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प्रश्न
Name the following:
The component of a naphthalene-sodium chloride mixture, which remains in the evaporating dish when heated together, covered with a funnel.
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उत्तर
Sodium chloride.
संबंधित प्रश्न
What is meant by a substance?
List the points of differences between homogeneous and heterogeneous mixtures with examples.
Is air a mixture or a compound ? Give three reasons for your answer.
Define a mixture. Give two points of evidence to show that sugar solution is a mixture.
A mixture of sulphur and carbon disulphide is :
Seawater tastes salty due to the dissolved salt. the salinity (the proportion of salts in water) of some water bodies Lonar lake - 7.9 %, Pacific Ocean 3.5%, Mediterranean sea - 3.8%, Dead sea - 33.7%. Explain two characteristics of the mixture from the above information.
Select homogeneous and heterogeneous mixtures from the following:
The salt solution, petrol, and water, sand, and charcoal, alcohol and water, air dissolved in water, air, seawater, fruit juices, mist, brass.
Why do we need pure substances?
Give a reason for the following statement:
Gunpowder is an example of a heterogenous 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.
