Advertisements
Advertisements
प्रश्न
Explain the characteristics of ionic compounds.
Advertisements
उत्तर
- Physical nature: Ionic compounds are solids and are hard. They are generally brittle and break into pieces when pressure is applied.
- Melting and boiling points: Ionic compounds have high melting and boiling points.
- Solubility: Ionic compounds are generally soluble in water. However, they are insoluble in kerosene and petrol.
- Electrical conductivity: Ionic compounds conduct electricity in a molten state or in its aqueous solution. Conduction of electricity in these states is due to the movement of charged particles (i.e., ions) towards the oppositely charged electrodes. However, in solid-state, ionic compounds do not conduct electricity as movement of the ions is not possible due to their rigid structure.
संबंधित प्रश्न
Name the following:
Main ore of aluminium.
In the electrolytic refining of a metal M, what would you take as the anode, the cathode and the electrolyte?
Name the following:
The property possessed by metals by which they can be beaten into sheets.
The process by which sulphide ore is concentrated.
A zinc ore gave CO2 on treatment with a dilute acid. Identify the ore and write its chemical formula.
Name one metal which is extracted by reduction with carbon.
How is manganese extracted from manganese dioxide, MnO2? Explain with the help of an equation.
Define the term mineral.
The metal which is always present in an amalgam is:
(a) iron
(b) aluminium
(c) mercury
(d) magnesium
An element A which is a part of common salt and kept under kerosene reacts with another element B of atomic number 17 to give a product C. When an aqueous solution of product C is electrolysed then a compound D is formed and two gases are liberated.
(a) What are A and B?
(b) Identify C and D.
(c) What will be the action of C on litmus solution? Why?
(d) Write formula of the compound formed when element B reacts with an element E having atomic number 5.
Give reasons, why aluminum is used in:
wrapping chocolates
Give reasons, why aluminum is used in:
In making ships
Aluminum is used in thermite welding:
what is thermit?
Which method of refining is used to get 99.8% pure aluminium?
Usually ______ ores are subjected to ______ which is done in the absence of air.
Find the odd one out and give its explanation.
Write the name.
The molecular formula of main ore of aluminium –
Identify who I am!
Ore of Aluminum- ______
Explain concept with example/explain with the help of a balanced equation.
Ionic bond and ionic compounds
Explain in brief types of extraction of less reactive metals according to their reactivity.
