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प्रश्न
All kinds of matter
विकल्प
occupy space and have definite mass
have mass and definite shape
can change their states
have definite volume
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उत्तर
occupy space and have definite mass
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संबंधित प्रश्न
Define the term matter. What is it composed of?
Name the terms for the particles of matter which may or may not have independent existence.
What are (i) metals (ii) non-metals, and (iii) metalloids ? Give two examples each of metals, non-metals and metalloids.
A, B and C are all liquids. Liquid A has a comparatively low boiling point. On heating, liquid A vaporises completely without leaving behind any residue. Liquid A is being used increasingly as a fuel in motor vehicles either alone or by mixing with petrol. Liquid B has a very high boiling point. It also vaporises completely on heating, without leaving any residue. Liquid B is a conductor of electricity and used in making thermometers. Liquid C has a moderate boiling point. On heating, liquid C vaporises leaving behind a white solid D which is used in cooking vegetables. The condensation of vapours from C give a liquid E which turns anhydrous CuSO4 to blue.
(a) Which liquid could be an element ? Name this element.
(b) Which liquid could be a mixture ? Name this mixture.
(c) Which liquid could be a compound ? Name this compound.
(d) What could the solid D be ?
(e) What do you think is liquid E ?
How much water should be mixed with 12 mL of alcohol so as to obtain 12 % alcohol solution ?
Which of the following contains less solute at a given temperature and pressure ? Unsaturated solution or Saturated solution.
Fill in the following blank :
Milk is a .................... solution but vinegar is a .................... solution.
Which of the following will show Tyndall effect ? Why ?
- Salt solution
- Starch solution
- Milk
- Copper sulphate solution
What is meant by the concentration of a solution ?
What do you understand by the statement " the solubility of copper sulphate in water at 20°C is 20.7 g" ?
The solubility of ammonium chloride in water at various temperatures is given below :
| Temperature | : | 10°C | 20°C | 40°C | 60°C | 80°C |
| Solubility | : | 24 g | 37 g | 41 g | 55 g | 66 g |
What mass of ammonium chloride would be needed to make a saturated solution of ammonium chloride in fifty grams of water at 40°C ?
How is the impurity of iron present in several substances removed in industries ?
Describe the method of separating a mixture containing common salt, sand and ammonium chloride.
How will you separate water from mustard oil ?
How is water purified on a large scale at water works ? Explain with the help of a labelled diagram. Name the substance which is added to kill germs in the drinking water supply ?
Asmita went to buy an earthen pot. There she saw many things kept for sale.
What is the difference between a substance and an object?
Solids possess very high kinetic energy.
Write scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
Define the term matter.
Define the term matter.
