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प्रश्न
State whether the following statement are true or false :
Alcohol can be separated from a mixture of alcohol and water by a separating funnel.
पर्याय
True
False
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उत्तर
False. Because alcohol is separated from the mixture of alcohol and water by distillation.
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संबंधित प्रश्न
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
Name a liquid which can be classified as a pure substance and conducts electricity.
Name one solid, one liquid and one gaseous non-metal.
Name a metal which can be easily cut with a knife.
On the basis of composition of matter, milk is considered to be :
Which of the following statements are true for pure substances ?
- pure substances contain only one kind of particles
- pure substances may be compounds or mixtures
- pure substances have the same composition throughout
- pure substances can be exemplified by all elements other than nickel
Explain what happens when a beam of light is passed through a colloidal solution.
Name the different types of solutions. Give one example of each.
Name the property of one of the constituents which can be used to separate a mixture of salt and iodine
Name the process by which all the dye can be recovered from black ink.
Naphthalene can be separated from sand :
The liquid air has three components X, Y and Z whose boiling points are : –186°C, –183°C and –196°C,
respectively. When liquid air is fed into a tall fractional distillation column from near its bottom and warmed
up slowly :
(a) Which component will be collected from near the bottom of the fraction distillation column ? Why ?
(b) Which component will be collected from the top part of the fractional distillation column ? Why ?
(c) Which component will be collected from the middle part of the fractional distillation column ? Why ?
(d) What could the component X, Y and Z be ?
Which of the following are homogeneous in nature?
(i) ice
(ii) wood
(iii) soil
(iv) air
Give some examples of the Tyndall effect observed in your surroundings?
The fluidity of solids: ______.
Define the term matter.
Define the term matter.
Define the term matter.
Define the term matter.
