Which of the following is used in the acid treatment of stainless steel and as a rocket propellant?
- A$HNO_3$
- B$H_2SO_4$
- C$HCl$
- D$H_3PO_4$
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Similar Questions
Match List-$I$ with List-$II$ and select the correct answer using the codes given below the lists.
List-$I$ (Compounds) List-$II$ (Used in) $A$. $BaSO_4 + ZnS$ $1$. Explosive $B$. $NI_3$ $2$. Oxidiser in rocket propellants $C$. $N_2O_4$ $3$. Space capsule $D$. $KO_2$ $4$. Pigment
| List-$I$ (Compounds) | List-$II$ (Used in) |
| $A$. $BaSO_4 + ZnS$ | $1$. Explosive |
| $B$. $NI_3$ | $2$. Oxidiser in rocket propellants |
| $C$. $N_2O_4$ | $3$. Space capsule |
| $D$. $KO_2$ | $4$. Pigment |
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