Chemical change does not take place in case of
1 Souring of milk into curd
2 Rusting of iron in atmosphere
3 Burning of magnesium ribbon in air
4 emitting of light by a red hot platinum wire
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(4) emitting of light by a red hot platinum wire
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Old-written material, which cannot be read easily, can be read by 1 Cosmic rays 2 Ultraviolet rays 3 Infra red rays 4 None of these
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The location and energy of an electron in an atom can be specified by 1 Atomic mass 2 Atomic number 3 Quantum numbers 4 None of these
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Of the various forms of carbon, the one which is used for adsorption purpose, is 1 Diamond 2 Graphite 3 Coke 4 Wood charcoal
Brass gets discolored in air because of the presence of which of the following gases in air? 1 Carbon dioxide 2 Oxygen 3 Hydrogen sulphide 4 Nitrogen
What ate the most essential parts of the human body ?
2 Answers State Bank Of India SBI,
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‘Saponification involves the hydrolysis of fats and oils by 1 Water 2 Washing soda 3 Stearic acid 4 Caustic soda