Calcium reacts with cold water to produce hydrogen.
Lead reacts slowly when heated in air to form an oxide but has almost no reaction with steam.
Silver does not react with either air or water.
Zinc reacts when heated with steam to produce hydrogen.
What is the order of reactivity starting with the least reactive?
1 )
A
2 )
B
C
4 )
D
تحلیل ویدئویی تست
منتظریم اولین نفر تحلیلش کنه!