A beaker is completely filled with water at 40 C- It will overflowA- both when heated or cooledB- when heated- but not when cooledC- when cooled- but not when heatedD- neither when heated nor when cooled

The correct option is A both when heated or cooled Water will overflow, both when heated or cooled because water has maximum density at 4^0C or minimum vol ...

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Standard XII

Chemistry

Raoult's Law

A beaker is c...

Question

A beaker is completely filled with water at $4^{0}$ C. It will overflow

when heated, but not when cooled

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when cooled, but not when heated

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both when heated or cooled

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neither when heated nor when cooled

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Solution

The correct option is A
both when heated or cooled

Water has maximum density at $4^{0}$ C or minimum volume at $4^{0}$ C so if the water is heated above $4^{0}$ C or cooled below $4^{0}$ C density decreases i.e., volume increases. In other words, it expands so it overflows in both cases.

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A beaker is completely filled with water at 40C. It will overflow

The correct option is A both when heated or cooled Water has maximum density at 40C or minimum volume at 40C so if the water is heated above 40C or cooled below 40C density decreases i.e., volume increases. In other words, it expands so it overflows in both cases.

A beaker is completely filled with water at $4^{0}$ C. It will overflow

The correct option is A
both when heated or cooled

Water has maximum density at $4^{0}$ C or minimum volume at $4^{0}$ C so if the water is heated above $4^{0}$ C or cooled below $4^{0}$ C density decreases i.e., volume increases. In other words, it expands so it overflows in both cases.