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प्रश्न
The best way to recover sugar from an aqueous sugar solution is :
विकल्प
evaporation to dryness
distillation
filtration
crystallisation
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उत्तर
crystallisation
Crystallisation is a better technique to recover sugar from sugar solution because sugar decomposes or gets charred on heating. Also, the soluble impurities get removed by crystallisation.
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संबंधित प्रश्न
Liquids have definite shape and definite volume.
Fill in the blank :
The state of matter with definite volume and definite shape is called______
Name the terms for the particles of matter which may or may not have independent existence.
What are the two conditions for the interconversion of states of matter ?
Which of the following substances are elements ?
Water, Salt, Mercury, Iron, Marble, Diamond, Wood, Nitrogen, Air, Graphite, Hydrogen, Oxygen, Sugar, Chlorine
One of the following substances is neither a good conductor of electricity nor an insulator. This substance is :
Out of a colloid, solution and a suspension :
which one has the smallest particles ?
Choose the correct answer.
A 5 per cent sugar solution means that :
Name the process which can be used to recover salt from an aqueous salt solution.
Fill in the following blanks with suitable words :
The separation of liquids by fractional distillation is based on the difference in their .....................
How is water purified on a large scale at water works ? Explain with the help of a labelled diagram. Name the substance which is added to kill germs in the drinking water supply ?
Which of the following mixture cannot be separated by using water as the solvent ?
Which of the following cannot be separated from air by the process of fractional distillation ?
The boiling point of liquid argon is :
A solid mixture contains four constituents P, Q, R and S. P consists of tiny grains and it is mixed with
cement for plastering the walls. Q is a white solid which is recovered on a large scale from sea water by the
process of evaporation. R is in the form of tiny particles of a material whose corrosion is called rusting. And
S is a white solid which is used in making ordinary dry cells.
- What could P, Q, R and S be ?
- How would you separate a mixture containing P, Q, R and S ?
Wipe the board with a duster and then tap the duster against the table. What do you see?
Atoms are tiny particles that repel each other when they are squeezed very close.
Higher the temperature, the higher the kinetic energy of particles.
Gases do not diffuse very easily.
Define the term matter.
