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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
Any matter which has a definite _______ but no definite shape is called a _______
What are the conditions for 'something' to be called 'matter'?
Honey is more viscous than water. Can you suggest why?
In a beam of sunlight entering a room, we can sometimes see dust particles moving in a haphazard way in the air. Why do these dust particles move?
The best evidence for the existence and movement of particles in liquids was provided by :
Name the property which enables metals to be drawn into wires.
Name one element, one compound and one mixture.
What is the other name for impure substances ? Give two examples of impure substances.
How would you confirm that a colourless liquid given to your is pure water ?
Which of the following is not an element ?
Which one of the following is not a metalloid ?
One of the following is a solid foam. This one is :
Name the process which can be used to recover salt from an aqueous salt solution.
Which technique is used in a washing machine to squeeze out water from wet clothes while drying ?
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).
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal which exists as a liquid at room temperature.
Define the term matter.
Write a scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
