Science, asked by PranshuNepal23, 2 days ago

GIVE REASONS:- i) Mercury cannot be in a cold region.
ii) Alcohol thermometers can be used in Antarctica.
iii) Mercury can be used in the thermometer as a thermometric liquid.
iv)Alcohol can be used in the thermometer as a thermometric liquid.
v) Water isn't used as a thermometric liquid.
vi) A clinical thermometer has a kink in as its steam.

Answers

Answered by sagareea
0

Answer:

1) because mercury dissolve everything

2)It's use in Antarctica because it Will not get freeze

5) because water is nonmetal and mercury is metal liquid at room temperature

Answered by pranjalkushwaha297
0

Answer:

i) Mercury cannot be in a cold region.

Answer: Alcohol thermometers are used rather than mercury thermometers in very cold regions because alcohol has a lower freezing point than mercury. Pure ethanol freezes at -115 degrees C, while mercury freezes at -38 degrees C.

ii) Alcohol thermometers can be used in Antarctica.

It's too cold! Mercury freezes (becomes a solid) at about -39°Celsius (-38°Fahrenheit). ... Alcohol thermometers, which use ethanol (not mercury) as their liquid, can be used to efficiently measure temperatures to about -70°Celsius (-94°Fahrenheit). That is still too warm for Antarctica's cold mountain slopes.

iii)Mercury can be used in the thermometer as a thermometric liquid.

Answer:Mercury is used as a thermometric liquid because: It has a lower freezing point (-39°C) and a high boiling point (35°C). Hence it can be used over a wide range of temperature. It is shiny liquid metal, hence can be easily seen through the glass of the thermometer tube.

iv)Alcohol can be used in the thermometer as a thermometric liquid.

Alcohol thermometers are used rather than mercury thermometers in very cold regions because alcohol has a lower freezing point than mercury. Pure ethanol freezes at -115 degrees C, while mercury freezes at -38 degrees C. Thermometers rely upon thermal expansion of the liquid in a bulb at the base of a thin glass tube.

v) Water isn't used as a thermometric liquid.

Water is not able to be used as a thermometer liquid because of its higher freezing point and lower boiling point than the other liquids in general. If water is used in a thermometer, it will start phase variation at 0∘C and 100∘C. This will not help in measuring temperature, beyond this range.

vi) A clinical thermometer has a kink in as its steam.

kink prevents the mercury present in the capillary to fall back in the bulb. So it separates the mercury at high temperature and cool mercury and allows the user to note the reading when the thermometer is taken out.

Explanation:

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