What is meant by strong electrolyte? [2]
OR
What are meant by cathode and anode electrodes? [2]
WBBSE
Class X
Physical Science
Electrolysis
02 Mark
2022
Strong Electrolyte
A substance that completely dissociates into ions in water and conducts electricity very well is called a strong electrolyte.
Examples – sodium chloride (NaCl) and potassium nitrate (KNO₃).
Cathode and Anode
The electrode where reduction takes place and which attracts cations during electrolysis is called the cathode.
The electrode where oxidation takes place and which attracts anions during electrolysis is called the anode.
Related Questions
More WBBSE Easy level questions
1/12
Q.
Which gas is produced at the cathode during electrolysis of acidified water?
A.
Hydrogen. Explanation: In electrolysis of acidified water with Pt electrodes, H⁺ ions...
Q.
State True or False: Electrolysis always involves the process of oxidation-reduction.
A.
True. Explanation: Electrolysis drives chemical reactions using electrical energy, involving oxidation at...
Q.
Which acid is a weak electrolyte? (a) CH₃COOH (b) H₂SO₄ (c) HNO₃ (d) HCl
A.
(a) CH₃COOH Explanation: Electrolytes are classified as strong or weak based on...
Q.
Write the names of two bio-degradable polymers.
A.
Examples of biodegradable polymers : Polylactic acid (PLA) Polyhydroxybutyrate (PHB)
Q.
Name two copper containing alloys. State one use of each alloy.
A.
Two copper alloys: Copper Alloy Composition Uses Brass Copper (Cu): 60–80% Zinc...
Q.
What happens when an iron spoon is dipped into acidified copper sulphate solution?
A.
When an iron spoon is dipped into acidified copper sulphate solution, a...
Q.
Explain the difference between minerals and ores.
A.
Minerals Ores Minerals are naturally occurring substances found in the Earth’s crust....
Q.
What is now used in electrical circuits instead of fuse wire?
A.
MCB / Miniature circuit breaker
Q.
What type of lens is used as a magnifying glass?
A.
Convex lens Explanation: Convex lens forms virtual, erect, magnified image for objects...
Q.
Name the greenhouse gas discharged from a refrigerator.
A.
CFC / HFC
Q.
Which layer of atmosphere is susceptible to storm and rain?
A.
Troposphere Explanation: Troposphere is the lowest layer nearest to Earth's surface, where...
Q.
Which metal is used as catalyst in Haber’s process for preparation of ammonia?
A.
The metal used as a catalyst in the Haber’s process for the...