Answer:
This is true.
Explanation:
Magnetization of iron is a physical change and not a chemical change as there is no change of state, no change of temperature, no smell and no evolution of gas.
I believe 3 would be C and D, and 4 would be B
25 °c is the higher temperature.
Hope This Helps You!
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It’s a liquid cause liquid move past one another
Please see the answer here
http://www.wolframalpha.com/input/?i=1.1%20grams%20of%20Ra%28OH%292