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When hot-water is sprinkled on a hotter glass tumbler, it breaks because

When hot-water is sprinkled on a hotter glass tumbler, it breaks because Correct Answer Glass suddenly contracts

If the poured liquid is relatively hotter or colder in comparison to the tumbler, it will break. When hot water is poured into a tumbler there is an uneven increase in the thermal expansion of the walls of the vessel.

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When hot liquid is poured into a thick glass tumbler, it cracks because glass :
When hot liquid is poured into a thick glass tumbler, it cracks because glass
Two equal glasses are respectively 1/3 and 1/4 full of milk, They are then filled up with water and the coutents mixed in a tumbler .What is the ratio of milk and water in the tumbler?