What type of chemical reactions take place when :
(a) a magnesium wire is burnt in air ?
(b) lime-stone is heated ?
(c) silver bromide is exposed to sunlight ?
(d) electricity is passed through water ?
(e) ammonia and hydrogen chloride are mixed ?
When magnesium ribbon is burnt in air, then identify the type of reaction and colour of ash formed.
A magnesium ribbon is burnt in air. A student made the following observations:
i. Magnesium ribbon undergoes oxidation reaction. ii. Magnesium reacts with air to form magnesium oxide. iii. Magnesium ribbon undergoes decomposition reaction.
Which of the following statements is correct?