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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
Which of the following materials fall in the category of a “pure substance”?
- Ice
- Milk
- Iron
- Hydrochloric Acid
- Calcium oxide
- Mercury
- Brick
- Wood
- Air
Name two processes which provide the best evidence for the motion of particles in matter.
What is meant by saying that metals are lustrous ?
The three important metalloids are.............................. and ..........................
What are the three general classes of matter ? Give one example of each type.
Which one of the following is not a metalloid ?
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
What is meant by the concentration of a solution ?
What is the difference between colloids and suspensions ?
Tincture of iodine has antiseptic properties. This solution is made by dissolving :
Matter is made up of ______.
Define the term matter.
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
Which of the following statements are true for pure substances?
(i) Pure substances contain only one kind of particles
(ii) Pure substances may be compounds or mixtures
(iii) Pure substances have the same composition throughout
(iv) Pure substances can be exemplified by all elements other than nickel
Give some examples of the Tyndall effect observed in your surroundings?
Celsius scale is a scale of temperature in which zero represents the melting point of ice and 100 represents the boiling point of water.
______ is used for industrial refrigeration and transporting frozen food.
Gas-solid is ______.
Examples of foam are ______.
Define the term matter.
