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| List-$I$ (यौगिक) | List-$II$ (उपयोग) |
| $A$. $BaSO_4 + ZnS$ | $1$. विस्फोटक |
| $B$. $NI_3$ | $2$. रॉकेट प्रणोदक में ऑक्सीकारक |
| $C$. $N_2O_4$ | $3$. अंतरिक्ष कैप्सूल |
| $D$. $KO_2$ | $4$. वर्णक (पिगमेंट) |
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