Chemistry Atomic number of an atom gives the number of which of the following ? Neutrons Neutrons and protons Electrons Protons Neutrons Neutrons and protons Electrons Protons ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which of the following is not a precious/semi-precious stone? Sapphire Emerald Ruby Pearl Sapphire Emerald Ruby Pearl ANSWER DOWNLOAD EXAMIANS APP
Chemistry Brass gets discoloured in air due to constant exposure in presence of: Hydrogen sulphide Aluminium phosphide Aluminium sulphide Hydrogenated wafers Hydrogen sulphide Aluminium phosphide Aluminium sulphide Hydrogenated wafers ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following is used to restore the colour of old oilpaintings ? Sodium peroxide Hydrogen peroxide Barium peroxide Ozone Sodium peroxide Hydrogen peroxide Barium peroxide Ozone ANSWER DOWNLOAD EXAMIANS APP
Chemistry Iron is extracted from Haematite Cinnabar Dolomite Bauxite Haematite Cinnabar Dolomite Bauxite ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemical name of vinegar is Ethanol Acetone Acetic acid Formaldehyde Ethanol Acetone Acetic acid Formaldehyde ANSWER DOWNLOAD EXAMIANS APP
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