List of top Science Questions on Metals and Non-Metals asked in Bihar Board X

The atomic number of magnesium is 12. What is its valency?
Which of the following metals is displaced from its salt solution by iron?
What is Anodising?
Write two differences between minerals and ores.
Which one of the following is a metalloid?
Which non-metal is found in liquid state at room temperature?
Zinc blende is an ore of which metal?
Duralumin is an alloy of which metal?
Which of the following metals has the lowest melting point?

The alloy consisting of 90% Cu and 10% Sn is named as

Bauxite is an ore of which of the following metals?
The correct order of reactivity of metals is
What is Philosopher’s wool?
The hardest natural substance is: