SSC SSC CHSL (Tier I & Tier II) Mock Test Series 2025 (New) General Science Chemistry Basic Concepts of Chemistry

'गुणित अनुपात का नियम' किसने दिया था?

1
अवोगाद्रो
2
गे ल्युसैक 
3
जॉन डाल्टन
4
जोसेफ प्राउस्ट
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