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प्रश्न
State any two properties for believing that aluminium is a metal.
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उत्तर
Aluminium is lustrous and malleable, so it is a metal.
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संबंधित प्रश्न
Fill in the blank
Liquids have a definite ______
Which of the following materials fall in the category of a “pure substance”?
- Ice
- Milk
- Iron
- Hydrochloric Acid
- Calcium oxide
- Mercury
- Brick
- Wood
- Air
The best evidence for the existence and movement of particles in liquids was provided by :
Fill in the following blanks with suitable words :
An element is made up of only one kind of ........
What are the two types of pure substances? Give one example of each type.
Which of the two will scatter light : soap solution or sugar solution ? Why ?
Calculate the concentration of a solution which contains 2.5 g of salt dissolved in 50 g of water.
What is the difference between solutions and colloids ?
How will you differentiate between a suspension and a colloid ?
Define Foam Give one example.
What is meant by a solution?
One of the following represents the solution of solid in a solid. This one is :
What type of magnet is fitted on a crane to separate scrap iron objects from a heap of waste materials in factories ?
Name the process which can be used to recover salt from an aqueous salt solution.
Name the process which can be used to purify an impure sample of copper sulphate.
What is chromatography ? State its two applications.
What is fractional distillation ? What is the use of fractionating column in fractional distillation ?
