Pick the correct answer for the following.
1. Finish the word equations for the chemical reactions with the help of choices given in the below.
(Air, iron, baking soda, iron oxide, oxygen, carbon dioxide, iron sulphate, copper, magnesium oxide, lime water, carbon dioxide)
i. + Air + Water → .
ii. Vinegar + → Salt + Water +
iii. Magnesium + →
2. Iron material appears with _________ flakes on rusting.