Question

What are the differences between (Write three points for each):
i) Laboratory and Clinical Thermometer
ii) Physical and Chemical Changes

Answer 1

Answer:

Laboratory and Clinical Thermometer.

1. Clinical thermometer is used to measure the human body temperature.
2. A laboratory thermometer is not used for this purpose of measuring body temperature
3. The temperature range of clinical thermometers is 35°C to 42°C
4. The temperature range of laboratory thermometers is -10°C to 110°C

Physical and Chemical Changes

1. Physical changes are reversible in nature, i.e., original substance can be recovered.
2. Chemical changes are irreversible in nature, i.e., original substance cannot be recovered.
3. Physical changes do not have formation of new substances.
4. Chemical change leads to formation of new substances.

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