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प्रश्न
What is meant by saying that metals are malleable and ductile?
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उत्तर
Malleability refers to the property of a metal that allows it to be hammered into thin sheets. Ductility refers to the property of metals that allows them to be stretched into thin wires.
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संबंधित प्रश्न
Define the following term of Matter .
Write true or false for each statement. Rewrite the false statement correctly.
Matter cannot exist in different states.
All kinds of matter
What are the three groups into which all the elements can be divided ? Name two elements belonging to each group.
Choose one term from the following which includes the other three :
aerosol, emulsion, colloid, sol
How will you test whether a given solution is a colloidal solution ?
What is a colloid ? Give two examples of colloids (or colloidal solutions)
State whether the following statement are true or false :
Alcohol can be separated from a mixture of alcohol and water by a separating funnel.
Name the process by which the various gases of the air are separated.
How will you separate a mixture of iron filings, chalk powder and common salt ?
The dyes present in fountain pen ink can be separated by the technique of :
There are three liquids A, B and C, all having different densities and different boiling points. Liquids A and C are organic in nature whereas liquid B is considered to be inorganic. When liquids A and B are put together in a container, they form a single layer. On the other hand, when, liquids B and C are mixed, they form two separate layers :
(a) Which process will you use to separate a mixture of A and B ?
(b) Which method will you use to separate a mixture of B and C ?
(c) Name the liquids which would behave like (i) A (ii) B and (iii) C.
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 ?
What difference in the properties of common salt and sand would enable you to separate a mixture of these two substances ?
Which among the following ______ will get attracted to by magnet?
Diffentiate between absorption and adsorption.
Which of the following statements are true for pure substances?
(i) Pure substances contain only one kind of particles
(ii) Pure substances may be compounds or mixtures
(iii) Pure substances have the same composition throughout
(iv) Pure substances can be exemplified by all elements other than nickel
Liquids have ______.
Intermolecular space is maximum in ______.
Define the term matter.
