Copper is displaced from the solution of its salts by most metals because it?
A. is a transition element B. is at the bottom of the activity series C. is very reactive D. has completely filled 3d-orbitals Correct Answer: Option B – is at the bottom of the activity series
A metal that forms soluble trioxosulphate (IV) ion is?
A. barium B. potassium C. manganese D. aluminium Correct Answer: Option B = potassium
Sulphur(IV)oxide is a strong reducing agent in the presence of water due to the formation of?
A. hydroxide ion B. sulpgur (Vl)oxide C. hydrogen sulhide D. trioxosulphate (IV) salt Correct Answer: Option D – trioxosulphate (IV) salt
Which of the gases is employed as an anaesthesia?
A. N2O B. NO2 C. NH3 D. NO Correct Answer: Option A – N2OProducts
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