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प्रश्न
How would you confirm that a colourless liquid given to your is pure water ?
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उत्तर
You can boil it and if it starts boiling at 100⁰ C, it might be water. You can also check its reactivity with some metals such as sodium and potassium that react violently with water. The best way, to prove that it is pure water, is to do experiments to see if it has the same capabilities and chemical behaviour as water has.
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संबंधित प्रश्न
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- Ice
- Milk
- Iron
- Hydrochloric Acid
- Calcium oxide
- Mercury
- Brick
- Wood
- Air
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- He
- Cl2
- CO
- Co
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Silicon, Mercury, Diamond, Sulphur, Iodine, Germanium, Sodium, Carbon, Magnesium, Copper, Boron, Helium
Draw a flow-chart for the schematic representation of different types of matter.
Which of the following are compounds ?
- CO
- No
- NO
- Co
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which one has the largest particles ?
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______ is so hard that it can scratch glass.
Gases change to liquid by the process of ______.
Atoms are tiny particles that repel each other when they are squeezed very close.
Gas-solid is ______.
Evaporation is always accompanied by ______ in temperature.
