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प्रश्न
Give one use of the following substance:
Coal
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उत्तर
Coal: Coal is used as fuel also used in thermal power plants to produce electricity.
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संबंधित प्रश्न
Name: a Liquid Metal
Give two examples of the following.
Non-metals which are lustrous
Name A substance used as an insulator.
Indicate whether the following statement is true or false:
Elements are made up of compounds
Tick (√) the correct alternative from the choice given for the following statement
A non-metal which is a good conductor of electricity.
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name - a poisonous gas almost as heavy as air.
Write the names of elements from the following symbol:
Cu
Give three differences between elements & compounds with relevant examples.
There are ______ number of known elements.
Match the following:
| 1. | Co2 | a. | Robert Boyle |
| 2. | Sulfur | b. | Making mobile phones |
| 3. | Element | c. | triatomic molecule |
| 4. | Gallium | d. | Polyatomic molecule |
