Chemistry The coating of a thin layer of zinc on steel or iron objects is known as Electroplating Hot dipping Galvanising Tinning Electroplating Hot dipping Galvanising Tinning 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 blue to pink From pink to blue-green From brown to orange-red From brown to blue-black From blue to pink From pink to blue-green From brown to orange-red 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 : Uninterrupted power supply (UPS) Battery Power transmittor Generator Uninterrupted power supply (UPS) Battery Power transmittor Generator ANSWER DOWNLOAD EXAMIANS APP
Chemistry The metals commonly used for electroplating are Nickel, Lead and Chromium Gold, Sodium and Potassium Chromium, Copper and Nickel Gold, Sodium and Chromium Nickel, Lead and Chromium Gold, Sodium and Potassium Chromium, Copper and Nickel Gold, Sodium and Chromium ANSWER DOWNLOAD EXAMIANS APP
Chemistry In galvanization, iron is coated with Copper Zinc Tin Nickel Copper Zinc Tin Nickel ANSWER DOWNLOAD EXAMIANS APP
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