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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
Sand is a compound of
पर्याय
silicon and nitrogen
silicon and oxygen
oxygen and sulphur
none of the above
उत्तर
silicon and oxygen
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संबंधित प्रश्न
Name: a Metal Which is brittle
Name: an Inert Gas
Give two examples of the following.
Non-metals which are solids
Give reason: A frying pan is made up of steel but its handle is made up of wood.
Tick (√) the correct alternative from the choice given for the following statement.
Gold is used to make jewellery because
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 A, B, C, D & E for the statement given below :
A mixture consisting of elements & a compound.
Complete the table by writing the symbols of the following elements
| Element | Symbol |
| Aluminum | Al |
| Nickel | |
| Bromine | |
| Helium | |
| Magnesium |
Higher-Order Thinking questions:
Why is hydrogen considered an element?
