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प्रश्न
Define the term ‘compound’. In the compound carbon dioxide – the elements carbon & oxygen are combined in a fixed ratio. Explain.
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उत्तर
A compound is a pure substance made up of two or more different elements [atoms] combined chemically in a fixed proportion.
Since one carbon atom and two oxygen atoms combine to generate one carbon dioxide molecule (CO2), we refer to the combination of carbon and oxygen as occurring in a fixed ratio of 1 : 2 to form carbon dioxide.
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संबंधित प्रश्न
Define: Elements
Tick the most appropriate answer.
The constituents of a mixture are present in
- a fixed ratio
- a variable ratio,
- the ratio of 2: 1
- none of these
Differentiate between:
Homogenous and heterogenous substances
Define: Atom
Find the atomicity of the Following molecule:
Carbon Monoxide
Write the names of elements from the following symbol:
Zn
Select the correct answer to the statement given below:
A compound containing carbon, oxygen and calcium.
Give three differences between elements & compounds with relevant examples.
There are ______ number of known elements.
State true of false. If false, give the correct statement.
Two different elements may have similar atoms.
