ECAT Pre Engineering Chemistry Chapter 10 online mcq test with answers for chapter 10 (Electrochemistry)

ECAT Chemistry Chapter 10 Electrochemistry Online Test

Sr. #	Questions	Answers Choice
1	When electric current is used to carry out non-spontaneous redox, the process is called	Hydrolysis Electrolysis Decomposition Neutralization
2	The reaction is galvanic cell is	Spontaneous Non-spontaneous Acid-base None of these
3	When fused PbBr₂is electrolyzed	Bromine appears at he cathode Lead is deposited at the cathode Lead appears at the anode None of these happens
4	If the salt bridge is not used between two half cells, then the voltage	Decrease rapidly Decrease slowly Does not change Drops to zero
5	The electrode through which the electrons enter the electrolytic solution is electrolytic solution is	Anode Cathode May be anode or cathode None of these
6	Which of the following statements is true about Galvanic cell	Anode is negatively charged Reduction occurs at anode Cathode is positively charge Reduction occurs at cathode
7	The cathodic reaction in the electrolysis of dill H₂SO₄with Pt electrodes	Reduction Oxidation Both oxidation and reduction neither oxidation or reduction
8	In the presence of copper electrodes the electrolysis of aqueous CuSO₄produces at cathode	H<sub>2</sub>gas O<sub>2</sub>gas SO<sub>2</sub>gas Cu metal
9	Strong oxidizing agents have	Greater positive value of standard reduction potential Lesser positive value of standard Greater negative value of standard None of these
10		Zn H S O
11	Matals usually conduct electricity because	There are mobile electrons in the metallic structure Metals are decomposed by current Metals have high resistance In metals the ions are free to move
12	A cell in which spontaneous redox reaction generates an electric current is called	Electrolytic cell Electrochemical cell Voltaic or Galvanic cell Biological cell

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