pls answer these all questions
Answers
Answer:
A mixture contains two or more elements or compounds that are not chemically combined together
Explanation:
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Answer:
1)=In an electric iron the coil of high resistance is kept between mica sheets so that there would not be contact between the coil and the metal block of the iron during heat transfer.This protects us from gettin shock.
2)=As in winters, in cold countries, the temperature of the atmosphere falls down below 0°celsius.Whenever water's temp. fall down below 4°c, the water needs expansion and expands and even if it freezes it acquires more volume and there is no space in pipelines for expansion of water.Hence, the pipelines burst out.
3)=The temp. of boiling water does not increase even if it is boiling because the heat energy provided to boiling water gets consumed in breaking the 'Intermolecular Bond' between the water molecules, and so the energy is not left for making water's temp. changed.Hence, water does not change its temp. even though it is boiling.
I hope these answers are ample for you and would help you.
Thank you.