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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
Select the correct alternative
The molecules can move freely anywhere in
- gases
- liquids
- solids
- none of the above
Fill in the blank :
The state of matter with definite volume and definite shape is called______
Which of the following materials fall in the category of a “pure substance”?
- Ice
- Milk
- Iron
- Hydrochloric Acid
- Calcium oxide
- Mercury
- Brick
- Wood
- Air
Explain why steel is used to make railway lines.
Name a non-metal which is a good conductor of electricity.
Name one element, one compound and one mixture.
The property/properties which enable copper metal to be used for making electric wires is/are :
What is the most common way of expressing the concentration of a solution ?
What is the concentration of a solution which contains 16 g of urea in 120 g of solution ?
Name the property of one of the constituents which can be used to separate a mixture of salt and iodine
Name the process which is used in milk dairies to separate cream from milk.
Name the process by which common salt is obtained from sea-water.
Describe a method to separate a mixture of common salt and sand.
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 ?
If there is a sudden shower, we take shelter under a roof at the roadside. Even though the rain does not fall on us directly, we get wet to some extent. Why ?
Name the metals that are used in jewellery.
______ is a smallest particle.
______ is so hard that it can scratch glass.
Define the term matter.
Define the term matter.
