Question

Fill in the blanks in the following statements:​

(a) When carbon dioxide is passed through lime water, it turns milky due to the formation of
(b) The chemical name of baking soda is
(c) Two methods by which rusting of iron can be prevented are and
(d) Changes in which onlyproperties of a substance change are called physical changes.
(e) Changes in which new substances are formed are called changes.​

Answer 1

(a)

Lime water milky:
$C{O}_2+\text{Lime water}\left[Ca\right(OH{)}_2]\to \text{Calcium carbonate}(CaC{O}_3\left)\right[\text{White}]+\text{[water]}(H_{2}O)$

(b)
$NaHC{O}_3$
(c)

• The method of prevention of corrosion of iron articles by applying a thin coating of zinc is known as galvanisation​

(d)

(e)