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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
The molecules can move freely anywhere in
Liquids have definite volume but do not have definite shape.
Differentiate between an atom and a molecule.
Define the following term of Matter .
Name a liquid which can be classified as a pure substance and conducts electricity.
Name the property which allows metals to be hammered into thin sheets.
Name a non-metal :
- which is lustrous
- which is required for combustion
- whose one of the allotrophic forms is a good conductor of electricity. Name the allotrope.
- other than carbon which shows allotropy
- which is known to form the largest number of compounds
Draw a flow-chart for the schematic representation of different types of matter.
One of the following substances is neither a good conductor of electricity nor an insulator. This substance is :
Choose one term from the following which includes the other three :
aerosol, emulsion, colloid, sol
Name the process which can be used to purify an impure sample of copper sulphate.
Fill in the following blanks with suitable words :
Miscible liquids are separated by .....................
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.
Tincture of iodine is a mixture of two materials X and Y. The material Y has a property that its solid form can be converted directly into vapours on heating by a process called Z.
- What could X be ?
- What could Y be ?
- Name the process Z.
- Which process would you use to recover both the components X and Y from tincture of iodine ?
- Which process can be used to recover only component Y from tincture of iodine ?
State whether true or false. If false, correct the statement.
Oil and water are immiscible with each other.
What type of matter glass is?
In Aerosol the dispersed phase is liquid and the dispersion medium is gas.
Which statement is not correct for a mixture
Solids do not flow.
Define the term matter.
