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प्रश्न
Shopkeepers selling ice blocks usually cover them with jute sacks. Explain why.
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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
An iron ball at 40°C is dropped in a mug containing water at 40°C.
The heat will ______.
Fill in the blank:
The thermometer used to measure the human body temperature is called the ........... thermometer.
Fill in the blank:
The normal temperature of human body is ............ °C or...........°F.
A thermometer is graduated in ______.
What is a clinical thermometer? State its special feature. Draw a labelled neat diagram of a clinical thermometer showing the range of temperature marked on it.
State if the following statement is true or false. Correct the statement if it is false.
Water is the most commonly used thermometric substance.
Answer the following in short.
Why is there a slight bend in the capillary tube of a clinical thermometer near the bulb?
At room temperature Mercury is in ______ state.
Swathi kept a laboratory thermometer in hot water for some time and took it out to read the temperature. Ramani said it was a wrong way of measuring temperature. Do you agree with Ramani? Explain your answer.
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.
