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प्रश्न
Elements are the______ form of pure substances.
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उत्तर
Elements are the simplest form of pure substances.
APPEARS IN
संबंधित प्रश्न
Name: an Inert Gas
Name A substance used as an insulator.
Find the atomicity of the Following molecule:
Dinitrogen Oxide
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.
The compound used as common salt is
Write the names of elements from the following symbol:
Fe
The diagram represents fractional distillation for the separation of mixtures. Answer the following :
- Can two immiscible liquids be separated by this process?
- Separation of liquids by this process is based on which physical property?
- If methyl alcohol & water are to be separated, which liquid would remain in flask ‘X’ after condensation.
- Give a reason for the above answer.
- State the purpose of the fractionating column in the apparatus.
Higher Order Thinking Skills.
In the diagram given below, the circle, square and triangle represent the atoms of different elements.
Identify all combinations that represent
- molecule of a compound
- molecule of an element consisting of two atoms
- molecule of an element consisting of three atoms
Water contains _____ and _____ element.
Name the element which is used in toothpaste to strengthen our teeth.
