Smelting

Q. what is hybridisation of chlorine in ClO2 ?

Q. what is redox reaction

Q.

In earth's crust, tin occurs as:

1. Manganite

2. Cassiterite

3. Kernite

4. Cryolite

Q. 1 mol of KCIO3 is thermally decomposed andexcess of aluminium is burnt in the gaseousproduct. How many moles of Al203 are formed?

Q. 18. Why does the melting and boiling point of water is affect by addition of impurities.

Q. ​The process of electrolysis has immense industrial applications like electro-refining of metals, electrolysis etc. The principle is used for electroplating also.

1. What is an electrolytic cell?

2.Name the electrode which carries negative charge

1. Can graphite be used as an electrode? Why?

​4.Give one difference between electrolytic cell and electrochemical cell.

Q. Which of the following are alkalis? NaOH, Ca(OH)2, KOH, Mg(OH)2, NH4OH.

Q. could it is possible that water freeze(become ice) at a temperature above 100^0C with very high pressure.

Q.

The smelting of iron in a blast furnace involves the following process

1. Combustion

2. Reduction

3. Slag formation

4. Sublimation