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प्रश्न
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name - a poisonous gas almost as heavy as air.
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उत्तर
A poisonous gas almost as heavy as air is Carbon monoxide
संबंधित प्रश्न
Tick the most appropriate answer
Solutions are
- heterogeneous mixtures.
- compounds
- homogeneous mixtures.
- elements
Define a pure substance. How many types of pure substances do you know?
Give two examples of Noble gases.
Give one use of the following substance:
Iron
Fill in the blank
_________ refers to the number of atoms in the molecule of an element
Complete the statement given below by filling in the blank with the correct word.
Element ______ has the symbol derived from its Latin name ‘Argentum’
Select the correct answer to the statement given below:
A non-metal which exists in the liquid state.
Define the term ‘compound’. In the compound carbon dioxide – the elements carbon & oxygen are combined in a fixed ratio. Explain.
Higher Order Thinking Skills.
List out the metals, non-metals and metalloids which you use in your house, schools. Compare their properties.
How are elements classified?
