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