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प्रश्न
Name: Two substances used to make electric wires
उत्तर
Two substances used to make electric wires are:
1. Copper.
2. Aluminium as these are good conductors of electricity.
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संबंधित प्रश्न
Fill in the blank
A pure substance has definite.................. and constant ..............
What are the different types of mixtures ?
Give one example for the following types of mixtures :
solid-liquid heterogenous mixture.
Define: Atom
State the number of atoms of H2SO4
Fill in the blank
The most abundant element in the earth’s crust is _______.
Indicate whether the following statement is true or false:
A compound is made up of just one kind of atom
Complete the statement – an element is a pure substance made up of ____________ atoms.
Elements are broadly classified into metals and non-metals. State six general differences in the physical properties of metals and non-metals. State two metals and two non-metals which contradict with the general physical properties – giving reasons. State one difference in property between metalloids and noble gases.
The first letter of an element is always written in ______ letter.
