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प्रश्न
Name: the Hardest Naturally Occurring Substance
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उत्तर
Diamond
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संबंधित प्रश्न
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
Give two examples of the following.
Non-metals which are solids
Tick (√) the correct alternative from the choice given for the following statement.
All pure substances have
Tick (√) the correct alternative from the choice given for the following statement.
Sulphur and carbon are
Write the names of elements from the following symbol:
Cu
Select the correct answer to the statement given below:
The chemical name for dinitrogen oxide [N20].
Select the correct answer to the statement given below:
A non-metal which exists in the liquid state.
Give a reason for the following statement :
Brass & bronze are examples of mixtures, while copper sulphate & lead nitrate are examples of compounds.
Water contains _____ and _____ element.
Elements contain the ______of the same kind.
