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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.



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:upto college level

1 Answers

Deepak Patra
askIITians Faculty 471 Points
7 years ago

(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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