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प्रश्न
Fill in the following blanks with suitable words :
A mixture of kerosene and petrol can be separated by .....................
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उत्तर
A mixture of kerosene and petrol can be separated by fractional distillation.
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संबंधित प्रश्न
Name the terms for the change of a solid into liquid.
Write true or false for each statement. Rewrite the false statement correctly.
Matter cannot exist in different states.
A kind of matter which can sublime is
What is the scientific name of particles which make up mater?
Name the scientist who studied the movement of pollen grains suspended in water through a microscope. What is this phenomenon known as?
Name a metal which is soft and a non-metal which is hard.
Classify the following as elements or compounds :
Iron, Iron sulphide, Sulphur, Chalk, Washing soda, Sodium, Carbon, Urea
Which of the following substances are elements ?
Water, Salt, Mercury, Iron, Marble, Diamond, Wood, Nitrogen, Air, Graphite, Hydrogen, Oxygen, Sugar, Chlorine
Which of the following is not an element ?
Out of a colloid, solution and a suspension :
which one has the smallest particles ?
Choose one term from the following which includes the other three :
aerosol, emulsion, colloid, sol
Which of the following will show Tyndall effect ? Why ?
- Salt solution
- Starch solution
- Milk
- Copper sulphate solution
One of the following does not show Tyndall effect. This one is :
How would you separate iodine from a mixture of iodine and common salt ?
How will you separate a mixture of iron filings, chalk powder and common salt ?
Asmita went to buy an earthen pot. There she saw many things kept for sale.
How did she identify what she needed?
Which of the following statements are true for pure substances?
(i) Pure substances contain only one kind of particles
(ii) Pure substances may be compounds or mixtures
(iii) Pure substances have the same composition throughout
(iv) Pure substances can be exemplified by all elements other than nickel
Celsius scale is a scale of temperature in which zero represents the melting point of ice and 100 represents the boiling point of water.
Define the term matter.
Define the term matter.
