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प्रश्न
Does pure water conduct electricity? If not, what can we do to make it conducting?
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उत्तर
Pure water does not conduct electricity because essential mineral salts are not found in pure water. To make pure water a conductor of electricity, we add dilute sulphuric acid or salt to it. These are added as impurities in water, due to which these substances combine with water and produce ions, and thus the water conducts electricity.
संबंधित प्रश्न
Most liquids that conduct electricity are solutions of ________, _______ and ________.
When the free ends of a tester are dipped into a solution, the magnetic needle shows deflection. Can you explain the reason?
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Which one of the following solutions will not conduct electricity?
Observe the circuit given in the figure.
Boojho set up this circuit for purification of copper. What will be the nature of – (i) plate A (ii) plate B (iii) and the solution.
Explain the process of purification.
Observing that the bulb does not glow in the circuit shown in the following figure A, Boojho changed the circuit as shown in the following figure B. He observed deflection in the magnetic compass.
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| A | B |
- What does the deflection in magnetic compass indicate?
- Why did the bulb not glow in the following figure A?
- What would be the effect of increase in the number of turns in the coil wound around the magnetic compass in the following figure B?
- What will be observed if the number of cells are increased in the circuit shown in the following figure B?
