Table of Contents
Charging of Insulators
Since charge cannot flow through insulators, neither conduction nor induction can be used to charge, insulators, so in order to charge an insulator friction is used. Whenever an insulator is rubbed against a body exchange of electrons takes place between the two. This results in appearance of equal and opposite charges on the insulator and the other body. Thus the insulator is charged.
For example rubbing of plastic with fur, silk with glass causes charging of these things.
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Important Questions Class 12 Chemistry Chapter 5 Surface Chemistry 1 Mark Questions
Last modified on:5 years agoReading Time:9Minutes1. What do you mean by the term –Adsorption ? Ans. The accumulation of molecular species at the surface rather than in bulk of a solid liquid is termed as Adsorption. 2. Explain the terms – Adsorbate and Adsorbent with examples Ans. The molecular species which get concentrated or accumulated at the…
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Important Questions Class 12 Chemistry Chapter 4 Chemical Kinetics 1 Mark Questions
Last modified on:5 years agoReading Time:9Minutes1. Is rate of reaction always constant? Ans. No. rate of a reaction is not always constant. It depends on many factors such as concentration, temperature etc. 2. Can order of reaction be zero? Give example. Ans. Yes, decomposition of ammonia on a hot platinum surface is a zero order of reaction at…
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Important Questions Class 12 Chemistry Chapter 3 Electrochemistry 1 Mark Questions
Last modified on:5 years agoReading Time:12Minutes1. Can you store AgCl solution in Zinc pot? Ans. No. We can’t store AgCl solution in Zinc pot because standard electrode potential of Zinc is less than silver. 2. Define the term – standard electrode potential? Ans. When the concentration of all the species involved in a half-cell is unity, then the…
