CLASS 8

Hello students Here i  this video i have explained how to take out infinite rational between two rational numbers 

Hello friends This is Class 8 Science Biology Chapter 2  Miroorganisms friends and foe Fun learning With visuals and pictures This is part 1 of this chapter Thanks  Stay tuned

A sentence  is a unit of grammar. Typically, in writing, it begins with a capital letter and ends with a full stop. Sentence structures There are three types of sentence structures: simple, compound and complex. Simple sentences Simple sentences have only one main clause : We’re going on holiday tomorrow .  (one main clause) I’m not keen on musicals . Compound sentences Compound sentences have two or more main clauses, joined by a coordinating conjunction: I phoned her  but  she wasn’t there . Are you coming  or  are you staying at home  or  will you go and see Mum ? Complex sentences Complex sentences have a main clause and one or more subordinate clauses, introduced by a subordinating conjunction (The main clause is in  bold ; the subordinate clause is  underlined .): You can call me   if you have any problems . I got up earlier than usual   because I had to get the 6.30 train . Although it hurt when she bent her wrist ,  she could still move her fingers . Types of sentence There are

Chapter – 3  Synthetic Fibres and Plastics  • Synthetic fibres and plastics, like natural fibres, are made of very large units called  polymers. Polymers are made up of many smaller units. Polymers are made up of many  smaller units.  • While natural fibres are obtained from plants and animals, synthetic fibres are obtained  by chemical processing of petrochemicals. Like natural fibres, these fibres can also be  woven into fabrics.  • Synthetic fibres find uses ranging from many household articles like ropes, buckets,  furniture, containers, etc. to highly specialized uses in aircrafts, ships, spacecrafts,  healthcare, etc.  • Depending upon the types of chemicals used for manufacturing synthetic fibres, they are  named as Rayon, Nylon, Polyester and Acrylic.  • The different types of fibres differ from one another in their strength, water absorbing  capacity, nature of burning, cost, durability, etc.  • Today, life without plastics cannot be imagined. Be it home, or outside, plastic i

FRICTION MULTIPLE CHOICE QUESTIONS 1.    Complete the sentence. Friction always ____________        a. helps the motion        b. opposes the motion        c. both of these        d. none of these 2.    Which one of these characteristics does a smooth surface has?        a. Less frictional force        b. More frictional force        c. Sometimes less and sometimes more force        d. All of above 3.    Friction is a __________        a. Contact force        b. Non-contact force        c. Magnetic force        d. None of these 4.    What kind of substances are known as lubricants        a. Increase friction        b. Decrease friction        c. Increase or decrease friction        d. None of these 5.    Fluid are____        a. Gases        b. Liquids        c. Gases and liquids both        d. None of these 6.    On what force of friction depends?        a. Smoothness of surface        b. Roughness of surface        c. Inclination of surface        d. Al of above 7.    Friction is a /a