why only iron attracts to magnet

which part of the magnet do none or only a few iron filings (or pins) stick?

True or false? A piece of soft iron is permanently magnetised when placed near a magnet.

A magnetic material will become magnetized if:it is placed next to a compassits magnetic domains all face different directionsmost of its magnetic domains face the same directionit is placed next to a piece of iron

magnetstriction effect

Q1. When a bar magnet is bought near iron dust, most of the dust sticks to *1 pointnear the middle of the magnetequally everywherenear two endsonly at one endQ2. The following diagram shows, a paper clip hanging in the air, identify the possible reason for the same.*1 pointMagicThere is magnet in the cup.There is iron dust in the cup.The clip is made of plastic.Q3. A magnet was brought from different directions towards a toy boat that has been floating in water in a tub. Boat moves towards the magnet if North Pole of the magnet is brought near its head.*1 pointBoat is fitted with a magnet with north pole towards its head.Boat is fitted with a magnet with south pole towards its head.Boat has a small magnet fixed along its length.Boat is made up of non magnetic material.Q4. The north end of a freely suspended magnet always points to the *1 pointGeographical north poleGeographical south poleMagnetic north poleMagnetic west poleQ5.  Assertion: The region around the magnet where its magnetic force can be felt is known as its magnetic field.Reason: The magnetic field is strongest at the center. *1 pointA and R are true and R is the correct explanation of AA and R are true and R is not the correct explanation of AA is true and R is falseA is false and R is trueQ6.  Assertion:  Shadow is formed when an opaque object comes in the path of light.Reason: An opaque body does not allow any light to pass through it.*1 pointA and R are true and R is the correct explanation of AA and R are true and R is not the correct explanation of AA is true and R is falseA is false and R is trueQ7. Read the following two statements carefully and choose the correct options.Statement-1: Light travels in a straight line.Statement-2: Reflection of light is the bending of light when it strikes a surface.*1 pointStatement (1) is correct while statement (2) is incorrect.Statement (2) is correct while statement (1) is incorrect.Both statements are correctBoth statements are incorrect.Q8.  The image formed by pinhole camera on the screen in the figure is *1 pointerect and enlargedinverted and enlargederect and diminishedinverted and diminishedQ9. What happens to a light beam when it passes through a translucent material such as waxed paper?*1 pointMost of the light passes throughLight is reflected in its incident pathMost of the light is absorbed and very little is reflectedLight is not allowed to pass throughQ10. A girl holding a ball in her right hand is standing in front of a mirror. The ball will seems to be in her*1 pointright handleft handdepend on distance between girl and mirrordepend on size of mirrorQ11.  A plant has weak stem and cannot stand upright. It spreads on the ground. It may be called*1 pointherbcreepershrubclimberQ12.  The lines on the broad green part of the leaf are called*1 pointLaminaVeinsVenationnone of theseQ13. The plants having leaves with parallel venation have ____.*1 pointtap rootsfibrous rootslateral rootsnone of theseQ14.   When the inner part of an ovary of a flower were observed with the help of a lens, some small beadlike structures are observed. These are called*1 pointantherstamenovulepollen grainsQ15.   Assertion:  The parts of a typical flower are sepals and petals only.Reason: The parts of stamen are filament and anther.*1 pointA and R are true and R is the correct explanation of AA and R are true and R is not the correct explanation of AA is true and R is falseA is false and R is trueQ16.  Which of the following sources of protein is different from others?*1 pointPeasGramSoyabeansCottage cheese (paneer)Q17.   The most significant and essential mineral required for our body is:*1 pointIronSodiumCalciumAll of the aboveQ18.  A young child needs to take more ____as they help in growth and  body building.*1 pointdiseaseproteinsmineralsnone of theseQ19. Which of the following statements is/are correct with regard to our diet?*1 pointEat a diet rich in carbohydrates and proteins.Drink plenty of waterEat green vegetables every day.All of theseQ 20.  Priya placed two drops of a liquid on cooked rice which turned the rice blue- black. What could be the liquid?*1 pointVegetable oilIodine solutionBenedict's solutionNitrate solution