PDF chapter test TRY NOW
1. Identify the changes involved in the following processes as physical or chemical changes.(a) Evaporation of petrol
.
Petrol evaporation is not a process (no new product is formed). It only gets converted from one physical state to another. Hence, it is a .
2. During the reaction of some metals with dilute hydrochloric acid, following observations were made.
Explain these observation giving suitable reason.
(a) Silver metal does not show any change.
(a) Silver metal does not show any change.
Because silver is than hydrogen, it does not show any change. It is incapable of removing from dilute hydrochloric acid.
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