Acids are used to make aqua regia, which of the following noble metals can be dissolved in it?
Everyday Science / Chemistry — Multiple-choice practice
ایکوا ریگیا بنانے کے لئے تیزاب استعمال کیے جاتے ہیں ، اس میں مندرجہ ذیل نوبل دھاتوں میں سے کون سی تحلیل ہوسکتی ہے؟
- A. Platinum, Palladium, Irridillium
- B. Silver, Osmium, Iridium
- C. None of these
- D. Platinum, Palladium, Gold
Correct answer
Platinum, Palladium, Gold
Explanation
Explanation Aqua regia (a mixture of HCl and HNO₃) is strong enough to dissolve gold, platinum, and palladium. Silver and iridium do not dissolve in aqua regia easily.
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