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प्रश्न
Asmita went to buy an earthen pot. There she saw many things kept for sale.
What is the difference between a substance and an object?
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उत्तर
Objects are made from substances. Objects have definite shape and size.
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संबंधित प्रश्न
Define the term matter. What is it composed of?
Which of the following materials fall in the category of a “pure substance”?
- Ice
- Milk
- Iron
- Hydrochloric Acid
- Calcium oxide
- Mercury
- Brick
- Wood
- Air
What are (i) metals (ii) non-metals, and (iii) metalloids ? Give two examples each of metals, non-metals and metalloids.
What happens when the temperature of a saturated sugar solution is increased ?
Classify the following into solutions, suspensions and colloids :
Soda-water, Milk, Brine, Blood, Ink, Smoke in air, Chalk water mixture, Milk of Magnesia, Shaving cream, Muddy river water.
Name the process which can be used to recover salt from an aqueous salt solution.
Describe a method to separate a mixture of common salt and sand.
What is chromatography ? State its two applications.
Draw a labelled diagram of the fractional distillation apparatus used for separating a mixture of alcohol and water.
What's the solution?
We need to rub salt on a corncob, but only salt crystals are available.
