Advertisements
Advertisements
प्रश्न
Sucrose (sugar) crystals obtained from sugarcane and beetroot are mixed together. Will it be a pure substance or a mixture? Give reasons for the same.
उत्तर
The composition of the sugar (sucrose) will remain constant irrespective of the source of its preparation. Hence sugar or sucrose is a. pure substance with a fixed composition.
APPEARS IN
संबंधित प्रश्न
When a mixture of iron powder and sulphur powder is heated strongly to form iron sulphide, then heat energy is :
The ‘sea water’ can be classified as a homogeneous mixture as well as a heterogeneous mixture ? Comment.
Name one pair of substances whose mixture can be separated completely by distillation.
Name the components present in the following mixture:
Brass
Name two substances which can sublime.
Name two substances soluble in water.
Fill in the blanks
Mist is a _________ mixture of droplets of water and air.
Write “true” or “false” for the following statement
Air can be separated from water by filtration.
Match the statements in List I with the correct answer in List II.
List I | List II |
1. Purification of water by adding alum | A: Sublimation |
2. Seawater leaving behind common salt | B: Sieving |
3. Separation of camphor and potassium chloride | C: Filtration |
4. Separation of charcoal from a charcoal-water mixture | D: Sedimentation |
5. Separation of bran and wheat flour | E: Evaporation |
State whether the following statement is true or false. If false write – the correct statement.
Components in a mixture are present in a definite proportion.