Teaching Rajasthan 3rd Grade REET Mains (Level I & II) Mock Test General Science Chemistry Organic Chemistry

অ্যাকোয়া রেজিয়া কীসের মিশ্রণ?

1
HNO3 এবং H2SO4
2
HCl এবং H2SO4
3
HNO3 এবং CH3COOH
4
HCl এবং HNO3
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