Question

5. Classify the following processes into two groups and give titles to the groups taking into
account the time required for the processes.
(i) Cooking gas starts burning on ignition.
(ii) Iron article undergoes rusting.
(iii) Erosion of rocks takes place to form soil.
(iv) Effervescence is formed on adding baking soda into a test tube containing
dilute acid.
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Answer 1

Answer

fast reaction :

1. Cooking gas starts burning on ignition .

2. Effervescence is formed in adding balling soda into a test tube containing dilute acid

Slow reaction :

1. Iron articles undergoes rusting

2. Erosion of rocks takes place to form soil

HOPE IT HELPS YOU !!!!!!

Answer 2

Answer:

Take into account the time required for following processes.

Classify them into two groups and give titles to the groups.