Chemistry The coating of a thin layer of zinc on steel or iron objects is known as Electroplating Galvanising Tinning Hot dipping Electroplating Galvanising Tinning Hot dipping ANSWER DOWNLOAD EXAMIANS APP
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 blue-black 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 ANSWER DOWNLOAD EXAMIANS APP
Chemistry An electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a : Power transmittor Battery Uninterrupted power supply (UPS) Generator Power transmittor Battery Uninterrupted power supply (UPS) Generator ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metals commonly used for electroplating are Nickel, Lead and Chromium Gold, Sodium and Chromium Chromium, Copper and Nickel Gold, Sodium and Potassium Nickel, Lead and Chromium Gold, Sodium and Chromium Chromium, Copper and Nickel Gold, Sodium and Potassium ANSWER DOWNLOAD EXAMIANS APP
Chemistry In galvanization, iron is coated with Tin Zinc Nickel Copper Tin Zinc Nickel Copper ANSWER DOWNLOAD EXAMIANS APP
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