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प्रश्न
Name a metal which forms amalgams.
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उत्तर
Mercury forms amalgams.
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संबंधित प्रश्न
Define matter.
Which of the following materials fall in the category of a “pure substance”?
- Ice
- Milk
- Iron
- Hydrochloric Acid
- Calcium oxide
- Mercury
- Brick
- Wood
- Air
What are the characteristics of matter?
What is meant by saying that metals are malleable and ductile ?
What is meant by saying that non-metals are brittle ?
What is meant by saying that metals are sonorous ?
What are pure substances ? Give two examples of pure substances.
Which of the following substances are elements ?
Water, Salt, Mercury, Iron, Marble, Diamond, Wood, Nitrogen, Air, Graphite, Hydrogen, Oxygen, Sugar, Chlorine
Name two solid, two liquid and two gaseous elements at the room temperature.
How will you test whether a given solution is a colloidal solution ?
Define solubility of a substance. How does it vary with temperature ?
What is a suspension ? Give two examples of suspensions.
Name the process which is used in milk dairies to separate cream from milk.
Fill in the following blanks with suitable words :
A mixture of kerosene and petrol can be separated by .....................
Describe the various steps involved in the separation of iodine, iron filings and salt from a mixture.
What is chromatography ? State its two applications.
How can you obtain pure water from a salt-water mixture (or salt-solution) ? Draw a neat and labelled diagram of the apparatus you would use to obtain pure water from a salt-water mixture (or salt-solution).
The best way to recover sugar from an aqueous sugar solution is :
All the matter made of ______.
Rusting of an article made up of iron is called
