1. Conductors: Copper, aluminum and iron. Insulators: Wood, water and air. https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-4/

    Conductors: Copper, aluminum and iron.
    Insulators: Wood, water and air.

    https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-4/

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  2. Similarities: • Working principle of both the thermometer is same. • Both are used to measure temperature. • Both have a thick walled glass tube enclosing a fine uniform bore capillary tube. • Mercury is used in both thermometers to measure temperature. • Both have Celsius and Fahrenheit markings. DRead more

    Similarities:
    • Working principle of both the thermometer is same.
    • Both are used to measure temperature.
    • Both have a thick walled glass tube enclosing a fine uniform bore capillary tube.
    • Mercury is used in both thermometers to measure temperature.
    • Both have Celsius and Fahrenheit markings.
    Differences:
    • Laboratory thermometer is used to measure temperature of different objects in factories and laboratory where as clinical thermometer is used to measure the temperature of human beings only.
    • Generally, laboratory thermometer has temperature range from −10℃ to 110℃ where as clinical thermometer has temperature range from 35℃ to 42℃.
    • Usually laboratory thermometer does not have any constriction where as clinical thermometer has the small constriction near the mercury bulb.
    • Laboratory thermometer has to be kept upright while taking the reading where as clinical thermometer can be tilted while taking reading.

    https://www.tiwariacademy.com/ncert-solutions/class-7/science/chapter-4/

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