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प्रश्न
Name: A form of carbon used as a gem
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उत्तर
Diamond is used as a gem.
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संबंधित प्रश्न
Fill in the blan
An ________ is a homogeneous mixture of two or more metals.
Differentiate between the following.
Filter Paper and Alum
Give the symbols of: Carbon, calcium, copper, chlorine, cobalt, argon.
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name – a gas with a pungent, choking odour which is lighter than air
Complete the statement given below by filling in the blank with the correct word.
The basic unit of an element is an __________.
Select the correct answer from the choice given below.
The unreactive non-metallic element
Write the names of elements from the following symbol:
Si
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.
Select the correct answer from the choice given below to complete the sentence :
An example of a monoatomic molecule is ___________.
Reason out
Elements are called semimetals.
