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

HARD

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During the discharging of a lead storage battery the reaction occurring at anode is represented by:-

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Important Questions on Electrochemistry

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?

EASY

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

In a typical fuel cell, the reactants (R) and product (P) are :-

EASY

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

For a fuel cell, which statement is correct?

HARD

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

Draw a neat labelled diagram of lead storage cell and write the reactions taking place at both the electrodes during discharging of the cell.

EASY

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

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

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

Choose the correct answer from the options given below

EASY

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

In a hydrogen-oxygen fuel cell, the combustion of hydrogen occurs to

EASY

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

In lead storage cell _____ works as electrolyte.

MEDIUM

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

For lead storage battery pick the correct statements

A. During charging of battery, ${PbSO}_{4}$ on anode is converted into ${PbO}_{2}$

B. During charging of battery, ${PbSO}_{4}$ on cathode is converted into ${PbO}_{2}$

C. Lead storage battery consists of grid of lead packed with ${PbO}_{2}$ as anode

D. Lead storage battery has $~ 38 %$ solution of sulphuric acid as an electrolyte

Choose the correct answer from the options given below:

MEDIUM

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

What is the density of a solution of sulphuric acid used as an electrolyte in lead accumulators?

HARD

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

Draw a neat labelled diagram of a Dry cell and write the cell reactions taking place at both the electrodes.

EASY

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

The cathode reaction in the dry cell will be

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

Draw a neat labelled diagram of

H_{2} - O_{2}

fuel cell. Write the reaction which occurs at cathode of the cell?

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

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

HARD

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

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

EASY

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

A device that converts energy of combustion of fuels like hydrogen and methane, directly into electrical energy is known as:

MEDIUM

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

On charging of lead storage cell

EASY

Chemistry>Physical Chemistry>Electrochemistry>Common Types of Cells

Which colourless gas evolves when

{NH}_{4} Cl

reacts with zinc in a dry cell battery ?

During the discharging of a lead storage battery the reaction occurring at anode is represented by:-

Important Questions on Electrochemistry

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