Advertisements
Advertisements
प्रश्न
The best way to recover sugar from an aqueous sugar solution is :
विकल्प
evaporation to dryness
distillation
filtration
crystallisation
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
The molecules can move freely anywhere in
Liquids have definite volume but do not have definite shape.
Fill in the blank
Liquids have a definite ______
Classify the following into elements, compounds and mixtures:
- Sodium
- Soil
- Sugar solution
- Silver
- Calcium carbonate
- Tin
- Silicon
- Coal
- Air
- Soap
- Methane
- Carbon dioxide
- Blood
Fill in the following blank with suitable words :
The best evidence that the particles of matter are constantly moving comes from the studies of ................. and ...................
When a crystal of potassium permanganate is placed in a beaker, its purple colour spreads throughout the water. What does this observation tell us about the nature of potassium permanganate and water?
When a crystal of potassium permanganate is placed at the bottom of water in a beaker, the water in the whole beaker turns purple on its own, even without stirring. This is an example of :
What is the other name for impure substances ? Give two examples of impure substances.
Out of a colloid, solution and a suspension :
which one has the smallest particles ?
Which of the two will scatter light : soap solution or sugar solution ? Why ?
Choose one term from the following which includes the other three :
aerosol, emulsion, colloid, sol
Fill in the following blank :
Milk is a .................... solution but vinegar is a .................... solution.
Name the process which is used in milk dairies to separate cream from milk.
Fill in the following blanks with suitable words :
Immiscible liquids are separated by using a .....................
Fill in the following blanks with suitable words :
If a mixture contains iron filings as one of the constituents, it can be separated by using a .......................
How will you separate a mixture containing sand and sugar ?
How will you separate a mixture of iron filings and powdered carbon ?
Seema visited a Natural Gas Compressing Unit and found that the gas can be liquefied under specific conditions of temperature and pressure. While sharing her experience with friends she got confused. Help her to identify the correct set of conditions
Liquids cannot be compressed and they have fixed volume.
Write a scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
