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Sol-gel method is known since ____________(a) 1970(b) 1960(c) 1980(d) 1990The question was asked in an interview for internship.Asked question is from Sol-Gel Method and Chemical Reduction Method in section Nano Materials of Applied Chemistry

Answer» CORRECT option is (c) 1980

Best EXPLANATION: Sol-gel METHOD is known since 1980s. The technic is rediscovered in early 1970s when the glasses were PRODUCED without high temperature melting processes.


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