Chemistry A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? From brown to orange-red From blue to pink From pink to blue-green From brown to blue-black From brown to orange-red From blue to pink From pink to blue-green From brown to blue-black ANSWER DOWNLOAD EXAMIANS APP
Chemistry Stains of rust on clothes can be removed by : H2O2 Alcohol Oxalic acid Petrol H2O2 Alcohol Oxalic acid Petrol ANSWER DOWNLOAD EXAMIANS APP
Chemistry A substance which readily forms colloidal solution in contact with water is called Hydrophilic colloid Hydrophobic colloid Associated colloid Extrinsic colloid Hydrophilic colloid Hydrophobic colloid Associated colloid Extrinsic colloid ANSWER DOWNLOAD EXAMIANS APP
Chemistry The hardest form of carbon is graphite charcoal diamond coke graphite charcoal diamond coke ANSWER DOWNLOAD EXAMIANS APP
Chemistry Chemically ‘Quick Silver is known as Mercury Aluminium Silver Copper Mercury Aluminium Silver Copper ANSWER DOWNLOAD EXAMIANS APP
Chemistry The substance which does not expand on going from liquid state to solid state is Type metal Water Cast-iron Aluminium Type metal Water Cast-iron Aluminium ANSWER DOWNLOAD EXAMIANS APP
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