Which of the following statement is correct ?A. The triple point of water is `253.16 K`.B. Burns from steam are less severe than those from boiling water.C. Ethyl alcohol expands less than mercury for the same rise in temperature.D. When fully inflated ballon is immersed in cold water, it will contract.

Which of the following statement is correct ?A. The triple point of wa

1.	Which of the following statement is correct ?A. The triple point of water is `253.16 K`.B. Burns from steam are less severe than those from boiling water.C. Ethyl alcohol expands less than mercury for the same rise in temperature.D. When fully inflated ballon is immersed in cold water, it will contract.
Answer» Correct Answer - D The triple point of water is `273.16` K. Hence, option (a) is an incorrect statement. Burns from steam are more serious than those from boiling water. Hence option (b) is an incorreect statement. The coefficient of volume expansion of mercury and ethyl alcohol are `18.2 xx 10^(-5) K^(-1)` and `110 xx 10^(-5) K^(-1)` respectively. Since coefficient of volume expansion for ethyl alcohol is more than mercury therefore, ethyl alcohol expands more than mercury for the same rise in temperature. Hence option (c ) is an incorrect statement. When fully inflated ballon is immersed in cold water it would start shrinking due to contraction of the air inside. Hence, option (d) is incorrect statement.

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