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See all series and all notes on Exponent and power https://drive.google.com/file/d/1ARn8rq5ib0Excr6ejeJnPDAKXf41xHZk/view?usp=drivesdk For better experience click on that link 🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕🖕 My website 1 Exponent and Powers Introduction An expression that consists of a repeated power of multiplication of the same factor is called power /Exponent/Indices. Exponent Example = ​2×2×2×2×2=​25​. Here 2 is the base​​and five is the Exponent​ or power. And the complete number is called exponential​ form For example:- Mass of the sun 2000000000000000000000000000000 = 2×10​30.​ We read 2×10​30 as​​2 × 10 raised to the power 30 Types of Exponents Exponents can be divided into four types based on the number in the power. They are: Positive exponent Negative exponent Zero exponent Rational exponent or fractional exponent Positive exponent For any non-zero rational number a and a positive integer n​a raised to the power n represents a positive exponent Example = {1}​(8)

Answer these questions: 1. Which are the highest ranks in Army, Air Force and Navy ? Answer 👉 _______________________• 2. Name the three wings of defence forces. Answer 👉_______________ 3. Where is the Naval Training Centre INS Mandovi situated ? Answer 👉 ___________________• 4. At which place are the headquarters of all the three forces located  Answer 👉 _______________• 5. Where is the Indian Naval Academy situated? Answer 👉 _____________• 6. What is BrahMos ? Describe. Answer 👉__________________• 7. Where is Indian Military Academy situated ? Answer👉 ______________________• 8. Name the countries which developed BrahMos jointly. Answer 👉______________• 9. Which solo dance form was developed in Tamil Nadu ? Write the names of any three famous artists of this dance? Answer 👉____________ 10. Name the place where arms, tanks and ammunition for the defence forces are manufactured? Answer 👉 11. Name the lyrical dance form of east India. Also write the names of any two famous d

1. Fill in the blanks : (a) Microorganisms can be seen with the help of a_____________________________. (b) Blue-green algae fix_____________________directly from air to enhance fertility of soil. (c) Alcohol is produced with the help of _______________________ .  (d) Cholera is caused by____________________ Ans. (a) microscope           (b) nitrogen           (c) yeast            (d) bacteria 2. Tick the correct answer : (a) Yeast is used in the production of (i) sugar (ii) alcohol. ✔️ (iii) Hydrochloric acid (iv) oxygen (b) The following is an antibiotic. (i) Sodium bicarbonate (ii) Streptomycin✔️ (iii) Alcohol (iv) Yeast  (c) Carrier of malaria-causing protozoan is  (i) female Anopheles mosquito ✔️ (ii) cockroach (iii) Housefly (iv) butterfly (d) The most common carrier of communicable diseases is  (i) ant (ii) Housefly✔️ (iii) Dragonfly (iv)Spider (e) The bread or idli dough rises because of because of (i) Heat (ii) grinding (iii) Growth of yeast cells✔️ (iv) kneading (f) The proce

 NCERT CLASS 8  CHAPTER :- 5 COAL AND PETROLEUM KEYWORDS SOLUTIONS KEYWORDS 📔 COAL :- A black or dark-brown combustible substance formed by carbonation of vegetable matter, used as a fuel. 📔 COAL GAS :- Coal gas is obtained during the processing of coal to get Coke . It is mainly used as a fuel in industries around coal processing plant. 📔 COAL TAR :- Coal Tar is a black, thick Viscous liquid and a mixture of almost hundreds of chemical compounds. 📔 COKE :- A synthetic fuel, obtained from destructive distillation of coal. 📔 FOSSIL FUELS :- Fuel formed from the dead remains of living organisms millions of year ago. 📔 NATURAL GAS :- Natural gas is one of the most useful, Clean and safe energy sources . When natural gas burns, it gives off a large amount of energy, and unlike other Fossil fuels, leaves no ash. 📔 PETROLEUM :- Petroleum oily , thick , flammable liquid , a mixture of various hydrocarbon formed from dead remains of living organisms. 📔 PETROLEUM REFINERY :- A pl

Ncert keywords Chapter = 4  MATERIAL : METAL AND NON-METELS KEYWORDS ⤵️ ▶️ATOM :-  The smallest unit of an element is called an Atom. ▶️CONDUCTER :- The meterial which allow heat and electricity to pass through them are called Conductor. ▶️ DISPLACEMENT REACTION :- A more reactive metal can replaces a less reactive metal,but a less reactive metal cannot save a more reactive metal is called Displacement Reaction. ▶️ DUCTILITY:- The property of metel by which it can be drawn into wires is called Ductility. ▶️ ELEMENT :- A pure substance made up of same atom is called Element.                     For example :- Gold iron...etc ▶️ MALLEABILITY :- The property of metals by which they can be beaten into thin sheets is called Malleability. ▶️ METALS :- The meterial which possess the characteristics of being hard,shiny, malleable, ductile, fusible.....etc are termed as metals.                           For example :- iron, silver, copper.....etc. ▶️Matalloids :- Element showing               p

Hello guys Today we see notes of lesson 1 class 8 Ncert geography book                          CHAPTER= 1                             RESOURCES ⭐ Resources =Anything that can be used to satisfy a need is called a Resource. ⭐ Utility =Water, electricity, rickshaw, vegetable and textbook have something in common. They have all been used by  you, so they have utility.                    Utility or usability is what makes an object or substance a resource. ⭐ Value = Value means worth. Some resources have economic value, some do not. For example, metals may have an economic value, a beautiful landscape may not. But both are important and satisfy human needs. ⭐ Patent  It means the exclusive right over any idea or invention. ⭐ Technology It is the application of latest knowledge and skill in doing or making things. ✳️ Time and technology  Time and technology are two important factors that can change substances into resources. Both are related to the need

Hello guys Today we discuss on chapter 3  Keywords of science  Ncert .. So let's start     SYNTHETIC FIBRES AND PLASTICS Keywords 1.Acriylic :-  Acrylic is a synthetic fibre. It is made from a chemical called acrylonitrile by the process of  polymerization . 2.Artificial silk :- The fibres which are obtained by chemical treatment of wood pulp is called artificial silk or Rayon . 3.Nylon :-  Nylon is a man made fibre prepared from coal, water and air. 4. Plastic :-  Plastic  is a man-made fibre which is meleable and so can be molded into solid shapes. 5. Polyester :- Polyester is a fibre derived from coal,air,water and petroleum and contain Easter . 6. Polymer: -Small units combine to form a large single unit called the Polymer . 7.Polythene :-  Polythene is a carry-bag made of plastics. 8.Rayon :-  Rayon is an artificial silk made of wood pulp . 9.Synthetic fibres :- The fibre which are made by human beings is called  synthetic fibres 10.Terylene :- It is a type of  pol