PDF chapter test TRY NOW
- Take \(100\) ml of hot water in a glass jar.
- Add \(50\) gram of maida in the hot water and stir it well.
- A paste like substances are formed.
- Add a small quantity of copper sulphate for a long use.
- Now you test this paste by binding your damaged book.
Important!
This is a project work. Student only should work.
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