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प्रश्न
Shopkeepers selling ice blocks usually cover them with jute sacks. Explain why.
उत्तर
Shopkeepers selling ice blocks usually cover them with jute sacks because jute sack is an insulating material so it prevents ice from melting at a faster rate.
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संबंधित प्रश्न
Temperature is measured in degree ______.
An iron ball at 40°C is dropped in a mug containing water at 40°C.
The heat will ______.
What does the temperature measure?
Tick the most appropriate answer.
The maximum and minimum thermometer is commonly used by a
Fill in the blank.
The lower fixed point in a laboratory thermometer is the same as that of ................
Fill in the blank.
The temperature at which water freezes is known as ..................
International unit of measuring temperature is ______.
The freezing point of alcohol is less than ______.
Go to a doctor or your nearest health centre. Observe the doctor taking the temperature of patients. Enquire:
- Why she dips the thermometer in a liquid before use.
- Why the thermometer is kept under the tongue.
- Whether the body temperature can be measured by keeping the thermometer at some place other than the mouth.
- Whether the temperature of different parts of the body is the same or different.
You can add more questions which come to your mind.
Go to a veterinary doctor (a doctor who treats animals). Discuss and find out the normal temperature of domestic animals and birds.
