PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoGive brief answers to the following questions:
1. Paheli prepared a blue coloured solution of copper sulphate in beaker A and placed an iron nail in it. Boojho prepared a yellowish green solution of ferrous sulphate in beaker B and placed a copper wire in it. What changes will they observe in the two beakers after an hour?
In beaker A1, a layer of copper will deposit on the iron nail, and blue coloured solution of copper sulphate will become due to the formation of iron sulphate. This is because iron is more reactive than copper, displacing copper from its salt solution (copper sulphate solution). In beaker B1, no change is observed because copper, less reactive, does not displace iron (more reactive) from ferrous sulphate solution.
2. A doctor prescribed a tablet to a patient suffering from iron deficiency. The tablet does not look like iron. Explain.
Iron is a metal but the tablet is not made up of . It is made up of a salt of iron. So, it does not look like .
Register for free to see more content