Match List-I with List-II. List-I List-II A Cd s + 2 Ni OH 3 s → CdO s + 2 Ni OH 2 s + H 2 O l I Primary battery B Zn Hg + HgO s → ZnO s + Hg l II Discharging of secondary battery C 2 PbSO 4 s + 2 H 2 O I → Pb s + PbO 2 s + 2 H 2 SO 4 aq III Fuel cell D 2 H 2 g + O 2 g → 2 H 2 O l IV Charging of secondary battery Choose the correct answer from the options given below

A - II , B - I , C - IV , C - III

A - I , B - II , C - III , C - IV

A - IV , B - I , C - IV , C - III

A - II , B - I , C - III , C - IV

EASY

Earn 100

In a Leclanche cell, ${MnO}_{2}$ acts as .

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Important Questions on Electrochemistry

MEDIUM

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

Write the equations for the reactions taking place at anode and cathode in the lead-storage battery.

EASY

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

The cathode reaction in the dry cell will be

HARD

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

What type of battery is lead storage battery? Write the anode and cathode reactions and the overall cell reaction occurring in the operation of a lead storage battery.

MEDIUM

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

While charging the lead storage battery

EASY

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

Which of the following statements regarding the Leclanche cell is TRUE?

EASY

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

What is a secondary cell?

MEDIUM

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

What is battery? Give one example each of primary battery and secondary battery.

EASY

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

Mercury cell gives a constant voltage of

1.35 V

during its lifetime. Why?

MEDIUM

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

Which among the following equations represents the reduction taking place in lead accumulator at positive electrode, While it is being used as a source of electrical energy?

HARD

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

Explain the working of Daniel cell with a neat diagram.

EASY

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

Write a short note on secondary batteries.

EASY

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

While giving labelled diagram of dry cell write reactions taking place at cathode and anode.

HARD

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

Write chemical equations for charging and discharging of lead storage cell.

MEDIUM

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

Write the anode and cathode reactions that occur in the operation of a lead storage battery. Mention the electrolyte used in the battery.

MEDIUM

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

On charging of lead storage cell

HARD

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

Match List-I with List-II.

	List-I		List-II
A	$Cd (s) + 2 Ni {(OH)}_{3} (s) \to CdO (s) + 2 Ni {(OH)}_{2} (s) + H_{2} O (l)$	I	Primary battery
B	$Zn (Hg) + HgO (s) \to ZnO (s) + Hg (l)$	II	Discharging of secondary battery
C	$2 {PbSO}_{4} (s) + 2 H_{2} O (I) \to Pb (s) + {PbO}_{2} (s) + 2 H_{2} {SO}_{4} (aq)$	III	Fuel cell
D	$2 H_{2} (g) + O_{2} (g) \to 2 H_{2} O (l)$	IV	Charging of secondary battery