When wax is burnt (in the form of a wax candle), then water and carbon dioxide are formed. This shows the "change in state" characteristic of reactions. State true or false.

True

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False

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Solution

The correct option is A
True

Wax is a liquid whereas carbon dioxide is a gas. This means that during the combustion reaction of wax, the physical state changes from solid to liquid and gas. Therefore, this shows "change in state" characteristic of reactions.

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Similar questions

(a) State the various characteristics of chemical reactions.

(b) State one characteristic each of the chemical reaction which takes place when :
(i) dilute hydrochloric acid is added to sodium carbonate

(ii) lemon juice is added gradually to potassium permanganate solution

(iii) dilute sulphuric acid is added to barium chlorid solution

(iv) quicklime is treated with water

(v) wax is burned in the form of a candle

STATE the characteristics of the chemical reaction which takes place when :

A) dil.hydrochloric acid is added to sodium carbonate

B) dil.sulphuric acid is added to barium chloride solution

C) wax is Burnes in the form of candle

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