Question

Assertion: For measuring resistance of an ionic solution an AC source is used.
Reason: Concentration of ionic solution will change if DC source is used. [NCERT Exemplar]

Answer 1

Answer:

Both assertion and reason are correct and reason is the correct explanation of assertion. Concentration of ionic solution changes on using DC current as a source of energy while on passing AC current concentration does not change Hence AC source is used for measuring resistances.

Answer 2

A correct option is an option (a) that ''The assertion is correct and the reason is the correct explanation of the assertion''.

The reason why it is correct:

• The concentration of the ionic solution changes when a DC source is utilized as a power source. Using AC current, on the other hand, has no effect on concentration. Thus, resistances are measured using an AC source.

• The solution's composition changes when direct current (DC) flows through it, which is the first issue. The second issue is that an ionic solution cannot be connected to the bridge in the same way that a metallic conductor can.

• Ionic substances can therefore carry electricity while they are molten. When dissolved in water, they will separate into their individual ions, which have the ability to conduct electricity (as they may move around freely, being electrolytes in solution).

The complete question is ''For measuring the resistance of an ionic solution, an AC source is used. Reason Concentration of ionic solution will change if DC source is used.

(a) Both Assertion and Reason are correct and Reason is the correct explanation for Assertion, (b) Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion, (c) Assertion is correct but Reason is incorrect, (d) Both Assertion and Reason are incorrect.

Learn more about conductivity:

1. Read the given passage and answer question 1 to

https://brainly.in/question/14319132?referrer=searchResults

2. What are the problems faced in measuring R of ionic solutions and are they overcame

https://brainly.in/question/18724539?referrer=searchResults

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