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प्रश्न
Give two reasons for supposing that water is a compound and not a mixture.
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उत्तर
Water is a compound because:
- Water cannot be split into its constituents, hydrogen and oxygen, by physical methods.
- It can only be separated into its constituents by chemical processes.
- The properties of water are entirely different from those of its constituents.
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संबंधित प्रश्न
Select the correct alternative from the choices given for the following statement:
Example of a homogeneous mixture is
‘‘The properties of the product are different from those of the constituents''. State whether this statement best describes an element, a compound or a mixture.
Name the process you would use to separate a mixture of two miscible liquids (like acetone and water).
Name one pair of substances whose mixture can be separated by fractional distillation.
Define the following:
Impure substance
Fill in the blanks
___________is a process to obtain a very pure form of a solid dissolved in a liquid.
Tick (√) the correct alternative from the choice given for the following statement:
A mixture of mustard oil and water forms
State whether the following statement is true or false. If false write – the correct statement.
Heterogeneous mixtures have different composition and properties throughout the mixture.
While diluting a solution of salt in water, a student by mistake added acetone (boiling point 56°C). What technique can be employed to get back the acetone? Justify your choice.
Air is a ______.
