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 2 Solutions 1 Mark Questions
Last modified on:5 years agoReading Time:9Minutes1. Define the term –solubility? Ans. The maximum amount of a substance that can be dissolved in a specified amount of solvent is called its solubility. 2. What is the effect of pressure on solubility of a gas? Ans. The solubility of a gas increases with increases of pressure. 3. State Henry’s Law.…
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Important Questions Class 12 Chemistry Chapter 12 – Aldehydes Ketones and Carboxylic Acids 1 Mark Questions
Last modified on:5 years agoReading Time:5Minutes1. Give one use of Formalin. Ans. Formalin is used as a disinfectant, preservative for biological specimens and in leather industry. 2. What is the chemical name of Tollen’s reagent and Fehling’s solution. Ans. Tollen’s reagent = Ammoniacal Silver Nitrate Fehlings solution = Sodium Potassium Tartarate. 3. Write the structure of alkenes…
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Important Questions Class 12 Chemistry Chapter 11 Alcohols, Phenols and Ethers 1 Mark Questions
Last modified on:5 years agoReading Time:4Minutes1. Write IUPAC names of :- i. Ans. 5 – Methyloctan-3-ol ii. Ans. 1-Chloro propan-2-ol iii. Ans. Pentan – 1,3,4 – triol iv. Ans. 2 – Methylpropan -2-ol v. Ans. 1,3 – Dibromo – 4- chloro – 2- butanol vi. Ans. 5 – Chloro – 4 – ethyl – 5- methyl hexanol. vii. Ans. 2 – Phenyl ethanol…
