9th Chemistry MCQs Sindh Board
On this youtube channel you will learn Ninth Class Chapter No.07 electrochemistry. Solved chapter with book exercise MCQs With Solved Answers. If you are looking 9th Class sukkur Sindh Board chemistry Chapter Wise Solved MCQs With Answers You are on this channel "Naz Online Academy ". You will learn online here Objective type IX Class chemistry Solved Unit 7 Most Repeated MCQs with Solved Answers.
::::: Questions solved :::::
Alloy of Cu - Sn is called?
A. Brass
B. Bronze
C. Monet
D. Bell metal
Which one is Alloy?
A. Graphite
B. Mercury
C. Steel
D. water
Value of 1 Faraday is equal to:
A. 9.65 C
B. 9650 C
C. 96500 C
D. 965 C
Which one is non-electrolyte?
A. Aqueous HCI
B. Aqueous Nacl
C. Molten KCI
D. Urea
Which one is oxidizing agent?
A. Al
B. H2S
C. Cl2
D. NaH
Which one is a reducing agent?
A. H2SO4
B. HNO3
C. Al
D. I2
Which one forms a weak electrolyte solution with water?
A. HCl
B. KOH
C. Nacl
D. CH3COOH
In Daniel cell, it is used as a cathode.
A. Zn
B. Cu
C. Sn
D. Pb
1g equivalent weight of Al is equal to:
A. 9 g
B. 27 g
C. 54 g
D. 1 g
Which one is a correct statement?
A. oxidation occurs at the cathode
B. reduction occurs at anode
C. reduction occurs at cathode
D. ions lose electrons at cathode
Electrochemistry deals with the conversion of:
A. electrical energy into chemical energy
B. chemical energy into electrical energy
C. Both of a and b
D. None of the above
From a chemical substance, oxidation may involve:
A.Introduction of oxygen
B. Removal of hydrogen
C. Both a and b
D. None of the above
From a chemical substance, reduction may involve:
A. Removal of Oxygen
B. Addition of Oxygen
C. Removal of hydrogen
D. All of the above
The electrochemical reaction in which atom, molecule or ion loses electrons is called:
A. Reduction reaction
B. Oxidation reaction
C. electrolytic reaction
D. Cathodic reaction
In oxidation reaction, oxidation number :
A. Becomes zero
B. remains the same
C. Decreases
D. Incrcases
Which one of these is a reducing agent?
A. Cl2
B. KMnO4
C. H2SO4
D. Zn
Which one of these is NOT a reducing agent?
A. Zn
B. HNO3
C. Al
D. KH
The reaction occurs at each electrode is called:
A. Zero cell reaction
B. Quarter cell reaction
C. Half cell reaction
D. Full cell reaction
Types of electrochemical cells are:
A. Two
B. Three
C. Four
D. Five
Which of the following is a strong electrolyte?
A. H2C03
B. NH4OH
C. AgCl
D. NaCl
Which of the following is NOT an electrolyte?
A. Benzene
B. Glucose
C. Both a & b
D. None of them
The substance used for electrolysis is called:
A. Electrolyte
B. Cell
C. Electricity
D. None of them
The device that converts chemical energy into electrical energy or electrical energy into chemical energy is called:
A. Electrochemical cell
B. Electrolytic cell
C. Photocell
D. pencil cell
Coulomb (C) = _____________
The mass of the substance liberated or deposited per unit charge that passes is called:
A. Electrochemical equivalent
B. Mass equivalent
C. physio-chemical equivalent
D. Volume equivalent
Quantity of charge which deposits or liberates 1 gm equivalent weight of a substance is called:
A. 1 Farad
B. 1 Ampere
C. 1 Coloumb
D. 1 Faraday
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