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प्रश्न
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal which is required for combustion.
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उत्तर
Oxygen
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संबंधित प्रश्न
Why is it necessary to separate the constituents of a mixture.
Write the Chemical Name of the Following and Also Give Their Molecular Formulae:
Marble
Answer the following question:
What do you understand by the statement: ‘metals are ductile and malleable’?
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 gaseous non-metal.
Complete the statement given below by filling in the blanks with the correct words.
From the elements – He, Br, Pt, and O; the element which is metallic is ____, an inert element is ____, forms a triatomic molecule is ____, is liquid at room temperature is_ ___.
Write the names of elements from the following symbol:
Br
Write the names of elements from the following symbol:
Fe
Give a reason for the following statement:
Components in a mixture are present in varying proportions and not in a fixed proportion.
Match the following.
| 1. | Element | Made up of molecules |
| 2. | Compound | Impure substance |
| 3. | Colloid | Settles down on standing |
| 4. | Suspension | Pure substance |
| 5. | Mixture | Made up of atoms |
