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प्रश्न
Name: the Hardest Naturally Occurring Substance
उत्तर
Diamond
APPEARS IN
संबंधित प्रश्न
Correct the following statement:
CO and Co both represents cobalt.
Give one example for the following types of mixtures :
misicible liquids
Find the atomicity of the Following molecule:
Carbon Monoxide
Tick (√) the correct alternative from the choice given for the following statement.
All pure substances have
State five different characteristics of compounds.
Give three differences between elements & compounds with relevant examples.
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.
Why are utensils made up of aluminium and brass?
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.
Higher-Order Thinking questions:
Why is hydrogen considered an element?
