical properties on the basis of which metals can be distinguished from non-metals.
Classify the following into elements, compounds and mixtures :
arble, Air, Gold, Brass, Sand, Diamond, Graphite, Petroleum, Common salt, Sea-water, Chalk
Out of a colloid, solution and a suspension :
which one has the largest particles ?
Fill in the following blank :
A colloid is a ..............mixture and its components can be separated by the technique known as ...............
You have been given a suspension and a solution. How could you tell the difference between them by their appearance ?
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
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 ?
How is cream separated from milk ?
With the help of a labelled diagram, describe the method of separating ammonium chloride from a mixture of ammonium chloride and common salt. Mention the difference in the properties of ammonium chloride and sodium chloride which has made this separation possible.
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 ?
What difference in the properties of common salt and sand would enable you to separate a mixture of these two substances ?
Complete the given analogy.
Murukku from hot oil: ______:: Coffee powder residue from decoction: ______
The particles in the matter are extremely small and can be seen even with a powerful microscope.
Intermolecular space is maximum in ______.
Define the term matter.
Define the term matter.
