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Ans: (4) Gamma-rays
Sol. Gamma rays have wavelength about less than 10–10 m to 10–14 m which is shortest wavelength among all options.
Ans is Gama rays ( <10^-3nm )
You can remember it by saying sa re Gama pa dha ni sa.
Which among the following salt solutions is basic in nature? (1) Sodium acetate (2) Ammonium chloride (3) Ammonium sulphate (4) Ammonium nitrate