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प्रश्न
Write the properties of this substance.
Coal
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उत्तर
- Coal is a hard substance.
- It is a fossil fuel that is readily combustible.
- It serves as an energy source.
- It is characterized by the predominant presence of carbon.
संबंधित प्रश्न
Write the properties of this substance.
Flour
Write the properties of this substance.
Ink
Why does this happen?
The fragrance of incense sticks lighted in one corner of a room spreads to the other corner.
Very Short Answer Type Question:
Name some substances which are made from plastics.
Short Answer Type Question:
Metals have lustre (shine). Give the reason why some metal articles become dull and loose their shine.
Short Answer Type Question:
Name the naturally occurring hardest substance known.
Long Answer Type Question:
Describe an experiment to prove that water is transparent.
List all items known to you that float on water. Check and see if they will float on an oil or kerosene.
Materials which can be drawn into wires are called ductile. Which of the following is not a ductile material?
You are provided with the following materials
- Magnifying glass
- Mirror
- Stainless steel plate
- Glass tumbler
Which of the above materials will you identify as transparent?
