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प्रश्न
Select the correct answer from the choice given below to complete the sentence :
Dust in air is an example of _________ mixture.
पर्याय
heterogeneous
homogenous
उत्तर
Dust in the air is an example of a Homogenous mixture.
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संबंधित प्रश्न
Fill in the blank
A pure substance has definite.................. and constant ..............
Tick the most appropriate answer.
How many times is a proton heavier than an electron?
- 1500
- 1800
- 1840
- none of these
Give reason: Graphite is used to make a lead of the pencils.
Answer the following question:
Give the advantages of using symbols instead of names of elements or compounds.
Find the atomicity of the Following molecule:
Aluminium Suiphide
Find the atomicity of the Following molecule:
Acetic Acid
Write the names of elements from the following symbol:
Si
Give an example for the elements derived from their Latin names.
Match the following.
| Atom | Building block of matter |
| Element | Atoms of different kinds |
| Compound | Atoms of the same kind |
| Molecule | Smallest unit of a substance |
Why are utensils made up of aluminium and brass?
