Advertisements
Advertisements
प्रश्न
Correct the following statement:
CO and Co both represents cobalt.
उत्तर
CO is a Carbon monoxide and Co is an element named Cobalt.
APPEARS IN
संबंधित प्रश्न
Define mixture.
Fill in the blank
Chalk powder dissolved in water is an example of a Chalk powder dissolved in water is an example of a _________.
Write true or false
All pure substances have characteristic melting and boiling points.
What is the difference between a pure substance and a mixture ?
Give two examples of Metalloids.
What is meant by 2H and H2
State the number of atoms of CaCO3
Answer the following question:
Why are copper and aluminium used to make electric wires?
Fill in the blank
_________ refers to the number of atoms in the molecule of an element
Give the name of the radical - OH
Select the correct answer from the choice given below.
The element which is malleable
Select the correct answer from the choice given below.
An element which is a poor conductor of heat
Select the correct answer to the statement given below:
The chemical name for dinitrogen oxide [N20].
Explain the term ‘mixture’.
Give an example of two liquids that form heterogeneous – mixtures.
Give an example for the elements derived from their Latin names.
Give two example of elements.
Give an example of each mixture having the following characteristics. Suggest a suitable method to separate the components of this mixture
Two or more coloured constituents are soluble in some solvent.
Reason out
Elements are called semimetals.