The catalyst used in Bosch process of manufacture of - H - 2- is -160-finely divided - Ni- V - 2 O - 5- Pb- Fe - 2 O - 3 - Cr - 2 O - 3-

${F e}_{2} O_{3}$ + $A l$ $\to$ $F e$ + ${A l}_{2} O_{3}$
This is the reaction used in thermite welding process. Calcium can also be used instead of aluminium in this process.

List I	List II
A. Calcination	a. $2 {C u}_{2} S + 3 O_{2} \to 2 {C u}_{2} O + 2 S O_{2}$
B. Roasting	b. ${F e}_{2} O_{3} \cdot n H_{2} O \to {F e}_{2} O_{3} + n H_{2} O$
C. Flux	c. ${C r}_{2} O_{3} + 2 A l \to {A l}_{2} O_{3} + 2 C r$
D. Thermite	d. $S i O_{2} + F e O \to F e S i O_{3}$

Match the following.

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The catalyst used in Bosch process of manufacture of H2 is :

The correct option is D Fe2O3+Cr2O3Water gas (1:1 volume ratio of CO and hydrogen) is mixed with steam and passed over Fe2O3 catalyst with promoter Cr2O3,ThO2 etc. at 440−550oC. CO+H2+H2OFe2O3+Cr2O3−−−−−−−−−→440−550oCCO2↑+2H2

The catalyst used in Bosch process of manufacture of $H_{2}$ is :