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प्रश्न
Select the correct answer to the statement given below:
A metalloid
पर्याय
Chalk
Oxygen
Silicon
Bromine
Nitrous oxide
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उत्तर
Silicon
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संबंधित प्रश्न
Give two examples for the following: Metals
Give Two Examples for Each of the Following: Non-metals
State four differences between compounds and mixtures.
Name: the Hardest Naturally Occurring Substance
Give two examples of the following.
Non-metals which are solids
Find the atomicity of the Following molecule:
Dinitrogen Oxide
Indicate whether the following statement is true or false:
A compound is made up of just one kind of atom
Tick (√) the correct alternative from the choice given for the following statement.
The most abundant elements in the universe are
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 blanks with the correct words.
From the elements – He, Br, Pt, and O; the element which is metallic is ____, an inert element is ____, forms a triatomic molecule is ____, is liquid at room temperature is_ ___.
Select the correct answer from the choice given below.
The type of molecule- bromine
Write the names of elements from the following symbol:
Si
Explain the difference between Atoms and molecules.
Give an example of two liquids that form heterogeneous mixtures.
Select the correct answer from the choice given below to complete the sentence :
An example of a monoatomic molecule is ___________.
Give a reason for the following statement :
The filter paper made into a cone & placed in a funnel for filtering out the solid particles in a solid-liquid mixture should be moistened before placing it.
There are ______ number of known elements.
The first letter of an element is always written in ______ letter.
Differentiate between elements and compounds.
Complete the table by writing the symbols of the following elements
| Element | Symbol |
| Aluminum | Al |
| Nickel | |
| Bromine | |
| Helium | |
| Magnesium |
