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प्रश्न
Name a metal which can be easily cut with a knife.
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उत्तर
Sodium can be easily cut with a knife.
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संबंधित प्रश्न
Solids have definite shape and definite volume.
Gases have definite volume but no definite shape.
Fill in the blank :
The substances which can flow are called ________
Name the terms for the particles of matter which may or may not have independent existence.
Name a non-metal which is a good conductor of electricity.
Which of the following does not have a fixed melting point/boiling point ?
State whether the following statement is true or false :
Sponge is an example of solid sol.
Which of the following will show Tyndall effect ? Why ?
- Salt solution
- Starch solution
- Milk
- Copper sulphate solution
How would you prepare a saturated solution of sodium chloride in water at 25°C ? What will happen if this solution is cooled to 10°C ?
Which of the following is not an emulsion ?
One of the following represents the solution of solid in a solid. This one is :
What difference in the property of two miscible liquids enables their separation by fractional distillation ?
Describe the various steps involved in the separation of iodine, iron filings and salt from a mixture.
Pure copper sulphate can be obtained from an impure sample by the process of :
The given mixture contains three constituents A, B and C. The constituent A is a yellow coloured, solid element which dissolves in a liquid D. The constituent B is a blue coloured salt which is insoluble in liquid D but dissolves easily in another liquid E. The constitudent C is a liquid which is used in cooking food and forms a solid fat on hydrogenation.
(a) What do you think could (i) constituent A, and (ii) liquid D be ?
(b) What could (i) constituent B, and (ii) liquid E be ?
(c) What could liquid C be ?
(d) How will you separate the mixture containing A, B and C ?
Name one pair of liquids which can be separated by using a separating funnel.
A standard sheet of paper is about ______ of atoms thick
Solids possess very high kinetic energy.
Which statement is not correct for a mixture
Define the term matter.
