Question : Water is used in a hot water bag because:
Option 1: it is easily available
Option 2: it has high specific gravity
Option 3: it has high specific heat
Option 4: it is a liquid substance
Correct Answer: it has high specific heat
Solution : The correct option is it has a high specific heat.
Water is used in a hot water bag because it has a high specific heat capacity, which allows it to absorb and maintain a substantial quantity of heat energy while only undergoing a minor temperature increase. When put in a hot water bag, this property allows water to give sustained and progressive warmth, making it perfect for medicinal and warming purposes.
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Question : Water is not suitable as a calorimetric substance because it:
Option 1: has high specific heat
Option 2: is a good conductor
Option 3: has high boiling water
Option 4: low latent heat of vapourisation
Question : When a piece of stone is immersed in water, it displaces water of equal
Option 1: density
Option 2: specific gravity
Option 3: mass
Option 4: volume
Question : Vegetables are easily perishable because of their high content of
Option 1: sugars
Option 2: water
Option 3: vitamins
Option 4: enzymes
Question : Ice is packed in sawdust because
Option 1: sawdust will not get melted easily
Option 2: sawdust is a poor conductor of heat
Option 3: sawdust is a good conductor of heat
Option 4: sawdust does not stick to the ice
Question : Surface water is a better source of drinking water because it is poor in
Option 1: Dust
Option 2: Bacteria
Option 3: Arsenic
Option 4: Algae
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