GENERAL KNOWLEDGE SECTION : SEARCH AT ONE PLACE.......FIND AT ONE PLACE

 GENERAL KNOWLEDGE - USEFUL for  ALL COMPETITIVE EXAMS...........PHYSICS1. From the daily life situation, What is more convenient rolling of stone on a sloping road than to lift it vertical upwards ? Ans: the work done in rolling a stone is less than in lifting it. 2. Which is the phenomenon observed in absorption of ink  by blotting paper?Ans: Capillary action3. Give the unit of Nuclear size and it is the name of a scientist.Ans:...

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REFLECTION AT CURVED SURFACES - CONCAVE AND CONVEX MIRRORS - A COMPLETE STUDY

SPHERICAL MIRRORS ----  CURVED SURFACES  - KEY CONCEPTS Let us look at the below diagram, reflection at plane surfaces i.e. at plane mirror. All the laws of reflection at plane surfaces are valid and applicable to spherical mirrors also. SPHERICAL MIRROR ? The mirrors which have curved surface are known as Spherical mirrors, these mirrors are part of a hollow glass sphere. CONVEX MIRROR AND ITS TERMS The spherical...

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COMPLETE STUDY MATERIAL ON CHEMICAL EQUATIONS - FOUNDATION TO ADVANCED

CHEMICAL REACTIONS - CHEMICAL EQUATIONS INTRODUCTION: In our daily life we all know about physical changes and chemical changes, all these changes are observed in our day today life.  We observe ice converts into water vapor and vice versa.  In this example, the changes in the states of matter are observed and heat may be gained or released.  Similarly, burning of wood also example. CHEMICAL REACTION:  Chemical reactions represent the processes in which a single substance or substances undergo change to produce new substance...

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LABORATORY APPARATUS - USES

LABORATORY APPARATUS - HOW TO USE AND WHAT ARE THEIR ADVANTAGES ? 1, I am ‘Test tube’…..! A test tube is a clear glass or plastic container that is much longer than its wide, commonly has a U-shaped bottom and has an open top.  Glass and special plastic test tubes are also non-reactive.  Many metals react with all sorts of chemicals in ways that would ruin an experiment or sample.  Chemists use test tubes to mix, heat...

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CONCENTRATE ON THESE.......FROM THE EXPERIMENTS......

A QUICK REVISION USING THESE QUESTIONS.....BASED ON EXPERIMENTS ..... TYPE THE ANSWER IN THE BOX  1. WHEN CURRENT IS PASSING THROUGH THE MAGNETIC NEEDLE IS 2. MAGNETIC NEEDLE IS DEFLECTED ONLY DUE TO 3. WHEN CURRENT PASSES THROUGH A COPPER WIRE OR A CONDUCTOR IT PRODUCES 4. THE DISTANCE BETWEEN CONVERGED OR DIVERGED POINT TO SURFACE IS CALLED 5. THE LINE JOINING THE CONVERGED OR DIVERGED POINT TO PINS IS CALLED 6. WHEN ALL PINS POSITIONS ARE EXTENDED BACK OR FRONT THEY WILL MEET AT A POINT THAT POINT IS CALLED...

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