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General Principles and processes of Isolation of Elements
easy
Thermite is a mixture of
A
$Fe$ powder and $Al_2O_3$
B
$Al$ powder and $Fe_2O_3$
C
$Cu$ powder and $Fe_2O_3$
D
$Zn$ powder and $Cr_2O_3$
Solution
Thermite is the mixture of iron oxide $Fe _2 O _3$ (rust) and aluminum powder.
When it is ignited the aluminum powder reacts with the $O _3$ part of the rust in a highly exothermic reaction, the resulting product is molten iron. Thermite is commonly used in welding because the molten iron has the ability to seep into cracks in metal.
Standard 12
Chemistry
Similar Questions
Match the list
| $I$ | $II$ | ||
| $(A)$ | Van arkel method | $(P)$ | Purification of titanium |
| $(B)$ | Solvay process | $(Q)$ | Manufacture of $Na_2CO_3$ |
| $(C)$ | Bassemerisation | $(R)$ | Reduction of aluminium |
| $(D)$ | Holl Herault's process | $(S)$ | Reduction of cupper |
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