Question

Which of the following may not be followed by a chemical reaction?1) Change in smell 2)Change in colour 3)Change in temperature 4)Change in physical state and size ​

Answer 1

Answer:

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Answer 2

Answer:

Some industrial items which use microprocessors technology include: cars, boats, planes, trucks, heavy machinery, elevators, gasoline pumps, credit-card processing units, traffic control devices, computer servers, most high tech medical devices, surveillance systems, security systems, and even some doors with automatic ...