Question

The composition of thermite mixture is:
A.iron (III) oxide and aluminium powder in the ratio 1:3
B.aluminum powder and iron (III) oxide in the ratio 1:3
C.aluminum powder and barium peroxide in the ratio 1:3
D.barium peroxide and aluminum powder in the ratio 1:3

Answer 1

Thermite is a commonly known pyrotechnic composition of metal oxide and metal powder. When it is ignited by heat, the thermite undergoes exothermic redox reaction. Most varieties of thermite are not explosive, but it can sometimes create small bursts of heat and may result in high temperature in a small or little space.

Complete step by step answer:
We know that thermite is a material which is used in welding for melting metals together. It is a mixture of iron oxide and metallic aluminium, that after a redox reaction produces the molten iron. When we allow the oxygen and the aluminium in the mixture combine, the thermite ignites and generates a high temperature.
So, we can say that the composition of thermite mixture is aluminium powder and iron (III) oxide in the ratio 1:3.
Therefore, out of the given options, B is the correct option.

Additional information:
Thermite reactions have many uses.
We can use copper thermite together welding thick copper wires for the electrical connections. It is extensively used by the electrical utilities and in the telecommunications industries
We can use thermite for quickly welding or cutting steel such as rail tracks, without requiring any heavy equipment.

Note:
Thermite is not commonly explosive. It however operates by exposing a very small space to an extremely high temperature. A thermite reaction, used for purifying the ores of some of the metals, is called the thermite process, or as an aluminothermic reaction.