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Doctors Medicines MCQs Q&A

  1. Only A
  2. Only B
  3. Both A and B
  4. Neither A nor B
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1 Answers

Option 3 : Both A and B

The correct answer is Both A and B.

Concept:

Conductivity in aqueous solutions:

  • It is a measure of the ability of water to conduct an electric current.
  • The more ions there are in the solution, the higher its conductivity.

Electrolyte:

  • Electrolytes are salts or molecules that ionize completely in solution. As a result, electrolyte solutions readily conduct electricity.
  • A strong electrolyte is one where many ions are present in the solution and a weak electrolyte is one where few ions are present.

Non-electrolytes:

  • They do not dissociate into ions in solution.
  • Therefore, they do not conduct electricity.

Explanation:

  • The tester can be used to determine whether a liquid allows an electric current to pass through it or not.
  • Before using the tester, We will also test whether it is working or not
  • When the fluid between the two ends of the tester allows an electric current to flow through it, the circuit of the tester is complete.
  • A current flows through the circuit, and the bulb lights up.
  • When a liquid does not allow the electric current to flow through it, the circuit of the tester is broken and the bulb does not light up.
  • Even if the liquid is a conductor, it is possible that the bulb will not light in some cases, indicating that the electric current in the tester is very weak.

Since the bulb in the tester did not glow -

(A) The circuit of tester remained incomplete - True

(B) The current through the tester was too weak - True

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