Flash Card
When a corroded copper article is dipped in silver nitrate solution,
The minerals from which the metal can be separated economically are called
Which of the following is the method to concentrate ore?
Cassiterite ore is concentrated by
The chemical formula of copper pyrite is
Gold plated ornaments are the examples of
Nonmetals are also called
Cassiterite is an ore of....metal.
Iron is
Which of the following statements incorrect about leaching process to concentrate ores?
In which of the following pairs will the displacement reaction occur?
In anodization, aluminium is coated with a thin strong and uniform layer of
Ionic compounds ure soluble in
In the Wilfiey table method, the particles of gangue are separated by........separation method.
Which of the followng nonmetal is a liquid?
Which of the following is responsible for the crystal structures in ionic compounds?
Which of the following statements is INCORRECT?
In the electrolysis of alumina, aluminium is deposited at .................. while oxygen is liberated at......
If A is more reactive than metal B
.............exist in liquid state at room temperature.
What is the colour of the flame when copper metal is burned on the flame?
In galvanizing method,............. applied on iron.
The sound of one metal colliding with another metal a noise, this property is called....
Which of the following is a good conductor of electricity?
Which of the following method is used to prevent the accumulation of greenish layer on brass due to corrosion?
When a copper strip is kept immersed in freshly prepared ferrous sulphate solution taken in a test-tube,
which of the following non metal is lustrous?
Diamond is an allotrope of......
Fe2O3 +2AI - 2Fe+ AI2O3 + HEAT ,In the above reaction,........ undergoes reduction.
The soft metal which can be cut with knife is ,..............
Corrosion of silver causes a black layer of
When an aluminium strip is immersed into ZnSO4 solution, the colour of the solution
Priyanka introduced an iron nail in a test-tube containing freshly prepared copper sulphate solution. What would she observe?
Aluminium oxide is.......... in nature.
The hardest among the following metal is.....
.........metal has the hightes melting point.
Which of the following sets of oxides is acidic?
Which of the following statements is INCORRECT?
If wire of A is immersed in the salt solution of B. wherein B is more reactive than A
Copper loses its lustre due to formation of......... on surface.
