पर्यावरण रसायन विज्ञान प्रश्न 2
प्रश्न: पोटेशियम नाइट्रेट, पिसा हुआ चारकोल और सल्फर के मिश्रण को क्या कहा जाता है?
विकल्प:
A) काँच
B) सीमेंट
C) पेंट
D) गन पाउडर
Show Answer
उत्तर:
सही उत्तर: D
BETA
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