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Question 3: 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 only _____ __ properties of a substance change are called physical changes. (e) Changes in which new substances are formed are called _________changes.

Question 3: 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 only _____ __ properties of a substance change are called physical changes.
(e) Changes in which new substances are formed are called _________changes.

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 60796 Points
one year ago
Answer:(a) When carbon dioxide is passed through limewater, it turns milky due to the formation of calcium carbonate (CaCO3) . (b) The chemical name of baking soda is sodium hydrogen carbonate. (c) Two methods by which rusting of iron can be prevented are galvanization and painting. (d) Changes in which only physical properties of a substance change are called physical changes. (e) Changes in which new substances are formed are called chemical changes.

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