Advertisements
Advertisements
प्रश्न
Write the properties of this substance.
Coal
Advertisements
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.
Glass
What is it made from? Why?
A screwdriver
What will happen if....? And why?
Nails are made of plastic.
Very Short Answer Type Question:
Write two substances which are made from leather.
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 a non-metal that has lustre.
Short Answer Type Question:
Metals generally occur in solid state and are hard. Name a metal that exists in liquid state and a metal that is soft and can be cut with knife.
Find the odd one out from the following:
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 – turmeric, honey, mustard oil, water, glucose, rice flour, groundnut oil.
Make any three pairs of substances where one substance is soluble in the other and any three pairs of substances where one substance remains insoluble in the other substances.
