Copper (II) tetraoxosulphate (IV) is widely used as a?
fertilizer
fungicide
disinfectant
purifier
Correct answer is B
No explanation has been provided for this answer.
Copper and mercury
Silver and copper
Mercury and silver
Magnesium and mercury
Correct answer is C
No explanation has been provided for this answer.
KOH
NaOH
Ca(OH)2
AI(OH)3
Correct answer is C
No explanation has been provided for this answer.
zinc is amphoteric
zinc hydroxide is readily soluble
zinc forms a complex which is readily soluble in excess ammonia
ammonia solution is a strong base
Correct answer is C
No explanation has been provided for this answer.
Oxygen gas can be prepared by heating?
ammonium trioxonitrate (V)
ammonium trioxonitrate (III)
ppotassium trioxonitrate (V)
mamgamese (IV) oxide
Correct answer is C
No explanation has been provided for this answer.