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Atoms are composed of
1 Electrons only
2 Protons only
3 Electrons and protons
4 Electrons and nuclei
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In a fast breeder reactor, U-238 gets converted to 1 U-235 2 U-237 3 Co-60 4 Plutonium-239
The filament of an electric bulb is made of 1 Iron 2 Nichrome 3 tungsten 4 Graphite
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In laundry soaps, a material called ‘filler’ is used. Which of the following is a ‘filler? 1 Talc 2 Sodium silicate 3 Soda ash 4 Sodium phosphate
Biological Sciences 
